syscall_emul.hh revision 8852
16019Shines@cs.fsu.edu/*
211496Sandreas.sandberg@arm.com * Copyright (c) 2003-2005 The Regents of The University of Michigan
37093Sgblack@eecs.umich.edu * All rights reserved.
47093Sgblack@eecs.umich.edu *
57093Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without
67093Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are
77093Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright
87093Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer;
97093Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright
107093Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the
117093Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution;
127093Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its
137093Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from
146019Shines@cs.fsu.edu * this software without specific prior written permission.
156019Shines@cs.fsu.edu *
166019Shines@cs.fsu.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
176019Shines@cs.fsu.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
186019Shines@cs.fsu.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
196019Shines@cs.fsu.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
206019Shines@cs.fsu.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
216019Shines@cs.fsu.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
226019Shines@cs.fsu.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
236019Shines@cs.fsu.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
246019Shines@cs.fsu.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
256019Shines@cs.fsu.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
266019Shines@cs.fsu.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
276019Shines@cs.fsu.edu *
286019Shines@cs.fsu.edu * Authors: Steve Reinhardt
296019Shines@cs.fsu.edu *          Kevin Lim
306019Shines@cs.fsu.edu */
316019Shines@cs.fsu.edu
326019Shines@cs.fsu.edu#ifndef __SIM_SYSCALL_EMUL_HH__
336019Shines@cs.fsu.edu#define __SIM_SYSCALL_EMUL_HH__
346019Shines@cs.fsu.edu
356019Shines@cs.fsu.edu#define NO_STAT64 (defined(__APPLE__) || defined(__OpenBSD__) || \
366019Shines@cs.fsu.edu                   defined(__FreeBSD__) || defined(__CYGWIN__))
376019Shines@cs.fsu.edu
386019Shines@cs.fsu.edu///
396019Shines@cs.fsu.edu/// @file syscall_emul.hh
406019Shines@cs.fsu.edu///
416735Sgblack@eecs.umich.edu/// This file defines objects used to emulate syscalls from the target
426735Sgblack@eecs.umich.edu/// application on the host machine.
4310037SARM gem5 Developers
4410037SARM gem5 Developers#ifdef __CYGWIN32__
456019Shines@cs.fsu.edu#include <sys/fcntl.h>  // for O_BINARY
466019Shines@cs.fsu.edu#endif
476019Shines@cs.fsu.edu#include <sys/stat.h>
4811793Sbrandon.potter@amd.com#include <sys/time.h>
4911793Sbrandon.potter@amd.com#include <sys/uio.h>
5010037SARM gem5 Developers#include <fcntl.h>
5110037SARM gem5 Developers
5210037SARM gem5 Developers#include <cerrno>
538229Snate@binkert.org#include <string>
548229Snate@binkert.org
556019Shines@cs.fsu.edu#include "base/chunk_generator.hh"
568232Snate@binkert.org#include "base/intmath.hh"      // for RoundUp
578782Sgblack@eecs.umich.edu#include "base/misc.hh"
586019Shines@cs.fsu.edu#include "base/trace.hh"
596019Shines@cs.fsu.edu#include "base/types.hh"
606019Shines@cs.fsu.edu#include "config/the_isa.hh"
616019Shines@cs.fsu.edu#include "cpu/base.hh"
6210037SARM gem5 Developers#include "cpu/thread_context.hh"
6310037SARM gem5 Developers#include "debug/SyscallVerbose.hh"
6410037SARM gem5 Developers#include "mem/page_table.hh"
6510037SARM gem5 Developers#include "mem/se_translating_port_proxy.hh"
6610037SARM gem5 Developers#include "sim/byteswap.hh"
6710037SARM gem5 Developers#include "sim/process.hh"
6810037SARM gem5 Developers#include "sim/syscallreturn.hh"
6910037SARM gem5 Developers#include "sim/system.hh"
7010037SARM gem5 Developers
7110037SARM gem5 Developers///
7210037SARM gem5 Developers/// System call descriptor.
7310037SARM gem5 Developers///
7410037SARM gem5 Developersclass SyscallDesc {
7510037SARM gem5 Developers
7610037SARM gem5 Developers  public:
7710037SARM gem5 Developers
7810037SARM gem5 Developers    /// Typedef for target syscall handler functions.
7910037SARM gem5 Developers    typedef SyscallReturn (*FuncPtr)(SyscallDesc *, int num,
8010037SARM gem5 Developers                           LiveProcess *, ThreadContext *);
8110037SARM gem5 Developers
8210037SARM gem5 Developers    const char *name;   //!< Syscall name (e.g., "open").
8310037SARM gem5 Developers    FuncPtr funcPtr;    //!< Pointer to emulation function.
8410037SARM gem5 Developers    int flags;          //!< Flags (see Flags enum).
8510037SARM gem5 Developers
8610037SARM gem5 Developers    /// Flag values for controlling syscall behavior.
8710037SARM gem5 Developers    enum Flags {
8810037SARM gem5 Developers        /// Don't set return regs according to funcPtr return value.
8910037SARM gem5 Developers        /// Used for syscalls with non-standard return conventions
9010037SARM gem5 Developers        /// that explicitly set the ThreadContext regs (e.g.,
9110037SARM gem5 Developers        /// sigreturn).
9210037SARM gem5 Developers        SuppressReturnValue = 1
9310037SARM gem5 Developers    };
9410037SARM gem5 Developers
9510037SARM gem5 Developers    /// Constructor.
9610037SARM gem5 Developers    SyscallDesc(const char *_name, FuncPtr _funcPtr, int _flags = 0)
9710037SARM gem5 Developers        : name(_name), funcPtr(_funcPtr), flags(_flags)
9810037SARM gem5 Developers    {
9910037SARM gem5 Developers    }
10010037SARM gem5 Developers
10110037SARM gem5 Developers    /// Emulate the syscall.  Public interface for calling through funcPtr.
1026019Shines@cs.fsu.edu    void doSyscall(int callnum, LiveProcess *proc, ThreadContext *tc);
10310037SARM gem5 Developers};
10410037SARM gem5 Developers
10510037SARM gem5 Developers
1066019Shines@cs.fsu.educlass BaseBufferArg {
10710037SARM gem5 Developers
10810037SARM gem5 Developers  public:
10910037SARM gem5 Developers
11010037SARM gem5 Developers    BaseBufferArg(Addr _addr, int _size) : addr(_addr), size(_size)
11110037SARM gem5 Developers    {
11210037SARM gem5 Developers        bufPtr = new uint8_t[size];
11310037SARM gem5 Developers        // clear out buffer: in case we only partially populate this,
11410037SARM gem5 Developers        // and then do a copyOut(), we want to make sure we don't
11510037SARM gem5 Developers        // introduce any random junk into the simulated address space
11610037SARM gem5 Developers        memset(bufPtr, 0, size);
11710037SARM gem5 Developers    }
11810037SARM gem5 Developers
11910037SARM gem5 Developers    virtual ~BaseBufferArg() { delete [] bufPtr; }
12010037SARM gem5 Developers
12110037SARM gem5 Developers    //
12210037SARM gem5 Developers    // copy data into simulator space (read from target memory)
12310037SARM gem5 Developers    //
12410037SARM gem5 Developers    virtual bool copyIn(SETranslatingPortProxy &memproxy)
12510037SARM gem5 Developers    {
12610037SARM gem5 Developers        memproxy.readBlob(addr, bufPtr, size);
12710037SARM gem5 Developers        return true;    // no EFAULT detection for now
12810037SARM gem5 Developers    }
12910037SARM gem5 Developers
13010037SARM gem5 Developers    //
13110037SARM gem5 Developers    // copy data out of simulator space (write to target memory)
13210037SARM gem5 Developers    //
13310037SARM gem5 Developers    virtual bool copyOut(SETranslatingPortProxy &memproxy)
13410037SARM gem5 Developers    {
13510037SARM gem5 Developers        memproxy.writeBlob(addr, bufPtr, size);
13610037SARM gem5 Developers        return true;    // no EFAULT detection for now
13710037SARM gem5 Developers    }
13810037SARM gem5 Developers
13910037SARM gem5 Developers  protected:
14010037SARM gem5 Developers    Addr addr;
14110037SARM gem5 Developers    int size;
14210037SARM gem5 Developers    uint8_t *bufPtr;
14310037SARM gem5 Developers};
14410037SARM gem5 Developers
14510037SARM gem5 Developers
14610037SARM gem5 Developersclass BufferArg : public BaseBufferArg
1476019Shines@cs.fsu.edu{
14810037SARM gem5 Developers  public:
14910037SARM gem5 Developers    BufferArg(Addr _addr, int _size) : BaseBufferArg(_addr, _size) { }
15010037SARM gem5 Developers    void *bufferPtr()   { return bufPtr; }
1516019Shines@cs.fsu.edu};
15210037SARM gem5 Developers
15310037SARM gem5 Developerstemplate <class T>
15410037SARM gem5 Developersclass TypedBufferArg : public BaseBufferArg
15510037SARM gem5 Developers{
15610037SARM gem5 Developers  public:
15710037SARM gem5 Developers    // user can optionally specify a specific number of bytes to
15810037SARM gem5 Developers    // allocate to deal with those structs that have variable-size
15910037SARM gem5 Developers    // arrays at the end
16010037SARM gem5 Developers    TypedBufferArg(Addr _addr, int _size = sizeof(T))
16110037SARM gem5 Developers        : BaseBufferArg(_addr, _size)
16210037SARM gem5 Developers    { }
16310037SARM gem5 Developers
16410037SARM gem5 Developers    // type case
16510037SARM gem5 Developers    operator T*() { return (T *)bufPtr; }
16610037SARM gem5 Developers
16710037SARM gem5 Developers    // dereference operators
16810037SARM gem5 Developers    T &operator*()       { return *((T *)bufPtr); }
16910037SARM gem5 Developers    T* operator->()      { return (T *)bufPtr; }
17010037SARM gem5 Developers    T &operator[](int i) { return ((T *)bufPtr)[i]; }
17110037SARM gem5 Developers};
17210037SARM gem5 Developers
17310037SARM gem5 Developers//////////////////////////////////////////////////////////////////////
17410037SARM gem5 Developers//
17510037SARM gem5 Developers// The following emulation functions are generic enough that they
17610037SARM gem5 Developers// don't need to be recompiled for different emulated OS's.  They are
17710037SARM gem5 Developers// defined in sim/syscall_emul.cc.
