linux.cc revision 5795
14120Sgblack@eecs.umich.edu/* 24120Sgblack@eecs.umich.edu * Copyright (c) 2009 The Regents of The University of Michigan 34120Sgblack@eecs.umich.edu * All rights reserved. 44120Sgblack@eecs.umich.edu * 54120Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 64120Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 74120Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 84120Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 94120Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 104120Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 114120Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 124120Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 134120Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 144120Sgblack@eecs.umich.edu * this software without specific prior written permission. 154120Sgblack@eecs.umich.edu * 164120Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 174120Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 184120Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 194120Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 204120Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 214120Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 224120Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 234120Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 244120Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 254120Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 264120Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 274120Sgblack@eecs.umich.edu * 284120Sgblack@eecs.umich.edu * Authors: Ali Saidi 294120Sgblack@eecs.umich.edu */ 304120Sgblack@eecs.umich.edu 314120Sgblack@eecs.umich.edu#include <string> 324120Sgblack@eecs.umich.edu 334120Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 344120Sgblack@eecs.umich.edu#include "kern/linux/linux.hh" 354120Sgblack@eecs.umich.edu#include "sim/process.hh" 364120Sgblack@eecs.umich.edu#include "sim/system.hh" 374120Sgblack@eecs.umich.edu 384120Sgblack@eecs.umich.eduint 394120Sgblack@eecs.umich.eduLinux::openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc) 404120Sgblack@eecs.umich.edu{ 414120Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "Opening special file: %s\n", path.c_str()); 424120Sgblack@eecs.umich.edu if (path.compare(0, 13, "/proc/meminfo") == 0) { 434120Sgblack@eecs.umich.edu std::string data = Linux::procMeminfo(process, tc); 444120Sgblack@eecs.umich.edu FILE *f = tmpfile(); 454120Sgblack@eecs.umich.edu int fd = fileno(f); 464120Sgblack@eecs.umich.edu int ret M5_VAR_USED = fwrite(data.c_str(), 1, data.size(), f); 474120Sgblack@eecs.umich.edu assert(ret == data.size()); 484120Sgblack@eecs.umich.edu rewind(f); 494120Sgblack@eecs.umich.edu return fd; 504120Sgblack@eecs.umich.edu } 514120Sgblack@eecs.umich.edu 524120Sgblack@eecs.umich.edu warn("Attempting to open special file: %s. Ignorning. Simulation may" 534120Sgblack@eecs.umich.edu " take un-expected code path or be non-deterministic until proper" 544120Sgblack@eecs.umich.edu " handling is implemented.\n", path.c_str()); 554120Sgblack@eecs.umich.edu return -1; 564120Sgblack@eecs.umich.edu} 574120Sgblack@eecs.umich.edu 584120Sgblack@eecs.umich.edustd::string 594120Sgblack@eecs.umich.eduLinux::procMeminfo(LiveProcess *process, ThreadContext *tc) 604120Sgblack@eecs.umich.edu{ 614166Sgblack@eecs.umich.edu return csprintf("MemTotal:%12d kB\nMemFree: %12d kB\n", 624141Sgblack@eecs.umich.edu process->system->memSize() >> 10, 634136Sgblack@eecs.umich.edu process->system->freeMemSize() >> 10); 645086Sgblack@eecs.umich.edu} 654136Sgblack@eecs.umich.edu 664141Sgblack@eecs.umich.edu