| /* |
| * Copyright (c) 2003-2007 The Regents of The University of Michigan |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Authors: Gabe Black |
| */ |
| |
| /* |
| * Copyright (c) 2007 The Hewlett-Packard Development Company |
| * All rights reserved. |
| * |
| * Redistribution and use of this software in source and binary forms, |
| * with or without modification, are permitted provided that the |
| * following conditions are met: |
| * |
| * The software must be used only for Non-Commercial Use which means any |
| * use which is NOT directed to receiving any direct monetary |
| * compensation for, or commercial advantage from such use. Illustrative |
| * examples of non-commercial use are academic research, personal study, |
| * teaching, education and corporate research & development. |
| * Illustrative examples of commercial use are distributing products for |
| * commercial advantage and providing services using the software for |
| * commercial advantage. |
| * |
| * If you wish to use this software or functionality therein that may be |
| * covered by patents for commercial use, please contact: |
| * Director of Intellectual Property Licensing |
| * Office of Strategy and Technology |
| * Hewlett-Packard Company |
| * 1501 Page Mill Road |
| * Palo Alto, California 94304 |
| * |
| * Redistributions of source code must retain the above copyright notice, |
| * this list of conditions and the following disclaimer. Redistributions |
| * in binary form must reproduce the above copyright notice, this list of |
| * conditions and the following disclaimer in the documentation and/or |
| * other materials provided with the distribution. Neither the name of |
| * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. No right of |
| * sublicense is granted herewith. Derivatives of the software and |
| * output created using the software may be prepared, but only for |
| * Non-Commercial Uses. Derivatives of the software may be shared with |
| * others provided: (i) the others agree to abide by the list of |
| * conditions herein which includes the Non-Commercial Use restrictions; |
| * and (ii) such Derivatives of the software include the above copyright |
| * notice to acknowledge the contribution from this software where |
| * applicable, this list of conditions and the disclaimer below. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * Authors: Gabe Black |
| */ |
| |
| #include "arch/x86/faults.hh" |
| #include "base/trace.hh" |
| #include "config/full_system.hh" |
| #include "cpu/thread_context.hh" |
| #if !FULL_SYSTEM |
| #include "arch/x86/isa_traits.hh" |
| #include "mem/page_table.hh" |
| #include "sim/process.hh" |
| #else |
| #include "arch/x86/tlb.hh" |
| #endif |
| |
| namespace X86ISA |
| { |
| #if FULL_SYSTEM |
| void X86Trap::invoke(ThreadContext * tc) |
| { |
| panic("X86 faults are not implemented!"); |
| } |
| |
| void X86Abort::invoke(ThreadContext * tc) |
| { |
| panic("X86 faults are not implemented!"); |
| } |
| |
| void X86Interrupt::invoke(ThreadContext * tc) |
| { |
| panic("X86 faults are not implemented!"); |
| } |
| |
| void FakeITLBFault::invoke(ThreadContext * tc) |
| { |
| // Start the page table walker. |
| tc->getITBPtr()->walk(tc, vaddr); |
| } |
| |
| void FakeDTLBFault::invoke(ThreadContext * tc) |
| { |
| // Start the page table walker. |
| tc->getDTBPtr()->walk(tc, vaddr); |
| } |
| |
| #else // !FULL_SYSTEM |
| void FakeITLBFault::invoke(ThreadContext * tc) |
| { |
| DPRINTF(TLB, "Invoking an ITLB fault for address %#x at pc %#x.\n", |
| vaddr, tc->readPC()); |
| Process *p = tc->getProcessPtr(); |
| TlbEntry entry; |
| bool success = p->pTable->lookup(vaddr, entry); |
| if(!success) { |
| panic("Tried to execute unmapped address %#x.\n", vaddr); |
| } else { |
| Addr alignedVaddr = p->pTable->pageAlign(vaddr); |
| DPRINTF(TLB, "Mapping %#x to %#x\n", alignedVaddr, |
| entry.pageStart()); |
| tc->getITBPtr()->insert(alignedVaddr, entry); |
| } |
| } |
| |
| void FakeDTLBFault::invoke(ThreadContext * tc) |
| { |
| DPRINTF(TLB, "Invoking an DTLB fault for address %#x at pc %#x.\n", |
| vaddr, tc->readPC()); |
| Process *p = tc->getProcessPtr(); |
| TlbEntry entry; |
| bool success = p->pTable->lookup(vaddr, entry); |
| if(!success) { |
| p->checkAndAllocNextPage(vaddr); |
| success = p->pTable->lookup(vaddr, entry); |
| } |
| if(!success) { |
| panic("Tried to access unmapped address %#x.\n", vaddr); |
| } else { |
| Addr alignedVaddr = p->pTable->pageAlign(vaddr); |
| DPRINTF(TLB, "Mapping %#x to %#x\n", alignedVaddr, |
| entry.pageStart()); |
| tc->getDTBPtr()->insert(alignedVaddr, entry); |
| } |
| } |
| #endif |
| } // namespace X86ISA |
| |