17810037SARM gem5 Developers//
17910037SARM gem5 Developers//////////////////////////////////////////////////////////////////////
18010037SARM gem5 Developers
18110037SARM gem5 Developers
18210037SARM gem5 Developers/// Handler for unimplemented syscalls that we haven't thought about.
18310037SARM gem5 DevelopersSyscallReturn unimplementedFunc(SyscallDesc *desc, int num,
18410037SARM gem5 Developers                                LiveProcess *p, ThreadContext *tc);
18510037SARM gem5 Developers
18610037SARM gem5 Developers/// Handler for unimplemented syscalls that we never intend to
18710037SARM gem5 Developers/// implement (signal handling, etc.) and should not affect the correct
18810037SARM gem5 Developers/// behavior of the program.  Print a warning only if the appropriate
18910037SARM gem5 Developers/// trace flag is enabled.  Return success to the target program.
19010037SARM gem5 DevelopersSyscallReturn ignoreFunc(SyscallDesc *desc, int num,
19110037SARM gem5 Developers                         LiveProcess *p, ThreadContext *tc);
19210037SARM gem5 DevelopersSyscallReturn ignoreWarnOnceFunc(SyscallDesc *desc, int num,
1936019Shines@cs.fsu.edu                         LiveProcess *p, ThreadContext *tc);
19410037SARM gem5 Developers
19510037SARM gem5 Developers/// Target exit() handler: terminate current context.
19610037SARM gem5 DevelopersSyscallReturn exitFunc(SyscallDesc *desc, int num,
1976019Shines@cs.fsu.edu                       LiveProcess *p, ThreadContext *tc);
19810037SARM gem5 Developers
19910037SARM gem5 Developers/// Target exit_group() handler: terminate simulation. (exit all threads)
20010037SARM gem5 DevelopersSyscallReturn exitGroupFunc(SyscallDesc *desc, int num,
20110037SARM gem5 Developers                       LiveProcess *p, ThreadContext *tc);
20210037SARM gem5 Developers
20310037SARM gem5 Developers/// Target getpagesize() handler.
20410037SARM gem5 DevelopersSyscallReturn getpagesizeFunc(SyscallDesc *desc, int num,
20510037SARM gem5 Developers                              LiveProcess *p, ThreadContext *tc);
20610037SARM gem5 Developers
20710037SARM gem5 Developers/// Target brk() handler: set brk address.
20810037SARM gem5 DevelopersSyscallReturn brkFunc(SyscallDesc *desc, int num,
20910037SARM gem5 Developers                      LiveProcess *p, ThreadContext *tc);
21010037SARM gem5 Developers
21110037SARM gem5 Developers/// Target close() handler.
21210037SARM gem5 DevelopersSyscallReturn closeFunc(SyscallDesc *desc, int num,
21310037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
21410037SARM gem5 Developers
21510037SARM gem5 Developers/// Target read() handler.
21610037SARM gem5 DevelopersSyscallReturn readFunc(SyscallDesc *desc, int num,
21710037SARM gem5 Developers                       LiveProcess *p, ThreadContext *tc);
21810037SARM gem5 Developers
21910037SARM gem5 Developers/// Target write() handler.
22010037SARM gem5 DevelopersSyscallReturn writeFunc(SyscallDesc *desc, int num,
22110037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
22210037SARM gem5 Developers
22310037SARM gem5 Developers/// Target lseek() handler.
22410037SARM gem5 DevelopersSyscallReturn lseekFunc(SyscallDesc *desc, int num,
22510037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
22610037SARM gem5 Developers
22710037SARM gem5 Developers/// Target _llseek() handler.
22810037SARM gem5 DevelopersSyscallReturn _llseekFunc(SyscallDesc *desc, int num,
22910037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
23010037SARM gem5 Developers
23110037SARM gem5 Developers/// Target munmap() handler.
23210037SARM gem5 DevelopersSyscallReturn munmapFunc(SyscallDesc *desc, int num,
23310037SARM gem5 Developers                         LiveProcess *p, ThreadContext *tc);
23410037SARM gem5 Developers
23510037SARM gem5 Developers/// Target gethostname() handler.
23610037SARM gem5 DevelopersSyscallReturn gethostnameFunc(SyscallDesc *desc, int num,
23710037SARM gem5 Developers                              LiveProcess *p, ThreadContext *tc);
23810037SARM gem5 Developers
23910037SARM gem5 Developers/// Target getcwd() handler.
24010037SARM gem5 DevelopersSyscallReturn getcwdFunc(SyscallDesc *desc, int num,
24110037SARM gem5 Developers                         LiveProcess *p, ThreadContext *tc);
24210037SARM gem5 Developers
24310037SARM gem5 Developers/// Target unlink() handler.
24410037SARM gem5 DevelopersSyscallReturn readlinkFunc(SyscallDesc *desc, int num,
24510037SARM gem5 Developers                           LiveProcess *p, ThreadContext *tc);
24610037SARM gem5 Developers
24710037SARM gem5 Developers/// Target unlink() handler.
24810037SARM gem5 DevelopersSyscallReturn unlinkFunc(SyscallDesc *desc, int num,
24910037SARM gem5 Developers                         LiveProcess *p, ThreadContext *tc);
25010037SARM gem5 Developers
25110037SARM gem5 Developers/// Target mkdir() handler.
25210037SARM gem5 DevelopersSyscallReturn mkdirFunc(SyscallDesc *desc, int num,
25310037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
25410037SARM gem5 Developers
25510037SARM gem5 Developers/// Target rename() handler.
25610037SARM gem5 DevelopersSyscallReturn renameFunc(SyscallDesc *desc, int num,
25710037SARM gem5 Developers                         LiveProcess *p, ThreadContext *tc);
25810037SARM gem5 Developers
25910037SARM gem5 Developers
26010037SARM gem5 Developers/// Target truncate() handler.
26110037SARM gem5 DevelopersSyscallReturn truncateFunc(SyscallDesc *desc, int num,
26210037SARM gem5 Developers                           LiveProcess *p, ThreadContext *tc);
26310037SARM gem5 Developers
26410037SARM gem5 Developers
26510037SARM gem5 Developers/// Target ftruncate() handler.
26610037SARM gem5 DevelopersSyscallReturn ftruncateFunc(SyscallDesc *desc, int num,
26710037SARM gem5 Developers                            LiveProcess *p, ThreadContext *tc);
26810037SARM gem5 Developers
26910037SARM gem5 Developers
27010037SARM gem5 Developers/// Target truncate64() handler.
27110037SARM gem5 DevelopersSyscallReturn truncate64Func(SyscallDesc *desc, int num,
27210037SARM gem5 Developers                             LiveProcess *p, ThreadContext *tc);
27310037SARM gem5 Developers
27410037SARM gem5 Developers/// Target ftruncate64() handler.
27510037SARM gem5 DevelopersSyscallReturn ftruncate64Func(SyscallDesc *desc, int num,
27610037SARM gem5 Developers                              LiveProcess *p, ThreadContext *tc);
27710037SARM gem5 Developers
27810037SARM gem5 Developers
27910037SARM gem5 Developers/// Target umask() handler.
28010037SARM gem5 DevelopersSyscallReturn umaskFunc(SyscallDesc *desc, int num,
28110037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
28210037SARM gem5 Developers
28310037SARM gem5 Developers
28410037SARM gem5 Developers/// Target chown() handler.
28510037SARM gem5 DevelopersSyscallReturn chownFunc(SyscallDesc *desc, int num,
28610037SARM gem5 Developers                        LiveProcess *p, ThreadContext *tc);
28710037SARM gem5 Developers
28810037SARM gem5 Developers
28910037SARM gem5 Developers/// Target fchown() handler.
29010037SARM gem5 DevelopersSyscallReturn fchownFunc(SyscallDesc *desc, int num,
29110037SARM gem5 Developers                         LiveProcess *p, ThreadContext *tc);
29210037SARM gem5 Developers
29310037SARM gem5 Developers/// Target dup() handler.
29410037SARM gem5 DevelopersSyscallReturn dupFunc(SyscallDesc *desc, int num,
29510037SARM gem5 Developers                      LiveProcess *process, ThreadContext *tc);
2966019Shines@cs.fsu.edu
29710037SARM gem5 Developers/// Target fnctl() handler.
2987362Sgblack@eecs.umich.eduSyscallReturn fcntlFunc(SyscallDesc *desc, int num,
2996735Sgblack@eecs.umich.edu                        LiveProcess *process, ThreadContext *tc);
30010037SARM gem5 Developers
3016019Shines@cs.fsu.edu/// Target fcntl64() handler.
30210037SARM gem5 DevelopersSyscallReturn fcntl64Func(SyscallDesc *desc, int num,
30310037SARM gem5 Developers                        LiveProcess *process, ThreadContext *tc);
3047400SAli.Saidi@ARM.com
3056735Sgblack@eecs.umich.edu/// Target setuid() handler.
3066735Sgblack@eecs.umich.eduSyscallReturn setuidFunc(SyscallDesc *desc, int num,
30710037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
3086735Sgblack@eecs.umich.edu
30910037SARM gem5 Developers/// Target getpid() handler.
31010037SARM gem5 DevelopersSyscallReturn getpidFunc(SyscallDesc *desc, int num,
31110037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
31210037SARM gem5 Developers
3137400SAli.Saidi@ARM.com/// Target getuid() handler.
31410037SARM gem5 DevelopersSyscallReturn getuidFunc(SyscallDesc *desc, int num,
31510037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
31610037SARM gem5 Developers
31710037SARM gem5 Developers/// Target getgid() handler.
31810037SARM gem5 DevelopersSyscallReturn getgidFunc(SyscallDesc *desc, int num,
31910037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
32010037SARM gem5 Developers
32110037SARM gem5 Developers/// Target getppid() handler.
32210037SARM gem5 DevelopersSyscallReturn getppidFunc(SyscallDesc *desc, int num,
32310037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
32410037SARM gem5 Developers
32510037SARM gem5 Developers/// Target geteuid() handler.
