stacktrace.cc revision 6757 
1/*
2 * Copyright (c) 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 */
30
31#include <string>
32
33#include "arch/arm/isa_traits.hh"
34#include "arch/arm/stacktrace.hh"
35#include "arch/arm/vtophys.hh"
36#include "base/bitfield.hh"
37#include "base/trace.hh"
38#include "cpu/base.hh"
39#include "cpu/thread_context.hh"
40#include "sim/system.hh"
41
42using namespace std;
43namespace ArmISA
44{
45    ProcessInfo::ProcessInfo(ThreadContext *_tc)
46        : tc(_tc)
47    {
48        Addr addr = 0;
49
50        VirtualPort *vp;
51
52        vp = tc->getVirtPort();
53
54        if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
55            panic("thread info not compiled into kernel\n");
56        thread_info_size = vp->readGtoH<int32_t>(addr);
57
58        if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
59            panic("thread info not compiled into kernel\n");
60        task_struct_size = vp->readGtoH<int32_t>(addr);
61
62        if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
63            panic("thread info not compiled into kernel\n");
64        task_off = vp->readGtoH<int32_t>(addr);
65
66        if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
67            panic("thread info not compiled into kernel\n");
68        pid_off = vp->readGtoH<int32_t>(addr);
69
70        if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
71            panic("thread info not compiled into kernel\n");
72        name_off = vp->readGtoH<int32_t>(addr);
73    }
74
75    Addr
76    ProcessInfo::task(Addr ksp) const
77    {
78        return 0;
79    }
80
81    int
82    ProcessInfo::pid(Addr ksp) const
83    {
84        return -1;
85    }
86
87    string
88    ProcessInfo::name(Addr ksp) const
89    {
90        return "Implement me";
91    }
92
93    StackTrace::StackTrace()
94        : tc(0), stack(64)
95    {
96    }
97
98    StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
99        : tc(0), stack(64)
100    {
101        trace(_tc, inst);
102    }
103
104    StackTrace::~StackTrace()
105    {
106    }
107
108    void
109    StackTrace::trace(ThreadContext *_tc, bool is_call)
110    {
111    }
112
113    bool
114    StackTrace::isEntry(Addr addr)
115    {
116        return false;
117    }
118
119    bool
120    StackTrace::decodeStack(MachInst inst, int &disp)
121    {
122        return false;
123    }
124
125    bool
126    StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
127    {
128        return false;
129    }
130
131    /*
132     * Decode the function prologue for the function we're in, and note
133     * which registers are stored where, and how large the stack frame is.
134     */
135    bool
136    StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
137                               int &size, Addr &ra)
138    {
139        return false;
140    }
141
142#if TRACING_ON
143    void
144    StackTrace::dump()
145    {
146        DPRINTFN("------ Stack ------\n");
147
148        DPRINTFN(" Not implemented\n");
149    }
150#endif
151}
152