linux.cc revision 11793
15795Ssaidi@eecs.umich.edu/* 25795Ssaidi@eecs.umich.edu * Copyright (c) 2009 The Regents of The University of Michigan 35795Ssaidi@eecs.umich.edu * All rights reserved. 45795Ssaidi@eecs.umich.edu * 55795Ssaidi@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 65795Ssaidi@eecs.umich.edu * modification, are permitted provided that the following conditions are 75795Ssaidi@eecs.umich.edu * met: redistributions of source code must retain the above copyright 85795Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 95795Ssaidi@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 105795Ssaidi@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 115795Ssaidi@eecs.umich.edu * documentation and/or other materials provided with the distribution; 125795Ssaidi@eecs.umich.edu * neither the name of the copyright holders nor the names of its 135795Ssaidi@eecs.umich.edu * contributors may be used to endorse or promote products derived from 145795Ssaidi@eecs.umich.edu * this software without specific prior written permission. 155795Ssaidi@eecs.umich.edu * 165795Ssaidi@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 175795Ssaidi@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 185795Ssaidi@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 195795Ssaidi@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 205795Ssaidi@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 215795Ssaidi@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 225795Ssaidi@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235795Ssaidi@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245795Ssaidi@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255795Ssaidi@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 265795Ssaidi@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275795Ssaidi@eecs.umich.edu * 285795Ssaidi@eecs.umich.edu * Authors: Ali Saidi 295795Ssaidi@eecs.umich.edu */ 305795Ssaidi@eecs.umich.edu 3111793Sbrandon.potter@amd.com#include "kern/linux/linux.hh" 3211793Sbrandon.potter@amd.com 336712Snate@binkert.org#include <cstdio> 345795Ssaidi@eecs.umich.edu#include <string> 355795Ssaidi@eecs.umich.edu 365795Ssaidi@eecs.umich.edu#include "cpu/thread_context.hh" 378232Snate@binkert.org#include "debug/SyscallVerbose.hh" 385795Ssaidi@eecs.umich.edu#include "sim/process.hh" 395795Ssaidi@eecs.umich.edu#include "sim/system.hh" 405795Ssaidi@eecs.umich.edu 415795Ssaidi@eecs.umich.eduint 429143Ssteve.reinhardt@amd.comLinux::openSpecialFile(std::string path, LiveProcess *process, 439143Ssteve.reinhardt@amd.com ThreadContext *tc) 445795Ssaidi@eecs.umich.edu{ 455795Ssaidi@eecs.umich.edu DPRINTF(SyscallVerbose, "Opening special file: %s\n", path.c_str()); 465795Ssaidi@eecs.umich.edu if (path.compare(0, 13, "/proc/meminfo") == 0) { 475795Ssaidi@eecs.umich.edu std::string data = Linux::procMeminfo(process, tc); 485795Ssaidi@eecs.umich.edu FILE *f = tmpfile(); 495795Ssaidi@eecs.umich.edu int fd = fileno(f); 506227Snate@binkert.org size_t ret M5_VAR_USED = fwrite(data.c_str(), 1, data.size(), f); 515795Ssaidi@eecs.umich.edu assert(ret == data.size()); 525795Ssaidi@eecs.umich.edu rewind(f); 535795Ssaidi@eecs.umich.edu return fd; 545795Ssaidi@eecs.umich.edu } 555795Ssaidi@eecs.umich.edu 569143Ssteve.reinhardt@amd.com warn("Attempting to open special file: %s. Ignoring. Simulation may" 575795Ssaidi@eecs.umich.edu " take un-expected code path or be non-deterministic until proper" 585795Ssaidi@eecs.umich.edu " handling is implemented.\n", path.c_str()); 595795Ssaidi@eecs.umich.edu return -1; 605795Ssaidi@eecs.umich.edu} 615795Ssaidi@eecs.umich.edu 625795Ssaidi@eecs.umich.edustd::string 635795Ssaidi@eecs.umich.eduLinux::procMeminfo(LiveProcess *process, ThreadContext *tc) 645795Ssaidi@eecs.umich.edu{ 655795Ssaidi@eecs.umich.edu return csprintf("MemTotal:%12d kB\nMemFree: %12d kB\n", 665795Ssaidi@eecs.umich.edu process->system->memSize() >> 10, 675795Ssaidi@eecs.umich.edu process->system->freeMemSize() >> 10); 685795Ssaidi@eecs.umich.edu} 695795Ssaidi@eecs.umich.edu 70