32610037SARM gem5 DevelopersSyscallReturn geteuidFunc(SyscallDesc *desc, int num,
32710037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
32810037SARM gem5 Developers
32910037SARM gem5 Developers/// Target getegid() handler.
33010037SARM gem5 DevelopersSyscallReturn getegidFunc(SyscallDesc *desc, int num,
3316019Shines@cs.fsu.edu                               LiveProcess *p, ThreadContext *tc);
3326019Shines@cs.fsu.edu
33310037SARM gem5 Developers/// Target clone() handler.
33410037SARM gem5 DevelopersSyscallReturn cloneFunc(SyscallDesc *desc, int num,
33510037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
33610037SARM gem5 Developers
33710037SARM gem5 Developers
33810037SARM gem5 Developers/// Pseudo Funcs  - These functions use a different return convension,
33910037SARM gem5 Developers/// returning a second value in a register other than the normal return register
34010037SARM gem5 DevelopersSyscallReturn pipePseudoFunc(SyscallDesc *desc, int num,
34110037SARM gem5 Developers                             LiveProcess *process, ThreadContext *tc);
34211574SCurtis.Dunham@arm.com
34311574SCurtis.Dunham@arm.com/// Target getpidPseudo() handler.
34411574SCurtis.Dunham@arm.comSyscallReturn getpidPseudoFunc(SyscallDesc *desc, int num,
34511574SCurtis.Dunham@arm.com                               LiveProcess *p, ThreadContext *tc);
34610037SARM gem5 Developers
34710037SARM gem5 Developers/// Target getuidPseudo() handler.
34810037SARM gem5 DevelopersSyscallReturn getuidPseudoFunc(SyscallDesc *desc, int num,
34910037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
35010037SARM gem5 Developers
35110037SARM gem5 Developers/// Target getgidPseudo() handler.
35210037SARM gem5 DevelopersSyscallReturn getgidPseudoFunc(SyscallDesc *desc, int num,
35310037SARM gem5 Developers                               LiveProcess *p, ThreadContext *tc);
35410037SARM gem5 Developers
35510037SARM gem5 Developers
35610037SARM gem5 Developers/// A readable name for 1,000,000, for converting microseconds to seconds.
35710037SARM gem5 Developersconst int one_million = 1000000;
35810037SARM gem5 Developers
35910037SARM gem5 Developers/// Approximate seconds since the epoch (1/1/1970).  About a billion,
36010037SARM gem5 Developers/// by my reckoning.  We want to keep this a constant (not use the
36110037SARM gem5 Developers/// real-world time) to keep simulations repeatable.
36210037SARM gem5 Developersconst unsigned seconds_since_epoch = 1000000000;
36310037SARM gem5 Developers
36410037SARM gem5 Developers/// Helper function to convert current elapsed time to seconds and
36510037SARM gem5 Developers/// microseconds.
36610037SARM gem5 Developerstemplate <class T1, class T2>
36710037SARM gem5 Developersvoid
36810037SARM gem5 DevelopersgetElapsedTime(T1 &sec, T2 &usec)
36910037SARM gem5 Developers{
37010037SARM gem5 Developers    int elapsed_usecs = curTick() / SimClock::Int::us;
37110037SARM gem5 Developers    sec = elapsed_usecs / one_million;
37210037SARM gem5 Developers    usec = elapsed_usecs % one_million;
37310037SARM gem5 Developers}
37410037SARM gem5 Developers
37510037SARM gem5 Developers//////////////////////////////////////////////////////////////////////
37610037SARM gem5 Developers//
37710037SARM gem5 Developers// The following emulation functions are generic, but need to be
37810037SARM gem5 Developers// templated to account for differences in types, constants, etc.
37910037SARM gem5 Developers//
38010037SARM gem5 Developers//////////////////////////////////////////////////////////////////////
38110037SARM gem5 Developers
38210037SARM gem5 Developers#if NO_STAT64
38310037SARM gem5 Developers    typedef struct stat hst_stat;
38410037SARM gem5 Developers    typedef struct stat hst_stat64;
38510037SARM gem5 Developers#else
38610037SARM gem5 Developers    typedef struct stat hst_stat;
38710037SARM gem5 Developers    typedef struct stat64 hst_stat64;
38810037SARM gem5 Developers#endif
38910037SARM gem5 Developers
39010037SARM gem5 Developers//// Helper function to convert a host stat buffer to a target stat
39110037SARM gem5 Developers//// buffer.  Also copies the target buffer out to the simulated
39210037SARM gem5 Developers//// memory space.  Used by stat(), fstat(), and lstat().
39310037SARM gem5 Developers
39410037SARM gem5 Developerstemplate <typename target_stat, typename host_stat>
39510037SARM gem5 Developersstatic void
39610037SARM gem5 DevelopersconvertStatBuf(target_stat &tgt, host_stat *host, bool fakeTTY = false)
39710037SARM gem5 Developers{
39810037SARM gem5 Developers    using namespace TheISA;
39910037SARM gem5 Developers
40010037SARM gem5 Developers    if (fakeTTY)
40110037SARM gem5 Developers        tgt->st_dev = 0xA;
40210037SARM gem5 Developers    else
40310037SARM gem5 Developers        tgt->st_dev = host->st_dev;
40410037SARM gem5 Developers    tgt->st_dev = TheISA::htog(tgt->st_dev);
40510037SARM gem5 Developers    tgt->st_ino = host->st_ino;
40610037SARM gem5 Developers    tgt->st_ino = TheISA::htog(tgt->st_ino);
40710037SARM gem5 Developers    tgt->st_mode = host->st_mode;
40810037SARM gem5 Developers    if (fakeTTY) {
40910037SARM gem5 Developers        // Claim to be a character device
41010037SARM gem5 Developers        tgt->st_mode &= ~S_IFMT;    // Clear S_IFMT
41110037SARM gem5 Developers        tgt->st_mode |= S_IFCHR;    // Set S_IFCHR
41210037SARM gem5 Developers    }
41310037SARM gem5 Developers    tgt->st_mode = TheISA::htog(tgt->st_mode);
41410037SARM gem5 Developers    tgt->st_nlink = host->st_nlink;
41510037SARM gem5 Developers    tgt->st_nlink = TheISA::htog(tgt->st_nlink);
41610037SARM gem5 Developers    tgt->st_uid = host->st_uid;
41710037SARM gem5 Developers    tgt->st_uid = TheISA::htog(tgt->st_uid);
41810037SARM gem5 Developers    tgt->st_gid = host->st_gid;
41910037SARM gem5 Developers    tgt->st_gid = TheISA::htog(tgt->st_gid);
42010037SARM gem5 Developers    if (fakeTTY)
42110037SARM gem5 Developers        tgt->st_rdev = 0x880d;
42210037SARM gem5 Developers    else
42310037SARM gem5 Developers        tgt->st_rdev = host->st_rdev;
42410037SARM gem5 Developers    tgt->st_rdev = TheISA::htog(tgt->st_rdev);
42510037SARM gem5 Developers    tgt->st_size = host->st_size;
42610037SARM gem5 Developers    tgt->st_size = TheISA::htog(tgt->st_size);
42710037SARM gem5 Developers    tgt->st_atimeX = host->st_atime;
42810037SARM gem5 Developers    tgt->st_atimeX = TheISA::htog(tgt->st_atimeX);
42910417Sandreas.hansson@arm.com    tgt->st_mtimeX = host->st_mtime;
4306019Shines@cs.fsu.edu    tgt->st_mtimeX = TheISA::htog(tgt->st_mtimeX);
43110037SARM gem5 Developers    tgt->st_ctimeX = host->st_ctime;
43210037SARM gem5 Developers    tgt->st_ctimeX = TheISA::htog(tgt->st_ctimeX);
43310037SARM gem5 Developers    // Force the block size to be 8k. This helps to ensure buffered io works
43410037SARM gem5 Developers    // consistently across different hosts.
43510037SARM gem5 Developers    tgt->st_blksize = 0x2000;
43610037SARM gem5 Developers    tgt->st_blksize = TheISA::htog(tgt->st_blksize);
43710037SARM gem5 Developers    tgt->st_blocks = host->st_blocks;
43810037SARM gem5 Developers    tgt->st_blocks = TheISA::htog(tgt->st_blocks);
43910037SARM gem5 Developers}
44010037SARM gem5 Developers
44110037SARM gem5 Developers// Same for stat64
44210037SARM gem5 Developers
44311578SDylan.Johnson@ARM.comtemplate <typename target_stat, typename host_stat64>
44411578SDylan.Johnson@ARM.comstatic void
44510037SARM gem5 DevelopersconvertStat64Buf(target_stat &tgt, host_stat64 *host, bool fakeTTY = false)
44610037SARM gem5 Developers{
44710037SARM gem5 Developers    using namespace TheISA;
44810037SARM gem5 Developers
44910037SARM gem5 Developers    convertStatBuf<target_stat, host_stat64>(tgt, host, fakeTTY);
45010037SARM gem5 Developers#if defined(STAT_HAVE_NSEC)
45110037SARM gem5 Developers    tgt->st_atime_nsec = host->st_atime_nsec;
45210037SARM gem5 Developers    tgt->st_atime_nsec = TheISA::htog(tgt->st_atime_nsec);
45310037SARM gem5 Developers    tgt->st_mtime_nsec = host->st_mtime_nsec;
45410037SARM gem5 Developers    tgt->st_mtime_nsec = TheISA::htog(tgt->st_mtime_nsec);
45510037SARM gem5 Developers    tgt->st_ctime_nsec = host->st_ctime_nsec;
45610037SARM gem5 Developers    tgt->st_ctime_nsec = TheISA::htog(tgt->st_ctime_nsec);
45710037SARM gem5 Developers#else
45810037SARM gem5 Developers    tgt->st_atime_nsec = 0;
45910037SARM gem5 Developers    tgt->st_mtime_nsec = 0;
46010037SARM gem5 Developers    tgt->st_ctime_nsec = 0;
46110037SARM gem5 Developers#endif
46210037SARM gem5 Developers}
4636735Sgblack@eecs.umich.edu
4648782Sgblack@eecs.umich.edu//Here are a couple convenience functions
4658782Sgblack@eecs.umich.edutemplate<class OS>
4666735Sgblack@eecs.umich.edustatic void
4676019Shines@cs.fsu.educopyOutStatBuf(SETranslatingPortProxy &mem, Addr addr,
4686735Sgblack@eecs.umich.edu        hst_stat *host, bool fakeTTY = false)
46910037SARM gem5 Developers{
4708303SAli.Saidi@ARM.com    typedef TypedBufferArg<typename OS::tgt_stat> tgt_stat_buf;
47110338SCurtis.Dunham@arm.com    tgt_stat_buf tgt(addr);
47210338SCurtis.Dunham@arm.com    convertStatBuf<tgt_stat_buf, hst_stat>(tgt, host, fakeTTY);
47310338SCurtis.Dunham@arm.com    tgt.copyOut(mem);
47410338SCurtis.Dunham@arm.com}
4758303SAli.Saidi@ARM.com
4767720Sgblack@eecs.umich.edutemplate<class OS>
4778205SAli.Saidi@ARM.comstatic void
4788205SAli.Saidi@ARM.comcopyOutStat64Buf(SETranslatingPortProxy &mem, Addr addr,
4798205SAli.Saidi@ARM.com        hst_stat64 *host, bool fakeTTY = false)
4806735Sgblack@eecs.umich.edu{
48110037SARM gem5 Developers    typedef TypedBufferArg<typename OS::tgt_stat64> tgt_stat_buf;
48210037SARM gem5 Developers    tgt_stat_buf tgt(addr);
48310037SARM gem5 Developers    convertStat64Buf<tgt_stat_buf, hst_stat64>(tgt, host, fakeTTY);
48410037SARM gem5 Developers    tgt.copyOut(mem);
48510037SARM gem5 Developers}
48610037SARM gem5 Developers
48710037SARM gem5 Developers/// Target ioctl() handler.  For the most part, programs call ioctl()
48810037SARM gem5 Developers/// only to find out if their stdout is a tty, to determine whether to
48910037SARM gem5 Developers/// do line or block buffering.
