faults.cc revision 8750 
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
41void 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
51void UnimpFault::invoke(ThreadContext * tc, StaticInstPtr inst)
52{
53    panic("Unimpfault: %s\n", panicStr.c_str());
54}
55
56void ReExec::invoke(ThreadContext *tc, StaticInstPtr inst)
57{
58    tc->pcState(tc->pcState());
59}
60
61void 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
74void GenericAlignmentFault::invoke(ThreadContext *tc, StaticInstPtr inst)
75{
76    panic("Alignment fault when accessing virtual address %#x\n", vaddr);
77}
78