vtophys.cc revision 7901
15086Sgblack@eecs.umich.edu/* 25086Sgblack@eecs.umich.edu * Copyright (c) 2007 The Hewlett-Packard Development Company 35086Sgblack@eecs.umich.edu * All rights reserved. 45086Sgblack@eecs.umich.edu * 57087Snate@binkert.org * The license below extends only to copyright in the software and shall 67087Snate@binkert.org * not be construed as granting a license to any other intellectual 77087Snate@binkert.org * property including but not limited to intellectual property relating 87087Snate@binkert.org * to a hardware implementation of the functionality of the software 97087Snate@binkert.org * licensed hereunder. You may use the software subject to the license 107087Snate@binkert.org * terms below provided that you ensure that this notice is replicated 117087Snate@binkert.org * unmodified and in its entirety in all distributions of the software, 127087Snate@binkert.org * modified or unmodified, in source code or in binary form. 135086Sgblack@eecs.umich.edu * 147087Snate@binkert.org * Redistribution and use in source and binary forms, with or without 157087Snate@binkert.org * modification, are permitted provided that the following conditions are 167087Snate@binkert.org * met: redistributions of source code must retain the above copyright 177087Snate@binkert.org * notice, this list of conditions and the following disclaimer; 187087Snate@binkert.org * redistributions in binary form must reproduce the above copyright 197087Snate@binkert.org * notice, this list of conditions and the following disclaimer in the 207087Snate@binkert.org * documentation and/or other materials provided with the distribution; 217087Snate@binkert.org * neither the name of the copyright holders nor the names of its 225086Sgblack@eecs.umich.edu * contributors may be used to endorse or promote products derived from 237087Snate@binkert.org * this software without specific prior written permission. 245086Sgblack@eecs.umich.edu * 255086Sgblack@eecs.umich.edu * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 265086Sgblack@eecs.umich.edu * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 275086Sgblack@eecs.umich.edu * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 285086Sgblack@eecs.umich.edu * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 295086Sgblack@eecs.umich.edu * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 305086Sgblack@eecs.umich.edu * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 315086Sgblack@eecs.umich.edu * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 325086Sgblack@eecs.umich.edu * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 335086Sgblack@eecs.umich.edu * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 345086Sgblack@eecs.umich.edu * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 355086Sgblack@eecs.umich.edu * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 365086Sgblack@eecs.umich.edu * 375086Sgblack@eecs.umich.edu * Authors: Gabe Black 385086Sgblack@eecs.umich.edu */ 395086Sgblack@eecs.umich.edu 405086Sgblack@eecs.umich.edu#include <string> 415086Sgblack@eecs.umich.edu 427901Shestness@cs.utexas.edu#include "arch/x86/pagetable_walker.hh" 437901Shestness@cs.utexas.edu#include "arch/x86/tlb.hh" 445086Sgblack@eecs.umich.edu#include "arch/x86/vtophys.hh" 457901Shestness@cs.utexas.edu#include "base/trace.hh" 467901Shestness@cs.utexas.edu#include "config/full_system.hh" 477901Shestness@cs.utexas.edu#include "cpu/thread_context.hh" 487901Shestness@cs.utexas.edu#include "sim/fault.hh" 495086Sgblack@eecs.umich.edu 505086Sgblack@eecs.umich.eduusing namespace std; 515086Sgblack@eecs.umich.edu 525086Sgblack@eecs.umich.edunamespace X86ISA 535086Sgblack@eecs.umich.edu{ 547901Shestness@cs.utexas.edu Addr 557901Shestness@cs.utexas.edu vtophys(Addr vaddr) 565086Sgblack@eecs.umich.edu { 577901Shestness@cs.utexas.edu#if FULL_SYSTEM 587901Shestness@cs.utexas.edu panic("Need access to page tables\n"); 597901Shestness@cs.utexas.edu#endif 605086Sgblack@eecs.umich.edu return vaddr; 615086Sgblack@eecs.umich.edu } 625086Sgblack@eecs.umich.edu 637901Shestness@cs.utexas.edu Addr 647901Shestness@cs.utexas.edu vtophys(ThreadContext *tc, Addr vaddr) 655086Sgblack@eecs.umich.edu { 667901Shestness@cs.utexas.edu#if FULL_SYSTEM 677901Shestness@cs.utexas.edu Walker *walker = tc->getDTBPtr()->getWalker(); 687901Shestness@cs.utexas.edu Addr size; 697901Shestness@cs.utexas.edu Addr addr = vaddr; 707901Shestness@cs.utexas.edu Fault fault = walker->startFunctional(tc, addr, size, BaseTLB::Read); 717901Shestness@cs.utexas.edu if (fault != NoFault) 727901Shestness@cs.utexas.edu panic("vtophys page walk returned fault\n"); 737901Shestness@cs.utexas.edu Addr masked_addr = vaddr & (size - 1); 747901Shestness@cs.utexas.edu Addr paddr = addr | masked_addr; 757901Shestness@cs.utexas.edu DPRINTF(VtoPhys, "vtophys(%#x) -> %#x\n", vaddr, paddr); 767901Shestness@cs.utexas.edu return paddr; 777901Shestness@cs.utexas.edu#endif 787901Shestness@cs.utexas.edu return vaddr; 795086Sgblack@eecs.umich.edu } 805086Sgblack@eecs.umich.edu} 81