49010037SARM gem5 Developerstemplate <class OS>
49110037SARM gem5 DevelopersSyscallReturn
49210037SARM gem5 DevelopersioctlFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
49310037SARM gem5 Developers          ThreadContext *tc)
49410037SARM gem5 Developers{
49510037SARM gem5 Developers    int index = 0;
49610037SARM gem5 Developers    int fd = process->getSyscallArg(tc, index);
49710037SARM gem5 Developers    unsigned req = process->getSyscallArg(tc, index);
49810037SARM gem5 Developers
49910037SARM gem5 Developers    DPRINTF(SyscallVerbose, "ioctl(%d, 0x%x, ...)\n", fd, req);
50010037SARM gem5 Developers
50110037SARM gem5 Developers    if (fd < 0 || process->sim_fd(fd) < 0) {
50210037SARM gem5 Developers        // doesn't map to any simulator fd: not a valid target fd
50310037SARM gem5 Developers        return -EBADF;
50410037SARM gem5 Developers    }
50510037SARM gem5 Developers
50610037SARM gem5 Developers    switch (req) {
50710037SARM gem5 Developers      case OS::TIOCISATTY_:
50810037SARM gem5 Developers      case OS::TIOCGETP_:
50910037SARM gem5 Developers      case OS::TIOCSETP_:
51010037SARM gem5 Developers      case OS::TIOCSETN_:
51110037SARM gem5 Developers      case OS::TIOCSETC_:
51210037SARM gem5 Developers      case OS::TIOCGETC_:
51310037SARM gem5 Developers      case OS::TIOCGETS_:
51410037SARM gem5 Developers      case OS::TIOCGETA_:
51510037SARM gem5 Developers      case OS::TCSETAW_:
51610037SARM gem5 Developers        return -ENOTTY;
51710037SARM gem5 Developers
51810037SARM gem5 Developers      default:
51910037SARM gem5 Developers        fatal("Unsupported ioctl call: ioctl(%d, 0x%x, ...) @ \n",
52010037SARM gem5 Developers              fd, req, tc->pcState());
52110037SARM gem5 Developers    }
52210037SARM gem5 Developers}
52310037SARM gem5 Developers
52410037SARM gem5 Developers/// Target open() handler.
52510037SARM gem5 Developerstemplate <class OS>
52610037SARM gem5 DevelopersSyscallReturn
52710037SARM gem5 DevelopersopenFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
52810037SARM gem5 Developers         ThreadContext *tc)
5296735Sgblack@eecs.umich.edu{
5306735Sgblack@eecs.umich.edu    std::string path;
5316735Sgblack@eecs.umich.edu
53210037SARM gem5 Developers    int index = 0;
5338518Sgeoffrey.blake@arm.com    if (!tc->getMemProxy().tryReadString(path,
5348518Sgeoffrey.blake@arm.com                process->getSyscallArg(tc, index)))
5356735Sgblack@eecs.umich.edu        return -EFAULT;
53610037SARM gem5 Developers
53710037SARM gem5 Developers    if (path == "/dev/sysdev0") {
53810037SARM gem5 Developers        // This is a memory-mapped high-resolution timer device on Alpha.
53910037SARM gem5 Developers        // We don't support it, so just punt.
54010037SARM gem5 Developers        warn("Ignoring open(%s, ...)\n", path);
54110037SARM gem5 Developers        return -ENOENT;
54210037SARM gem5 Developers    }
54310037SARM gem5 Developers
54410037SARM gem5 Developers    int tgtFlags = process->getSyscallArg(tc, index);
54510037SARM gem5 Developers    int mode = process->getSyscallArg(tc, index);
54610037SARM gem5 Developers    int hostFlags = 0;
54710037SARM gem5 Developers
5486735Sgblack@eecs.umich.edu    // translate open flags
5496735Sgblack@eecs.umich.edu    for (int i = 0; i < OS::NUM_OPEN_FLAGS; i++) {
5506735Sgblack@eecs.umich.edu        if (tgtFlags & OS::openFlagTable[i].tgtFlag) {
5516735Sgblack@eecs.umich.edu            tgtFlags &= ~OS::openFlagTable[i].tgtFlag;
5526735Sgblack@eecs.umich.edu            hostFlags |= OS::openFlagTable[i].hostFlag;
5536735Sgblack@eecs.umich.edu        }
5546735Sgblack@eecs.umich.edu    }
5556735Sgblack@eecs.umich.edu
5566735Sgblack@eecs.umich.edu    // any target flags left?
55710037SARM gem5 Developers    if (tgtFlags != 0)
55810037SARM gem5 Developers        warn("Syscall: open: cannot decode flags 0x%x", tgtFlags);
55910037SARM gem5 Developers
5606735Sgblack@eecs.umich.edu#ifdef __CYGWIN32__
5616735Sgblack@eecs.umich.edu    hostFlags |= O_BINARY;
5626735Sgblack@eecs.umich.edu#endif
5636735Sgblack@eecs.umich.edu
56410037SARM gem5 Developers    // Adjust path for current working directory
56510037SARM gem5 Developers    path = process->fullPath(path);
56610037SARM gem5 Developers
56710037SARM gem5 Developers    DPRINTF(SyscallVerbose, "opening file %s\n", path.c_str());
56810037SARM gem5 Developers
56910037SARM gem5 Developers    int fd;
57010037SARM gem5 Developers    if (!path.compare(0, 6, "/proc/") || !path.compare(0, 8, "/system/") ||
57110037SARM gem5 Developers        !path.compare(0, 10, "/platform/") || !path.compare(0, 5, "/sys/")) {
57210037SARM gem5 Developers        // It's a proc/sys entery and requires special handling
57310037SARM gem5 Developers        fd = OS::openSpecialFile(path, process, tc);
5746735Sgblack@eecs.umich.edu        return (fd == -1) ? -1 : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
5756735Sgblack@eecs.umich.edu     } else {
5767093Sgblack@eecs.umich.edu        // open the file
5777093Sgblack@eecs.umich.edu        fd = open(path.c_str(), hostFlags, mode);
5787720Sgblack@eecs.umich.edu        return (fd == -1) ? -errno : process->alloc_fd(fd,path.c_str(),hostFlags,mode, false);
5797585SAli.Saidi@arm.com     }
5807720Sgblack@eecs.umich.edu
5817720Sgblack@eecs.umich.edu}
5827720Sgblack@eecs.umich.edu
5837720Sgblack@eecs.umich.edu/// Target sysinfo() handler.
5847720Sgblack@eecs.umich.edutemplate <class OS>
5857720Sgblack@eecs.umich.eduSyscallReturn
58610037SARM gem5 DeveloperssysinfoFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
58710037SARM gem5 Developers         ThreadContext *tc)
5887720Sgblack@eecs.umich.edu{
5896019Shines@cs.fsu.edu
5907189Sgblack@eecs.umich.edu    int index = 0;
5917400SAli.Saidi@ARM.com    TypedBufferArg<typename OS::tgt_sysinfo>
59210417Sandreas.hansson@arm.com        sysinfo(process->getSyscallArg(tc, index));
59310037SARM gem5 Developers
59410037SARM gem5 Developers    sysinfo->uptime=seconds_since_epoch;
59510037SARM gem5 Developers    sysinfo->totalram=process->system->memSize();
59610037SARM gem5 Developers
59710037SARM gem5 Developers    sysinfo.copyOut(tc->getMemProxy());
59810037SARM gem5 Developers
59910037SARM gem5 Developers    return 0;
60010037SARM gem5 Developers}
60111574SCurtis.Dunham@arm.com
60211574SCurtis.Dunham@arm.com/// Target chmod() handler.
60311574SCurtis.Dunham@arm.comtemplate <class OS>
60411574SCurtis.Dunham@arm.comSyscallReturn
60511574SCurtis.Dunham@arm.comchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
60610037SARM gem5 Developers          ThreadContext *tc)
60710037SARM gem5 Developers{
60810037SARM gem5 Developers    std::string path;
60910037SARM gem5 Developers
61010037SARM gem5 Developers    int index = 0;
61110037SARM gem5 Developers    if (!tc->getMemProxy().tryReadString(path,
61210037SARM gem5 Developers                process->getSyscallArg(tc, index))) {
61310037SARM gem5 Developers        return -EFAULT;
61410037SARM gem5 Developers    }
61510037SARM gem5 Developers
61610037SARM gem5 Developers    uint32_t mode = process->getSyscallArg(tc, index);
61710037SARM gem5 Developers    mode_t hostMode = 0;
61810037SARM gem5 Developers
61910338SCurtis.Dunham@arm.com    // XXX translate mode flags via OS::something???
