src/sim/faults.cc

   1 /*
   2  * Copyright (c) 2003-2005 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Nathan Binkert
  29  *          Gabe Black
  30  */
  31
  32 #include "arch/isa_traits.hh"
  33 #include "base/misc.hh"
  34 #include "cpu/base.hh"
  35 #include "cpu/thread_context.hh"
  36 #include "debug/Fault.hh"
  37 #include "mem/page_table.hh"
  38 #include "sim/faults.hh"
  39 #include "sim/process.hh"
  40
  41 void FaultBase::invoke(ThreadContext * tc, StaticInstPtr inst)
  42 {
  43     if (FULL_SYSTEM) {
  44         DPRINTF(Fault, "Fault %s at PC: %s\n", name(), tc->pcState());
  45         assert(!tc->misspeculating());
  46     } else {
  47         panic("fault (%s) detected @ PC %s", name(), tc->pcState());
  48     }
  49 }
  50
  51 void UnimpFault::invoke(ThreadContext * tc, StaticInstPtr inst)
  52 {
  53     panic("Unimpfault: %s\n", panicStr.c_str());
  54 }
  55
  56 void ReExec::invoke(ThreadContext *tc, StaticInstPtr inst)
  57 {
  58     tc->pcState(tc->pcState());
  59 }
  60
  61 void GenericPageTableFault::invoke(ThreadContext *tc, StaticInstPtr inst)
  62 {
  63     bool handled = false;
  64 #if !FULL_SYSTEM
  65     Process *p = tc->getProcessPtr();
  66
  67     handled = p->fixupStackFault(vaddr);
  68 #endif
  69     if (!handled)
  70         panic("Page table fault when accessing virtual address %#x\n", vaddr);
  71
  72 }
  73
  74 void GenericAlignmentFault::invoke(ThreadContext *tc, StaticInstPtr inst)
  75 {
  76     panic("Alignment fault when accessing virtual address %#x\n", vaddr);
  77 }