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