62010338SCurtis.Dunham@arm.com    hostMode = mode;
62110338SCurtis.Dunham@arm.com
62210037SARM gem5 Developers    // Adjust path for current working directory
62310037SARM gem5 Developers    path = process->fullPath(path);
62410037SARM gem5 Developers
62510037SARM gem5 Developers    // do the chmod
62610037SARM gem5 Developers    int result = chmod(path.c_str(), hostMode);
62710037SARM gem5 Developers    if (result < 0)
62810037SARM gem5 Developers        return -errno;
62910037SARM gem5 Developers
63010037SARM gem5 Developers    return 0;
63110037SARM gem5 Developers}
63210338SCurtis.Dunham@arm.com
63310037SARM gem5 Developers
63410037SARM gem5 Developers/// Target fchmod() handler.
63510037SARM gem5 Developerstemplate <class OS>
63610037SARM gem5 DevelopersSyscallReturn
63710037SARM gem5 DevelopersfchmodFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
63810037SARM gem5 Developers           ThreadContext *tc)
63910037SARM gem5 Developers{
64010037SARM gem5 Developers    int index = 0;
64110037SARM gem5 Developers    int fd = process->getSyscallArg(tc, index);
64210037SARM gem5 Developers    if (fd < 0 || process->sim_fd(fd) < 0) {
64310037SARM gem5 Developers        // doesn't map to any simulator fd: not a valid target fd
64410037SARM gem5 Developers        return -EBADF;
64510037SARM gem5 Developers    }
64610037SARM gem5 Developers
64710037SARM gem5 Developers    uint32_t mode = process->getSyscallArg(tc, index);
64810037SARM gem5 Developers    mode_t hostMode = 0;
64910037SARM gem5 Developers
65010037SARM gem5 Developers    // XXX translate mode flags via OS::someting???
65110037SARM gem5 Developers    hostMode = mode;
65210037SARM gem5 Developers
65310037SARM gem5 Developers    // do the fchmod
65410037SARM gem5 Developers    int result = fchmod(process->sim_fd(fd), hostMode);
65510037SARM gem5 Developers    if (result < 0)
65610037SARM gem5 Developers        return -errno;
65710037SARM gem5 Developers
65810037SARM gem5 Developers    return 0;
65910037SARM gem5 Developers}
66010037SARM gem5 Developers
66110037SARM gem5 Developers/// Target mremap() handler.
66210037SARM gem5 Developerstemplate <class OS>
66310037SARM gem5 DevelopersSyscallReturn
66410037SARM gem5 DevelopersmremapFunc(SyscallDesc *desc, int callnum, LiveProcess *process, ThreadContext *tc)
66510037SARM gem5 Developers{
66610037SARM gem5 Developers    int index = 0;
66710037SARM gem5 Developers    Addr start = process->getSyscallArg(tc, index);
66810037SARM gem5 Developers    uint64_t old_length = process->getSyscallArg(tc, index);
66910037SARM gem5 Developers    uint64_t new_length = process->getSyscallArg(tc, index);
67010037SARM gem5 Developers    uint64_t flags = process->getSyscallArg(tc, index);
67110037SARM gem5 Developers
67210037SARM gem5 Developers    if ((start % TheISA::VMPageSize != 0) ||
67310037SARM gem5 Developers            (new_length % TheISA::VMPageSize != 0)) {
67410037SARM gem5 Developers        warn("mremap failing: arguments not page aligned");
67510037SARM gem5 Developers        return -EINVAL;
67610037SARM gem5 Developers    }
67710037SARM gem5 Developers
67810037SARM gem5 Developers    if (new_length > old_length) {
67910037SARM gem5 Developers        if ((start + old_length) == process->mmap_end) {
68010037SARM gem5 Developers            uint64_t diff = new_length - old_length;
68110037SARM gem5 Developers            process->allocateMem(process->mmap_end, diff);
68210417Sandreas.hansson@arm.com            process->mmap_end += diff;
6837400SAli.Saidi@ARM.com            return start;
6848782Sgblack@eecs.umich.edu        } else {
68511150Smitch.hayenga@arm.com            // sys/mman.h defined MREMAP_MAYMOVE
6868782Sgblack@eecs.umich.edu            if (!(flags & 1)) {
6878782Sgblack@eecs.umich.edu                warn("can't remap here and MREMAP_MAYMOVE flag not set\n");
68810037SARM gem5 Developers                return -ENOMEM;
68910037SARM gem5 Developers            } else {
69010037SARM gem5 Developers                process->pTable->remap(start, old_length, process->mmap_end);
69110037SARM gem5 Developers                warn("mremapping to totally new vaddr %08p-%08p, adding %d\n",
69210037SARM gem5 Developers                        process->mmap_end, process->mmap_end + new_length, new_length);
69310037SARM gem5 Developers                start = process->mmap_end;
69410037SARM gem5 Developers                // add on the remaining unallocated pages
69510037SARM gem5 Developers                process->allocateMem(start + old_length,
69610037SARM gem5 Developers                                     new_length - old_length);
69710037SARM gem5 Developers                process->mmap_end += new_length;
69810037SARM gem5 Developers                warn("returning %08p as start\n", start);
69910037SARM gem5 Developers                return start;
70010037SARM gem5 Developers            }
70110037SARM gem5 Developers        }
70210037SARM gem5 Developers    } else {
70310037SARM gem5 Developers        process->pTable->unmap(start + new_length, old_length - new_length);
70410037SARM gem5 Developers        return start;
70510037SARM gem5 Developers    }
70610037SARM gem5 Developers}
7077400SAli.Saidi@ARM.com
7087400SAli.Saidi@ARM.com/// Target stat() handler.
7097189Sgblack@eecs.umich.edutemplate <class OS>
71010417Sandreas.hansson@arm.comSyscallReturn
7117189Sgblack@eecs.umich.edustatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
7128782Sgblack@eecs.umich.edu         ThreadContext *tc)
7138782Sgblack@eecs.umich.edu{
7148806Sgblack@eecs.umich.edu    std::string path;
7158806Sgblack@eecs.umich.edu
7168806Sgblack@eecs.umich.edu    int index = 0;
7178806Sgblack@eecs.umich.edu    if (!tc->getMemProxy().tryReadString(path,
7188806Sgblack@eecs.umich.edu                process->getSyscallArg(tc, index))) {
7198806Sgblack@eecs.umich.edu        return -EFAULT;
7208806Sgblack@eecs.umich.edu    }
7218806Sgblack@eecs.umich.edu    Addr bufPtr = process->getSyscallArg(tc, index);
7228806Sgblack@eecs.umich.edu
7238806Sgblack@eecs.umich.edu    // Adjust path for current working directory
7248806Sgblack@eecs.umich.edu    path = process->fullPath(path);
7257189Sgblack@eecs.umich.edu
7268806Sgblack@eecs.umich.edu    struct stat hostBuf;
7278806Sgblack@eecs.umich.edu    int result = stat(path.c_str(), &hostBuf);
7287189Sgblack@eecs.umich.edu
7297189Sgblack@eecs.umich.edu    if (result < 0)
7307189Sgblack@eecs.umich.edu        return -errno;
73110037SARM gem5 Developers
73210037SARM gem5 Developers    copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
73310037SARM gem5 Developers
73410037SARM gem5 Developers    return 0;
73510037SARM gem5 Developers}
73610037SARM gem5 Developers
73710037SARM gem5 Developers
73810037SARM gem5 Developers/// Target stat64() handler.
73910037SARM gem5 Developerstemplate <class OS>
74010037SARM gem5 DevelopersSyscallReturn
74110037SARM gem5 Developersstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
74210037SARM gem5 Developers           ThreadContext *tc)
74310037SARM gem5 Developers{
74410037SARM gem5 Developers    std::string path;
74510037SARM gem5 Developers
74610037SARM gem5 Developers    int index = 0;
74710037SARM gem5 Developers    if (!tc->getMemProxy().tryReadString(path,
74810037SARM gem5 Developers                process->getSyscallArg(tc, index)))
74910037SARM gem5 Developers        return -EFAULT;
75010037SARM gem5 Developers    Addr bufPtr = process->getSyscallArg(tc, index);
75110037SARM gem5 Developers
75210037SARM gem5 Developers    // Adjust path for current working directory
75310037SARM gem5 Developers    path = process->fullPath(path);
75410037SARM gem5 Developers
75510037SARM gem5 Developers#if NO_STAT64
75610037SARM gem5 Developers    struct stat  hostBuf;
75710037SARM gem5 Developers    int result = stat(path.c_str(), &hostBuf);
75810037SARM gem5 Developers#else
75910037SARM gem5 Developers    struct stat64 hostBuf;
76010037SARM gem5 Developers    int result = stat64(path.c_str(), &hostBuf);
76110037SARM gem5 Developers#endif
76210037SARM gem5 Developers
76310037SARM gem5 Developers    if (result < 0)
76410037SARM gem5 Developers        return -errno;
76510037SARM gem5 Developers
76610037SARM gem5 Developers    copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
76710037SARM gem5 Developers
76810037SARM gem5 Developers    return 0;
76910037SARM gem5 Developers}
7707197Sgblack@eecs.umich.edu
77110417Sandreas.hansson@arm.com
7727197Sgblack@eecs.umich.edu/// Target fstat64() handler.
