faults.cc revision 12512 
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 "sim/faults.hh"
33
34#include "arch/isa_traits.hh"
35#include "base/logging.hh"
36#include "cpu/base.hh"
37#include "cpu/thread_context.hh"
38#include "debug/Fault.hh"
39#include "mem/page_table.hh"
40#include "sim/full_system.hh"
41#include "sim/process.hh"
42
43void FaultBase::invoke(ThreadContext * tc, const StaticInstPtr &inst)
44{
45    if (FullSystem) {
46        DPRINTF(Fault, "Fault %s at PC: %s\n", name(), tc->pcState());
47    } else {
48        panic("fault (%s) detected @ PC %s", name(), tc->pcState());
49    }
50}
51
52void UnimpFault::invoke(ThreadContext * tc, const StaticInstPtr &inst)
53{
54    panic("Unimpfault: %s\n", panicStr.c_str());
55}
56
57void ReExec::invoke(ThreadContext *tc, const StaticInstPtr &inst)
58{
59    tc->pcState(tc->pcState());
60}
61
62void SyscallRetryFault::invoke(ThreadContext *tc, const StaticInstPtr &inst)
63{
64    tc->pcState(tc->pcState());
65}
66
67void GenericPageTableFault::invoke(ThreadContext *tc, const StaticInstPtr &inst)
68{
69    bool handled = false;
70    if (!FullSystem) {
71        Process *p = tc->getProcessPtr();
72        handled = p->fixupStackFault(vaddr);
73    }
74    if (!handled)
75        panic("Page table fault when accessing virtual address %#x\n", vaddr);
76
77}
78
79void GenericAlignmentFault::invoke(ThreadContext *tc, const StaticInstPtr &inst)
80{
81    panic("Alignment fault when accessing virtual address %#x\n", vaddr);
82}
83