util/statetrace/arch/tracechild_sparc.hh

   1 /*
   2  * Copyright (c) 2006-2007 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 TRACECHILD_SPARC_HH
  32 #define TRACECHILD_SPARC_HH
  33
  34 #include <asm-sparc64/reg.h>
  35 #include <assert.h>
  36 #include <ostream>
  37 #include <stdint.h>
  38 #include <string>
  39 #include <sys/ptrace.h>
  40 #include <sys/types.h>
  41
  42 #include "tracechild.hh"
  43
  44 struct regs;
  45
  46 class SparcTraceChild : public TraceChild
  47 {
  48 public:
  49         enum RegNum
  50         {
  51                 //Global registers
  52                 G0, G1, G2, G3, G4, G5, G6, G7,
  53                 //Output registers
  54                 O0, O1, O2, O3, O4, O5, O6, O7,
  55                 //Local registers
  56                 L0, L1, L2, L3, L4, L5, L6, L7,
  57                 //Input registers
  58                 I0, I1, I2, I3, I4, I5, I6, I7,
  59                 //Floating point
  60                 F0, F2, F4, F6, F8, F10, F12, F14,
  61                 F16, F18, F20, F22, F24, F26, F28, F30,
  62                 F32, F34, F36, F38, F40, F42, F44, F46,
  63                 F48, F50, F52, F54, F56, F58, F60, F62,
  64                 //Miscelaneous
  65                 FSR, FPRS, PC, NPC, Y, CWP, PSTATE, ASI, CCR,
  66                 numregs
  67         };
  68 private:
  69         char printBuffer[256];
  70         static std::string regNames[numregs];
  71         regs theregs;
  72         regs oldregs;
  73         fpu thefpregs;
  74         fpu oldfpregs;
  75         int64_t locals[8];
  76         int64_t oldLocals[8];
  77         int64_t inputs[8];
  78         int64_t oldInputs[8];
  79         bool regDiffSinceUpdate[numregs];
  80
  81         //This calculates where the pc might go after the current instruction.
  82         //while this equals npc for most instructions, it doesn't for all of
  83         //them. The return value is the number of actual potential targets.
  84         int getTargets(uint32_t inst, uint64_t pc, uint64_t npc,
  85                 uint64_t &target1, uint64_t &target2);
  86
  87 protected:
  88         bool update(int pid);
  89
  90 public:
  91         SparcTraceChild();
  92
  93         int getNumRegs()
  94         {
  95                 return numregs;
  96         }
  97
  98         bool diffSinceUpdate(int num)
  99         {
 100                 assert(num < numregs && num >= 0);
 101                 return regDiffSinceUpdate[num];
 102         }
 103
 104         std::string getRegName(int num)
 105         {
 106                 assert(num < numregs && num >= 0);
 107                 return regNames[num];
 108         }
 109
 110         int64_t getRegVal(int num);
 111
 112         int64_t getOldRegVal(int num);
 113
 114         bool step();
 115
 116         uint64_t getPC()
 117         {
 118                 return getRegVal(PC);
 119         }
 120
 121         uint64_t getSP()
 122         {
 123                 return getRegVal(O6);
 124         }
 125
 126         char * printReg(int num);
 127
 128         std::ostream & outputStartState(std::ostream & os);
 129 };
 130
 131 #endif