7738782Sgblack@eecs.umich.edutemplate <class OS>
7748782Sgblack@eecs.umich.eduSyscallReturn
7758806Sgblack@eecs.umich.edufstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
7768806Sgblack@eecs.umich.edu            ThreadContext *tc)
7777197Sgblack@eecs.umich.edu{
7788806Sgblack@eecs.umich.edu    int index = 0;
7798806Sgblack@eecs.umich.edu    int fd = process->getSyscallArg(tc, index);
7808806Sgblack@eecs.umich.edu    Addr bufPtr = process->getSyscallArg(tc, index);
78110037SARM gem5 Developers    if (fd < 0 || process->sim_fd(fd) < 0) {
78210037SARM gem5 Developers        // doesn't map to any simulator fd: not a valid target fd
78310037SARM gem5 Developers        return -EBADF;
78410037SARM gem5 Developers    }
78510037SARM gem5 Developers
78610037SARM gem5 Developers#if NO_STAT64
7878806Sgblack@eecs.umich.edu    struct stat  hostBuf;
7888806Sgblack@eecs.umich.edu    int result = fstat(process->sim_fd(fd), &hostBuf);
7898806Sgblack@eecs.umich.edu#else
7908806Sgblack@eecs.umich.edu    struct stat64  hostBuf;
7918806Sgblack@eecs.umich.edu    int result = fstat64(process->sim_fd(fd), &hostBuf);
7928806Sgblack@eecs.umich.edu#endif
7938806Sgblack@eecs.umich.edu
7947197Sgblack@eecs.umich.edu    if (result < 0)
7957197Sgblack@eecs.umich.edu        return -errno;
79610037SARM gem5 Developers
79710037SARM gem5 Developers    copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
79810037SARM gem5 Developers
79910037SARM gem5 Developers    return 0;
80010037SARM gem5 Developers}
80110037SARM gem5 Developers
80210037SARM gem5 Developers
80310037SARM gem5 Developers/// Target lstat() handler.
80410037SARM gem5 Developerstemplate <class OS>
80510037SARM gem5 DevelopersSyscallReturn
80610037SARM gem5 DeveloperslstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
80710037SARM gem5 Developers          ThreadContext *tc)
80810037SARM gem5 Developers{
80910037SARM gem5 Developers    std::string path;
81010037SARM gem5 Developers
81110037SARM gem5 Developers    int index = 0;
81210037SARM gem5 Developers    if (!tc->getMemProxy().tryReadString(path,
81310037SARM gem5 Developers                process->getSyscallArg(tc, index))) {
81410037SARM gem5 Developers        return -EFAULT;
81510037SARM gem5 Developers    }
81610037SARM gem5 Developers    Addr bufPtr = process->getSyscallArg(tc, index);
81710037SARM gem5 Developers
81810037SARM gem5 Developers    // Adjust path for current working directory
81910037SARM gem5 Developers    path = process->fullPath(path);
82010037SARM gem5 Developers
82110037SARM gem5 Developers    struct stat hostBuf;
82210037SARM gem5 Developers    int result = lstat(path.c_str(), &hostBuf);
82310037SARM gem5 Developers
82410037SARM gem5 Developers    if (result < 0)
82510037SARM gem5 Developers        return -errno;
82610037SARM gem5 Developers
82710037SARM gem5 Developers    copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
82810037SARM gem5 Developers
82910037SARM gem5 Developers    return 0;
83010037SARM gem5 Developers}
83110037SARM gem5 Developers
83210037SARM gem5 Developers/// Target lstat64() handler.
83310037SARM gem5 Developerstemplate <class OS>
83410037SARM gem5 DevelopersSyscallReturn
83510037SARM gem5 Developerslstat64Func(SyscallDesc *desc, int callnum, LiveProcess *process,
83610037SARM gem5 Developers            ThreadContext *tc)
83710037SARM gem5 Developers{
83810037SARM gem5 Developers    std::string path;
83910037SARM gem5 Developers
84010037SARM gem5 Developers    int index = 0;
84110037SARM gem5 Developers    if (!tc->getMemProxy().tryReadString(path,
84210037SARM gem5 Developers                process->getSyscallArg(tc, index))) {
84310037SARM gem5 Developers        return -EFAULT;
84410037SARM gem5 Developers    }
84510037SARM gem5 Developers    Addr bufPtr = process->getSyscallArg(tc, index);
84610037SARM gem5 Developers
84711576SDylan.Johnson@ARM.com    // Adjust path for current working directory
84811576SDylan.Johnson@ARM.com    path = process->fullPath(path);
84911576SDylan.Johnson@ARM.com
85011576SDylan.Johnson@ARM.com#if NO_STAT64
85111576SDylan.Johnson@ARM.com    struct stat hostBuf;
85211576SDylan.Johnson@ARM.com    int result = lstat(path.c_str(), &hostBuf);
85310037SARM gem5 Developers#else
85410037SARM gem5 Developers    struct stat64 hostBuf;
85510037SARM gem5 Developers    int result = lstat64(path.c_str(), &hostBuf);
85610037SARM gem5 Developers#endif
85710037SARM gem5 Developers
85810037SARM gem5 Developers    if (result < 0)
85910037SARM gem5 Developers        return -errno;
86010037SARM gem5 Developers
86110037SARM gem5 Developers    copyOutStat64Buf<OS>(tc->getMemProxy(), bufPtr, &hostBuf);
86210037SARM gem5 Developers
86310037SARM gem5 Developers    return 0;
86410037SARM gem5 Developers}
86510037SARM gem5 Developers
86610037SARM gem5 Developers/// Target fstat() handler.
86710037SARM gem5 Developerstemplate <class OS>
86810037SARM gem5 DevelopersSyscallReturn
86910037SARM gem5 DevelopersfstatFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
87010037SARM gem5 Developers          ThreadContext *tc)
87110037SARM gem5 Developers{
87210037SARM gem5 Developers    int index = 0;
87310037SARM gem5 Developers    int fd = process->sim_fd(process->getSyscallArg(tc, index));
87410037SARM gem5 Developers    Addr bufPtr = process->getSyscallArg(tc, index);
87510037SARM gem5 Developers
87610037SARM gem5 Developers    DPRINTF(SyscallVerbose, "fstat(%d, ...)\n", fd);
87710037SARM gem5 Developers
87810037SARM gem5 Developers    if (fd < 0)
87910037SARM gem5 Developers        return -EBADF;
88010037SARM gem5 Developers
88110037SARM gem5 Developers    struct stat hostBuf;
88210037SARM gem5 Developers    int result = fstat(fd, &hostBuf);
88310037SARM gem5 Developers
88410037SARM gem5 Developers    if (result < 0)
88510037SARM gem5 Developers        return -errno;
88610037SARM gem5 Developers
88710037SARM gem5 Developers    copyOutStatBuf<OS>(tc->getMemProxy(), bufPtr, &hostBuf, (fd == 1));
88810037SARM gem5 Developers
88910037SARM gem5 Developers    return 0;
89010037SARM gem5 Developers}
89110037SARM gem5 Developers
89210037SARM gem5 Developers
89310037SARM gem5 Developers/// Target statfs() handler.
89410417Sandreas.hansson@arm.comtemplate <class OS>
89510037SARM gem5 DevelopersSyscallReturn
89610037SARM gem5 DevelopersstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
89710037SARM gem5 Developers           ThreadContext *tc)
89810037SARM gem5 Developers{
89910037SARM gem5 Developers    std::string path;
90010037SARM gem5 Developers
90110037SARM gem5 Developers    int index = 0;
90210037SARM gem5 Developers    if (!tc->getMemProxy().tryReadString(path,
90310037SARM gem5 Developers                process->getSyscallArg(tc, index))) {
90410037SARM gem5 Developers        return -EFAULT;
90510037SARM gem5 Developers    }
90610037SARM gem5 Developers    Addr bufPtr = process->getSyscallArg(tc, index);
90710037SARM gem5 Developers
90810037SARM gem5 Developers    // Adjust path for current working directory
90910037SARM gem5 Developers    path = process->fullPath(path);
91010037SARM gem5 Developers
91110037SARM gem5 Developers    struct statfs hostBuf;
91210037SARM gem5 Developers    int result = statfs(path.c_str(), &hostBuf);
91310037SARM gem5 Developers
91410037SARM gem5 Developers    if (result < 0)
91510037SARM gem5 Developers        return -errno;
91610037SARM gem5 Developers
91710037SARM gem5 Developers    OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
91810037SARM gem5 Developers
91910037SARM gem5 Developers    return 0;
92010037SARM gem5 Developers}
9217362Sgblack@eecs.umich.edu
9227362Sgblack@eecs.umich.edu
92310417Sandreas.hansson@arm.com/// Target fstatfs() handler.
9247362Sgblack@eecs.umich.edutemplate <class OS>
92510037SARM gem5 DevelopersSyscallReturn
92610037SARM gem5 DevelopersfstatfsFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
92710037SARM gem5 Developers            ThreadContext *tc)
92810037SARM gem5 Developers{
92910037SARM gem5 Developers    int index = 0;
93010037SARM gem5 Developers    int fd = process->sim_fd(process->getSyscallArg(tc, index));
93110037SARM gem5 Developers    Addr bufPtr = process->getSyscallArg(tc, index);
93210037SARM gem5 Developers
93310037SARM gem5 Developers    if (fd < 0)
93410037SARM gem5 Developers        return -EBADF;
93510037SARM gem5 Developers
93610037SARM gem5 Developers    struct statfs hostBuf;
93710037SARM gem5 Developers    int result = fstatfs(fd, &hostBuf);
93810037SARM gem5 Developers
93910037SARM gem5 Developers    if (result < 0)
94010037SARM gem5 Developers        return -errno;
94110037SARM gem5 Developers
94210037SARM gem5 Developers    OS::copyOutStatfsBuf(tc->getMemProxy(), bufPtr, &hostBuf);
94310037SARM gem5 Developers
94410037SARM gem5 Developers    return 0;
94510037SARM gem5 Developers}
94610037SARM gem5 Developers
94710037SARM gem5 Developers
94811150Smitch.hayenga@arm.com/// Target writev() handler.
