src/arch/arm/stacktrace.cc

   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
  42 using namespace std;
  43 namespace 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 }