src/arch/arm/nativetrace.hh

   1 /*
   2  * Copyright (c) 2006 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 __ARCH_ARM_NATIVETRACE_HH__
  32 #define __ARCH_ARM_NATIVETRACE_HH__
  33
  34 #include "base/types.hh"
  35 #include "cpu/nativetrace.hh"
  36 #include "params/ArmNativeTrace.hh"
  37
  38 namespace Trace {
  39
  40 class ArmNativeTrace : public NativeTrace
  41 {
  42   public:
  43     enum StateID {
  44         STATE_R0,
  45         STATE_R1,
  46         STATE_R2,
  47         STATE_R3,
  48         STATE_R4,
  49         STATE_R5,
  50         STATE_R6,
  51         STATE_R7,
  52         STATE_R8,
  53         STATE_R9,
  54         STATE_R10,
  55         STATE_R11,
  56         STATE_FP = STATE_R11,
  57         STATE_R12,
  58         STATE_R13,
  59         STATE_SP = STATE_R13,
  60         STATE_R14,
  61         STATE_LR = STATE_R14,
  62         STATE_R15,
  63         STATE_PC = STATE_R15,
  64         STATE_CPSR,
  65         STATE_NUMVALS
  66     };
  67
  68   protected:
  69     struct ThreadState {
  70         bool changed[STATE_NUMVALS];
  71         uint32_t state[2][STATE_NUMVALS];
  72         uint32_t *newState;
  73         uint32_t *oldState;
  74         int current;
  75         void update(NativeTrace *parent);
  76         void update(ThreadContext *tc);
  77
  78         ThreadState()
  79         {
  80             for (int i = 0; i < STATE_NUMVALS; i++) {
  81                 changed[i] = false;
  82                 state[0][i] = state[1][i] = 0;
  83                 current = 0;
  84                 newState = state[0];
  85                 oldState = state[1];
  86             }
  87         }
  88     };
  89
  90     ThreadState nState, mState;
  91
  92     bool stopOnPCError;
  93
  94   public:
  95     typedef ArmNativeTraceParams Params;
  96
  97     const Params *
  98     params() const
  99     {
 100         return dynamic_cast<const Params *>(_params);
 101     }
 102
 103     ArmNativeTrace(const Params *p) :
 104         NativeTrace(p), stopOnPCError(p->stop_on_pc_error)
 105     {}
 106
 107     void check(NativeTraceRecord *record);
 108 };
 109
 110 } // namespace Trace
 111
 112 #endif // __ARCH_ARM_NATIVETRACE_HH__