94910037SARM gem5 Developerstemplate <class OS>
95010037SARM gem5 DevelopersSyscallReturn
95110037SARM gem5 DeveloperswritevFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
95210037SARM gem5 Developers           ThreadContext *tc)
95310037SARM gem5 Developers{
95410037SARM gem5 Developers    int index = 0;
95510037SARM gem5 Developers    int fd = process->getSyscallArg(tc, index);
9568205SAli.Saidi@ARM.com    if (fd < 0 || process->sim_fd(fd) < 0) {
95710037SARM gem5 Developers        // doesn't map to any simulator fd: not a valid target fd
95811496Sandreas.sandberg@arm.com        return -EBADF;
95910037SARM gem5 Developers    }
96010037SARM gem5 Developers
96110037SARM gem5 Developers    SETranslatingPortProxy &p = tc->getMemProxy();
96210037SARM gem5 Developers    uint64_t tiov_base = process->getSyscallArg(tc, index);
96310037SARM gem5 Developers    size_t count = process->getSyscallArg(tc, index);
96410037SARM gem5 Developers    struct iovec hiov[count];
96510037SARM gem5 Developers    for (size_t i = 0; i < count; ++i) {
96610037SARM gem5 Developers        typename OS::tgt_iovec tiov;
96710037SARM gem5 Developers
96810037SARM gem5 Developers        p.readBlob(tiov_base + i*sizeof(typename OS::tgt_iovec),
96910037SARM gem5 Developers                   (uint8_t*)&tiov, sizeof(typename OS::tgt_iovec));
97010037SARM gem5 Developers        hiov[i].iov_len = TheISA::gtoh(tiov.iov_len);
97110037SARM gem5 Developers        hiov[i].iov_base = new char [hiov[i].iov_len];
97210037SARM gem5 Developers        p.readBlob(TheISA::gtoh(tiov.iov_base), (uint8_t *)hiov[i].iov_base,
97311585SDylan.Johnson@ARM.com                   hiov[i].iov_len);
97411585SDylan.Johnson@ARM.com    }
97511585SDylan.Johnson@ARM.com
97611585SDylan.Johnson@ARM.com    int result = writev(process->sim_fd(fd), hiov, count);
97711585SDylan.Johnson@ARM.com
97811585SDylan.Johnson@ARM.com    for (size_t i = 0; i < count; ++i)
97911585SDylan.Johnson@ARM.com        delete [] (char *)hiov[i].iov_base;
98011585SDylan.Johnson@ARM.com
98111585SDylan.Johnson@ARM.com    if (result < 0)
98211585SDylan.Johnson@ARM.com        return -errno;
98311585SDylan.Johnson@ARM.com
98410037SARM gem5 Developers    return 0;
98510037SARM gem5 Developers}
98610037SARM gem5 Developers
98710037SARM gem5 Developers
98810037SARM gem5 Developers/// Target mmap() handler.
98910037SARM gem5 Developers///
99010037SARM gem5 Developers/// We don't really handle mmap().  If the target is mmaping an
9917362Sgblack@eecs.umich.edu/// anonymous region or /dev/zero, we can get away with doing basically
9928314Sgeoffrey.blake@arm.com/// nothing (since memory is initialized to zero and the simulator
99310037SARM gem5 Developers/// doesn't really check addresses anyway).
99410037SARM gem5 Developers///
99510037SARM gem5 Developerstemplate <class OS>
99610037SARM gem5 DevelopersSyscallReturn
99710037SARM gem5 DevelopersmmapFunc(SyscallDesc *desc, int num, LiveProcess *p, ThreadContext *tc)
99810037SARM gem5 Developers{
99910037SARM gem5 Developers    int index = 0;
100010037SARM gem5 Developers    Addr start = p->getSyscallArg(tc, index);
100110037SARM gem5 Developers    uint64_t length = p->getSyscallArg(tc, index);
100210037SARM gem5 Developers    index++; // int prot = p->getSyscallArg(tc, index);
100310037SARM gem5 Developers    int flags = p->getSyscallArg(tc, index);
100410037SARM gem5 Developers    int tgt_fd = p->getSyscallArg(tc, index);
100510037SARM gem5 Developers    // int offset = p->getSyscallArg(tc, index);
100610037SARM gem5 Developers
100710037SARM gem5 Developers    if (!(flags & OS::TGT_MAP_ANONYMOUS)) {
100810037SARM gem5 Developers        Process::FdMap *fd_map = p->sim_fd_obj(tgt_fd);
100910037SARM gem5 Developers        if (!fd_map || fd_map->fd < 0) {
101010037SARM gem5 Developers            warn("mmap failing: target fd %d is not valid\n", tgt_fd);
101110037SARM gem5 Developers            return -EBADF;
101210037SARM gem5 Developers        }
101310037SARM gem5 Developers
101410037SARM gem5 Developers        if (fd_map->filename != "/dev/zero") {
101510037SARM gem5 Developers            // This is very likely broken, but leave a warning here
101610037SARM gem5 Developers            // (rather than panic) in case /dev/zero is known by
101710037SARM gem5 Developers            // another name on some platform
101810037SARM gem5 Developers            warn("allowing mmap of file %s; mmap not supported on files"
101910037SARM gem5 Developers                 " other than /dev/zero\n", fd_map->filename);
102010037SARM gem5 Developers        }
102110037SARM gem5 Developers    }
102210037SARM gem5 Developers
102310037SARM gem5 Developers    if ((start  % TheISA::VMPageSize) != 0 ||
102410037SARM gem5 Developers        (length % TheISA::VMPageSize) != 0) {
102510037SARM gem5 Developers        warn("mmap failing: arguments not page-aligned: "
102610037SARM gem5 Developers             "start 0x%x length 0x%x",
102710037SARM gem5 Developers             start, length);
102810037SARM gem5 Developers        return -EINVAL;
102910037SARM gem5 Developers    }
103010037SARM gem5 Developers
103110037SARM gem5 Developers    // are we ok with clobbering existing mappings?  only set this to
103210037SARM gem5 Developers    // true if the user has been warned.
103310037SARM gem5 Developers    bool clobber = false;
103410037SARM gem5 Developers
103510037SARM gem5 Developers    // try to use the caller-provided address if there is one
103610037SARM gem5 Developers    bool use_provided_address = (start != 0);
103710037SARM gem5 Developers
103810037SARM gem5 Developers    if (use_provided_address) {
103910037SARM gem5 Developers        // check to see if the desired address is already in use
104010037SARM gem5 Developers        if (!p->pTable->isUnmapped(start, length)) {
104110037SARM gem5 Developers            // there are existing mappings in the desired range
104210037SARM gem5 Developers            // whether we clobber them or not depends on whether the caller
104310037SARM gem5 Developers            // specified MAP_FIXED
104410037SARM gem5 Developers            if (flags & OS::TGT_MAP_FIXED) {
104510037SARM gem5 Developers                // MAP_FIXED specified: clobber existing mappings
104610037SARM gem5 Developers                warn("mmap: MAP_FIXED at 0x%x overwrites existing mappings\n",
104710037SARM gem5 Developers                     start);
104810037SARM gem5 Developers                clobber = true;
104910037SARM gem5 Developers            } else {
105010037SARM gem5 Developers                // MAP_FIXED not specified: ignore suggested start address
105110037SARM gem5 Developers                warn("mmap: ignoring suggested map address 0x%x\n", start);
105210037SARM gem5 Developers                use_provided_address = false;
105310037SARM gem5 Developers            }
105410037SARM gem5 Developers        }
105510037SARM gem5 Developers    }
105610037SARM gem5 Developers
105710037SARM gem5 Developers    if (!use_provided_address) {
105810037SARM gem5 Developers        // no address provided, or provided address unusable:
105910037SARM gem5 Developers        // pick next address from our "mmap region"
106010037SARM gem5 Developers        if (OS::mmapGrowsDown()) {
106110037SARM gem5 Developers            start = p->mmap_end - length;
106210037SARM gem5 Developers            p->mmap_end = start;
106310037SARM gem5 Developers        } else {
106410037SARM gem5 Developers            start = p->mmap_end;
106510037SARM gem5 Developers            p->mmap_end += length;
106610037SARM gem5 Developers        }
106710037SARM gem5 Developers    }
106810037SARM gem5 Developers
106910037SARM gem5 Developers    p->allocateMem(start, length, clobber);
107010037SARM gem5 Developers
107110037SARM gem5 Developers    return start;
107210037SARM gem5 Developers}
107310037SARM gem5 Developers
107410037SARM gem5 Developers/// Target getrlimit() handler.
107510037SARM gem5 Developerstemplate <class OS>
107610037SARM gem5 DevelopersSyscallReturn
107710037SARM gem5 DevelopersgetrlimitFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
107810037SARM gem5 Developers        ThreadContext *tc)
107910037SARM gem5 Developers{
108010037SARM gem5 Developers    int index = 0;
108110037SARM gem5 Developers    unsigned resource = process->getSyscallArg(tc, index);
108210037SARM gem5 Developers    TypedBufferArg<typename OS::rlimit> rlp(process->getSyscallArg(tc, index));
108310037SARM gem5 Developers
108410037SARM gem5 Developers    switch (resource) {
108510037SARM gem5 Developers        case OS::TGT_RLIMIT_STACK:
108610037SARM gem5 Developers            // max stack size in bytes: make up a number (8MB for now)
108710037SARM gem5 Developers            rlp->rlim_cur = rlp->rlim_max = 8 * 1024 * 1024;
108810037SARM gem5 Developers            rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
108910037SARM gem5 Developers            rlp->rlim_max = TheISA::htog(rlp->rlim_max);
109010037SARM gem5 Developers            break;
109110037SARM gem5 Developers
109210037SARM gem5 Developers        case OS::TGT_RLIMIT_DATA:
109310037SARM gem5 Developers            // max data segment size in bytes: make up a number
109410037SARM gem5 Developers            rlp->rlim_cur = rlp->rlim_max = 256 * 1024 * 1024;
109510037SARM gem5 Developers            rlp->rlim_cur = TheISA::htog(rlp->rlim_cur);
109610037SARM gem5 Developers            rlp->rlim_max = TheISA::htog(rlp->rlim_max);
109710037SARM gem5 Developers            break;
109810037SARM gem5 Developers
109910037SARM gem5 Developers        default:
110010037SARM gem5 Developers            std::cerr << "getrlimitFunc: unimplemented resource " << resource
110110037SARM gem5 Developers                << std::endl;
110210037SARM gem5 Developers            abort();
110310037SARM gem5 Developers            break;
110410037SARM gem5 Developers    }
110510037SARM gem5 Developers
110610037SARM gem5 Developers    rlp.copyOut(tc->getMemProxy());
110710037SARM gem5 Developers    return 0;
110810037SARM gem5 Developers}
110910037SARM gem5 Developers
111010037SARM gem5 Developers/// Target gettimeofday() handler.
