src/cpu/nativetrace.hh

   1 /*
   2  * Copyright (c) 2006-2009 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: Gabe Black
  29  */
  30
  31 #ifndef __CPU_NATIVETRACE_HH__
  32 #define __CPU_NATIVETRACE_HH__
  33
  34 #include <unistd.h>
  35
  36 #include <cerrno>
  37
  38 #include "base/socket.hh"
  39 #include "base/trace.hh"
  40 #include "base/types.hh"
  41 #include "cpu/exetrace.hh"
  42 #include "cpu/static_inst.hh"
  43
  44 class ThreadContext;
  45
  46 namespace Trace {
  47
  48 class NativeTrace;
  49
  50 class NativeTraceRecord : public ExeTracerRecord
  51 {
  52   protected:
  53     NativeTrace * parent;
  54
  55   public:
  56     NativeTraceRecord(NativeTrace * _parent,
  57                Tick _when, ThreadContext *_thread,
  58                const StaticInstPtr _staticInst, TheISA::PCState _pc,
  59                const StaticInstPtr _macroStaticInst = NULL)
  60         : ExeTracerRecord(_when, _thread, _staticInst, _pc, _macroStaticInst),
  61         parent(_parent)
  62     {
  63     }
  64
  65     void dump();
  66 };
  67
  68 class NativeTrace : public ExeTracer
  69 {
  70   protected:
  71     int fd;
  72
  73     ListenSocket native_listener;
  74
  75   public:
  76
  77     NativeTrace(const Params *p);
  78     virtual ~NativeTrace() {}
  79
  80     NativeTraceRecord *
  81     getInstRecord(Tick when, ThreadContext *tc,
  82             const StaticInstPtr staticInst, TheISA::PCState pc,
  83             const StaticInstPtr macroStaticInst = NULL)
  84     {
  85         return new NativeTraceRecord(this, when, tc,
  86                 staticInst, pc, macroStaticInst);
  87     }
  88
  89     template<class T>
  90     bool
  91     checkReg(const char * regName, T &val, T &realVal)
  92     {
  93         if (val != realVal)
  94         {
  95             DPRINTFN("Register %s should be %#x but is %#x.\n",
  96                     regName, realVal, val);
  97             return false;
  98         }
  99         return true;
 100     }
 101
 102     void
 103     read(void *ptr, size_t size)
 104     {
 105         size_t soFar = 0;
 106         while (soFar < size) {
 107             ssize_t res = ::read(fd, (uint8_t *)ptr + soFar, size - soFar);
 108             if (res < 0)
 109                 panic("Read call failed! %s\n", strerror(errno));
 110             else
 111                 soFar += res;
 112         }
 113     }
 114
 115     virtual void
 116     check(NativeTraceRecord *record) = 0;
 117 };
 118
 119 } // namespace Trace
 120
 121 #endif // __CPU_NATIVETRACE_HH__