stacktrace.cc revision 8706 
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 "mem/fs_translating_port_proxy.hh"
41#include "sim/system.hh"
42
43using namespace std;
44namespace ArmISA
45{
46    ProcessInfo::ProcessInfo(ThreadContext *_tc)
47        : tc(_tc)
48    {
49        Addr addr = 0;
50
51        FSTranslatingPortProxy* vp;
52
53        vp = tc->getVirtProxy();
54
55        if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr))
56            panic("thread info not compiled into kernel\n");
57        thread_info_size = vp->readGtoH<int32_t>(addr);
58
59        if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr))
60            panic("thread info not compiled into kernel\n");
61        task_struct_size = vp->readGtoH<int32_t>(addr);
62
63        if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr))
64            panic("thread info not compiled into kernel\n");
65        task_off = vp->readGtoH<int32_t>(addr);
66
67        if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr))
68            panic("thread info not compiled into kernel\n");
69        pid_off = vp->readGtoH<int32_t>(addr);
70
71        if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr))
72            panic("thread info not compiled into kernel\n");
73        name_off = vp->readGtoH<int32_t>(addr);
74    }
75
76    Addr
77    ProcessInfo::task(Addr ksp) const
78    {
79        return 0;
80    }
81
82    int
83    ProcessInfo::pid(Addr ksp) const
84    {
85        return -1;
86    }
87
88    string
89    ProcessInfo::name(Addr ksp) const
90    {
91        return "Implement me";
92    }
93
94    StackTrace::StackTrace()
95        : tc(0), stack(64)
96    {
97    }
98
99    StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst)
100        : tc(0), stack(64)
101    {
102        trace(_tc, inst);
103    }
104
105    StackTrace::~StackTrace()
106    {
107    }
108
109    void
110    StackTrace::trace(ThreadContext *_tc, bool is_call)
111    {
112    }
113
114    bool
115    StackTrace::isEntry(Addr addr)
116    {
117        return false;
118    }
119
120    bool
121    StackTrace::decodeStack(MachInst inst, int &disp)
122    {
123        return false;
124    }
125
126    bool
127    StackTrace::decodeSave(MachInst inst, int &reg, int &disp)
128    {
129        return false;
130    }
131
132    /*
133     * Decode the function prologue for the function we're in, and note
134     * which registers are stored where, and how large the stack frame is.
135     */
136    bool
137    StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func,
138                               int &size, Addr &ra)
139    {
140        return false;
141    }
142
143#if TRACING_ON
144    void
145    StackTrace::dump()
146    {
147        DPRINTFN("------ Stack ------\n");
148
149        DPRINTFN(" Not implemented\n");
150    }
151#endif
152}
153