111110037SARM gem5 Developerstemplate <class OS>
111210037SARM gem5 DevelopersSyscallReturn
111310037SARM gem5 DevelopersgettimeofdayFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
111410037SARM gem5 Developers        ThreadContext *tc)
111510037SARM gem5 Developers{
111610037SARM gem5 Developers    int index = 0;
111710037SARM gem5 Developers    TypedBufferArg<typename OS::timeval> tp(process->getSyscallArg(tc, index));
111810037SARM gem5 Developers
111910037SARM gem5 Developers    getElapsedTime(tp->tv_sec, tp->tv_usec);
112010037SARM gem5 Developers    tp->tv_sec += seconds_since_epoch;
112110037SARM gem5 Developers    tp->tv_sec = TheISA::htog(tp->tv_sec);
112210037SARM gem5 Developers    tp->tv_usec = TheISA::htog(tp->tv_usec);
112310037SARM gem5 Developers
112410037SARM gem5 Developers    tp.copyOut(tc->getMemProxy());
112510037SARM gem5 Developers
112610037SARM gem5 Developers    return 0;
112710037SARM gem5 Developers}
112810037SARM gem5 Developers
112910037SARM gem5 Developers
113011581SDylan.Johnson@ARM.com/// Target utimes() handler.
113110037SARM gem5 Developerstemplate <class OS>
113210037SARM gem5 DevelopersSyscallReturn
113310037SARM gem5 DevelopersutimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
113410037SARM gem5 Developers           ThreadContext *tc)
113510037SARM gem5 Developers{
113610037SARM gem5 Developers    std::string path;
113710037SARM gem5 Developers
113810037SARM gem5 Developers    int index = 0;
113910037SARM gem5 Developers    if (!tc->getMemProxy().tryReadString(path,
114010367SAndrew.Bardsley@arm.com                process->getSyscallArg(tc, index))) {
114110367SAndrew.Bardsley@arm.com        return -EFAULT;
114210037SARM gem5 Developers    }
114310037SARM gem5 Developers
114410037SARM gem5 Developers    TypedBufferArg<typename OS::timeval [2]>
114510037SARM gem5 Developers        tp(process->getSyscallArg(tc, index));
114610037SARM gem5 Developers    tp.copyIn(tc->getMemProxy());
114710037SARM gem5 Developers
114810037SARM gem5 Developers    struct timeval hostTimeval[2];
114910037SARM gem5 Developers    for (int i = 0; i < 2; ++i)
115010037SARM gem5 Developers    {
115110037SARM gem5 Developers        hostTimeval[i].tv_sec = TheISA::gtoh((*tp)[i].tv_sec);
115210037SARM gem5 Developers        hostTimeval[i].tv_usec = TheISA::gtoh((*tp)[i].tv_usec);
115310037SARM gem5 Developers    }
115410037SARM gem5 Developers
115510037SARM gem5 Developers    // Adjust path for current working directory
115610037SARM gem5 Developers    path = process->fullPath(path);
115710037SARM gem5 Developers
115810037SARM gem5 Developers    int result = utimes(path.c_str(), hostTimeval);
115910037SARM gem5 Developers
116010037SARM gem5 Developers    if (result < 0)
116110037SARM gem5 Developers        return -errno;
116210037SARM gem5 Developers
116310037SARM gem5 Developers    return 0;
116410037SARM gem5 Developers}
116510037SARM gem5 Developers/// Target getrusage() function.
116610037SARM gem5 Developerstemplate <class OS>
116710037SARM gem5 DevelopersSyscallReturn
116810037SARM gem5 DevelopersgetrusageFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
116910037SARM gem5 Developers              ThreadContext *tc)
117010037SARM gem5 Developers{
117110037SARM gem5 Developers    int index = 0;
117210037SARM gem5 Developers    int who = process->getSyscallArg(tc, index); // THREAD, SELF, or CHILDREN
117310037SARM gem5 Developers    TypedBufferArg<typename OS::rusage> rup(process->getSyscallArg(tc, index));
117410037SARM gem5 Developers
117510037SARM gem5 Developers    rup->ru_utime.tv_sec = 0;
117610037SARM gem5 Developers    rup->ru_utime.tv_usec = 0;
117710037SARM gem5 Developers    rup->ru_stime.tv_sec = 0;
117810037SARM gem5 Developers    rup->ru_stime.tv_usec = 0;
117910037SARM gem5 Developers    rup->ru_maxrss = 0;
118010037SARM gem5 Developers    rup->ru_ixrss = 0;
118110037SARM gem5 Developers    rup->ru_idrss = 0;
118210037SARM gem5 Developers    rup->ru_isrss = 0;
118310037SARM gem5 Developers    rup->ru_minflt = 0;
118410037SARM gem5 Developers    rup->ru_majflt = 0;
118510037SARM gem5 Developers    rup->ru_nswap = 0;
118610037SARM gem5 Developers    rup->ru_inblock = 0;
118710037SARM gem5 Developers    rup->ru_oublock = 0;
118810037SARM gem5 Developers    rup->ru_msgsnd = 0;
118910037SARM gem5 Developers    rup->ru_msgrcv = 0;
119010037SARM gem5 Developers    rup->ru_nsignals = 0;
119110037SARM gem5 Developers    rup->ru_nvcsw = 0;
119210037SARM gem5 Developers    rup->ru_nivcsw = 0;
119310037SARM gem5 Developers
119410037SARM gem5 Developers    switch (who) {
119510037SARM gem5 Developers      case OS::TGT_RUSAGE_SELF:
119611581SDylan.Johnson@ARM.com        getElapsedTime(rup->ru_utime.tv_sec, rup->ru_utime.tv_usec);
119710037SARM gem5 Developers        rup->ru_utime.tv_sec = TheISA::htog(rup->ru_utime.tv_sec);
119810037SARM gem5 Developers        rup->ru_utime.tv_usec = TheISA::htog(rup->ru_utime.tv_usec);
119910037SARM gem5 Developers        break;
120010037SARM gem5 Developers
120110037SARM gem5 Developers      case OS::TGT_RUSAGE_CHILDREN:
120210037SARM gem5 Developers        // do nothing.  We have no child processes, so they take no time.
120310037SARM gem5 Developers        break;
120410037SARM gem5 Developers
120510037SARM gem5 Developers      default:
120610037SARM gem5 Developers        // don't really handle THREAD or CHILDREN, but just warn and
120710037SARM gem5 Developers        // plow ahead
120810037SARM gem5 Developers        warn("getrusage() only supports RUSAGE_SELF.  Parameter %d ignored.",
120910037SARM gem5 Developers             who);
121010037SARM gem5 Developers    }
121110037SARM gem5 Developers
121210037SARM gem5 Developers    rup.copyOut(tc->getMemProxy());
121310037SARM gem5 Developers
121410037SARM gem5 Developers    return 0;
121510037SARM gem5 Developers}
121610037SARM gem5 Developers
121710037SARM gem5 Developers/// Target times() function.
121810037SARM gem5 Developerstemplate <class OS>
121910037SARM gem5 DevelopersSyscallReturn
122010037SARM gem5 DeveloperstimesFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
122110037SARM gem5 Developers           ThreadContext *tc)
122210037SARM gem5 Developers{
122310037SARM gem5 Developers    int index = 0;
122410037SARM gem5 Developers    TypedBufferArg<typename OS::tms> bufp(process->getSyscallArg(tc, index));
122510037SARM gem5 Developers
122610037SARM gem5 Developers    // Fill in the time structure (in clocks)
122710037SARM gem5 Developers    int64_t clocks = curTick() * OS::M5_SC_CLK_TCK / SimClock::Int::s;
122810037SARM gem5 Developers    bufp->tms_utime = clocks;
122910037SARM gem5 Developers    bufp->tms_stime = 0;
123010037SARM gem5 Developers    bufp->tms_cutime = 0;
123110037SARM gem5 Developers    bufp->tms_cstime = 0;
123210037SARM gem5 Developers
123310037SARM gem5 Developers    // Convert to host endianness
123410037SARM gem5 Developers    bufp->tms_utime = TheISA::htog(bufp->tms_utime);
123510037SARM gem5 Developers
123610037SARM gem5 Developers    // Write back
123710037SARM gem5 Developers    bufp.copyOut(tc->getMemProxy());
123810037SARM gem5 Developers
123910037SARM gem5 Developers    // Return clock ticks since system boot
124010037SARM gem5 Developers    return clocks;
124110037SARM gem5 Developers}
124210037SARM gem5 Developers
124310037SARM gem5 Developers/// Target time() function.
124410037SARM gem5 Developerstemplate <class OS>
124510037SARM gem5 DevelopersSyscallReturn
124610037SARM gem5 DeveloperstimeFunc(SyscallDesc *desc, int callnum, LiveProcess *process,
124710037SARM gem5 Developers           ThreadContext *tc)
124810037SARM gem5 Developers{
124910037SARM gem5 Developers    typename OS::time_t sec, usec;
125010037SARM gem5 Developers    getElapsedTime(sec, usec);
125110037SARM gem5 Developers    sec += seconds_since_epoch;
125210037SARM gem5 Developers
125310037SARM gem5 Developers    int index = 0;
125410037SARM gem5 Developers    Addr taddr = (Addr)process->getSyscallArg(tc, index);
125510037SARM gem5 Developers    if(taddr != 0) {
125610037SARM gem5 Developers        typename OS::time_t t = sec;
125710417Sandreas.hansson@arm.com        t = TheISA::htog(t);
125810037SARM gem5 Developers        SETranslatingPortProxy &p = tc->getMemProxy();
125910037SARM gem5 Developers        p.writeBlob(taddr, (uint8_t*)&t, (int)sizeof(typename OS::time_t));
126010037SARM gem5 Developers    }
126110037SARM gem5 Developers    return sec;
126210037SARM gem5 Developers}
126310037SARM gem5 Developers
126410037SARM gem5 Developers
126510037SARM gem5 Developers#endif // __SIM_SYSCALL_EMUL_HH__
126610037SARM gem5 Developers