linux.cc revision 6227
12SN/A/* 21762SN/A * Copyright (c) 2009 The Regents of The University of Michigan 32SN/A * All rights reserved. 42SN/A * 52SN/A * Redistribution and use in source and binary forms, with or without 62SN/A * modification, are permitted provided that the following conditions are 72SN/A * met: redistributions of source code must retain the above copyright 82SN/A * notice, this list of conditions and the following disclaimer; 92SN/A * redistributions in binary form must reproduce the above copyright 102SN/A * notice, this list of conditions and the following disclaimer in the 112SN/A * documentation and/or other materials provided with the distribution; 122SN/A * neither the name of the copyright holders nor the names of its 132SN/A * contributors may be used to endorse or promote products derived from 142SN/A * this software without specific prior written permission. 152SN/A * 162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272665Ssaidi@eecs.umich.edu * 282665Ssaidi@eecs.umich.edu * Authors: Ali Saidi 292665Ssaidi@eecs.umich.edu */ 302SN/A 312SN/A#include <string> 322SN/A 332SN/A#include "cpu/thread_context.hh" 342SN/A#include "kern/linux/linux.hh" 352SN/A#include "sim/process.hh" 362SN/A#include "sim/system.hh" 371492SN/A 381858SN/Aint 391717SN/ALinux::openSpecialFile(std::string path, LiveProcess *process, ThreadContext *tc) 402680Sktlim@umich.edu{ 4156SN/A DPRINTF(SyscallVerbose, "Opening special file: %s\n", path.c_str()); 421492SN/A if (path.compare(0, 13, "/proc/meminfo") == 0) { 431696SN/A std::string data = Linux::procMeminfo(process, tc); 442190SN/A FILE *f = tmpfile(); 452SN/A int fd = fileno(f); 462SN/A size_t ret M5_VAR_USED = fwrite(data.c_str(), 1, data.size(), f); 472SN/A assert(ret == data.size()); 482SN/A rewind(f); 492SN/A return fd; 502SN/A } 512SN/A 522SN/A warn("Attempting to open special file: %s. Ignorning. Simulation may" 532SN/A " take un-expected code path or be non-deterministic until proper" 542SN/A " handling is implemented.\n", path.c_str()); 552SN/A return -1; 562SN/A} 572SN/A 582SN/Astd::string 592SN/ALinux::procMeminfo(LiveProcess *process, ThreadContext *tc) 602SN/A{ 612SN/A return csprintf("MemTotal:%12d kB\nMemFree: %12d kB\n", 622SN/A process->system->memSize() >> 10, 632SN/A process->system->freeMemSize() >> 10); 642SN/A} 652SN/A 662SN/A