linux.cc revision 9143
17139Sgblack@eecs.umich.edu/* 27139Sgblack@eecs.umich.edu * Copyright (c) 2009 The Regents of The University of Michigan 37139Sgblack@eecs.umich.edu * All rights reserved. 47139Sgblack@eecs.umich.edu * 57139Sgblack@eecs.umich.edu * Redistribution and use in source and binary forms, with or without 67139Sgblack@eecs.umich.edu * modification, are permitted provided that the following conditions are 77139Sgblack@eecs.umich.edu * met: redistributions of source code must retain the above copyright 87139Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer; 97139Sgblack@eecs.umich.edu * redistributions in binary form must reproduce the above copyright 107139Sgblack@eecs.umich.edu * notice, this list of conditions and the following disclaimer in the 117139Sgblack@eecs.umich.edu * documentation and/or other materials provided with the distribution; 127139Sgblack@eecs.umich.edu * neither the name of the copyright holders nor the names of its 137139Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 147139Sgblack@eecs.umich.edu * this software without specific prior written permission. 157139Sgblack@eecs.umich.edu * 167139Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 177139Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 187139Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 197139Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 207139Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 217139Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 227139Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 237139Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 247139Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 257139Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 267139Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 277139Sgblack@eecs.umich.edu * 287139Sgblack@eecs.umich.edu * Authors: Ali Saidi 297139Sgblack@eecs.umich.edu */ 307139Sgblack@eecs.umich.edu 317139Sgblack@eecs.umich.edu#include <cstdio> 327139Sgblack@eecs.umich.edu#include <string> 337139Sgblack@eecs.umich.edu 347139Sgblack@eecs.umich.edu#include "cpu/thread_context.hh" 357139Sgblack@eecs.umich.edu#include "debug/SyscallVerbose.hh" 367139Sgblack@eecs.umich.edu#include "kern/linux/linux.hh" 377139Sgblack@eecs.umich.edu#include "sim/process.hh" 387139Sgblack@eecs.umich.edu#include "sim/system.hh" 397139Sgblack@eecs.umich.edu 407139Sgblack@eecs.umich.eduint 417139Sgblack@eecs.umich.eduLinux::openSpecialFile(std::string path, LiveProcess *process, 427139Sgblack@eecs.umich.edu ThreadContext *tc) 437146Sgblack@eecs.umich.edu{ 447141Sgblack@eecs.umich.edu DPRINTF(SyscallVerbose, "Opening special file: %s\n", path.c_str()); 457139Sgblack@eecs.umich.edu if (path.compare(0, 13, "/proc/meminfo") == 0) { 467146Sgblack@eecs.umich.edu std::string data = Linux::procMeminfo(process, tc); 477141Sgblack@eecs.umich.edu FILE *f = tmpfile(); 487139Sgblack@eecs.umich.edu int fd = fileno(f); 497139Sgblack@eecs.umich.edu size_t ret M5_VAR_USED = fwrite(data.c_str(), 1, data.size(), f); 507139Sgblack@eecs.umich.edu assert(ret == data.size()); 517146Sgblack@eecs.umich.edu rewind(f); 527141Sgblack@eecs.umich.edu return fd; 537139Sgblack@eecs.umich.edu } 547146Sgblack@eecs.umich.edu 557141Sgblack@eecs.umich.edu warn("Attempting to open special file: %s. Ignoring. Simulation may" 567139Sgblack@eecs.umich.edu " take un-expected code path or be non-deterministic until proper" 577139Sgblack@eecs.umich.edu " handling is implemented.\n", path.c_str()); 587139Sgblack@eecs.umich.edu return -1; 597139Sgblack@eecs.umich.edu} 607139Sgblack@eecs.umich.edu 617141Sgblack@eecs.umich.edustd::string 627139Sgblack@eecs.umich.eduLinux::procMeminfo(LiveProcess *process, ThreadContext *tc) 637139Sgblack@eecs.umich.edu{ 647141Sgblack@eecs.umich.edu return csprintf("MemTotal:%12d kB\nMemFree: %12d kB\n", 657141Sgblack@eecs.umich.edu process->system->memSize() >> 10, 667141Sgblack@eecs.umich.edu process->system->freeMemSize() >> 10); 677139Sgblack@eecs.umich.edu} 687139Sgblack@eecs.umich.edu 697139Sgblack@eecs.umich.edu