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/*
* Copyright (c) 2004-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Gabe Black
*/
#ifndef __KERN_OPERATINGSYSTEM_HH__
#define __KERN_OPERATINGSYSTEM_HH__
#include "base/types.hh"
#include "config/full_system.hh"
#if FULL_SYSTEM
class OperatingSystem {};
#else //!FULL_SYSTEM
#include <string>
class LiveProcess;
class ThreadContext;
/// This struct is used to build an target-OS-dependent table that
/// maps the target's open() flags to the host open() flags.
struct OpenFlagTransTable {
int tgtFlag; //!< Target system flag value.
int hostFlag; //!< Corresponding host system flag value.
};
///
/// This class encapsulates the types, structures, constants,
/// functions, and syscall-number mappings specific to an operating system
/// syscall interface.
///
class OperatingSystem {
public:
/// Stat buffer. Note that we can't call it 'stat' since that
/// gets #defined to something else on some systems. This type
/// can be specialized by architecture specific "Linux" classes
typedef void tgt_stat;
// same for stat64
typedef void tgt_stat64;
/// Length of strings in struct utsname (plus 1 for null char).
static const int _SYS_NMLN = 65;
/// Interface struct for uname().
typedef struct {
char sysname[_SYS_NMLN]; //!< System name.
char nodename[_SYS_NMLN]; //!< Node name.
char release[_SYS_NMLN]; //!< OS release.
char version[_SYS_NMLN]; //!< OS version.
char machine[_SYS_NMLN]; //!< Machine type.
} utsname;
/// Limit struct for getrlimit/setrlimit.
typedef struct {
uint64_t rlim_cur; //!< soft limit
uint64_t rlim_max; //!< hard limit
} rlimit;
/// For gettimeofday().
typedef struct {
int64_t tv_sec; //!< seconds
int64_t tv_usec; //!< microseconds
} timeval;
// For writev/readv
typedef struct {
uint64_t iov_base; // void *
uint64_t iov_len;
} tgt_iovec;
/// For getrusage().
typedef struct {
timeval ru_utime; //!< user time used
timeval ru_stime; //!< system time used
int64_t ru_maxrss; //!< max rss
int64_t ru_ixrss; //!< integral shared memory size
int64_t ru_idrss; //!< integral unshared data "
int64_t ru_isrss; //!< integral unshared stack "
int64_t ru_minflt; //!< page reclaims - total vmfaults
int64_t ru_majflt; //!< page faults
int64_t ru_nswap; //!< swaps
int64_t ru_inblock; //!< block input operations
int64_t ru_oublock; //!< block output operations
int64_t ru_msgsnd; //!< messages sent
int64_t ru_msgrcv; //!< messages received
int64_t ru_nsignals; //!< signals received
int64_t ru_nvcsw; //!< voluntary context switches
int64_t ru_nivcsw; //!< involuntary "
} rusage;
static int openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc);
static const bool mmapGrowsUp = true;
static bool mmapGrowsDown() { return false; }
}; // class OperatingSystem
#endif // FULL_SYSTEM
#endif // __OPERATINGSYSTEM_HH__
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