sam-t2/sam/cpus/vonk/ss/api/pli/src/SS_RegCompare.h

/*
* ========== Copyright Header Begin ==========================================
*
* OpenSPARC T2 Processor File: SS_RegCompare.h
* Copyright (c) 2006 Sun Microsystems, Inc.  All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES.
*
* The above named program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License version 2 as published by the Free Software Foundation.
*
* The above named program is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ========== Copyright Header End ============================================
*/

#ifndef __SS_RegCompare_h__
#define __SS_RegCompare_h__

#include "SS_Strand.h"
#include "SS_PliSocket.h"

class SS_RegCompare
{
  public:
    // make sure CTR_CMPR_MAX is larger than the registers in RegId
    // (of bin/SS_RegCompare.h).
    enum { CTR_G=0, CTR_W=1, CTR_F=2, CTR_INSTR=254, CTR_OPCODE=255, CTR_CMPR_MAX=256 };

    SS_RegCompare( SS_Strand* _strand, SS_PliSocket* _socket );

    void debug_output( FILE* _dbg_out )         { dbg_out = _dbg_out; }

    void initialise();
    void compare();
    void dump_regs();
    bool is_initialise() { return inited; }

    void cmpr_on() { for (int i=0; i<CTR_CMPR_MAX; i++) cmpr_list[i]=true; }
    void cmpr_on( int ii ) { assert(ii<CTR_CMPR_MAX); cmpr_list[ii]=true; }
    void cmpr_off() { for (int i=0; i<CTR_CMPR_MAX; i++) cmpr_list[i]=false; }
    void cmpr_off( int ii ) { assert(ii<CTR_CMPR_MAX); cmpr_list[ii]=false; }
    bool is_cmpr( int ii ) { return cmpr_list[ii]; }

  protected:
    uint64_t   grf[(1 + SS_Strand::MAX_GL) * 8];
    uint64_t   wrf[(1 + SS_Strand::MAX_WP) * 16];
    uint32_t   frf[64];

    FILE*      dbg_out;

    SS_PliSocket* socket;
    bool inited;

    // 'true' to one entry means its corresponding register will be included
    // in delta generation and replay comparison.
    bool cmpr_list[CTR_CMPR_MAX];
    // 'true' mean an instruction has generate one or more register delta
    bool new_delta;

  private:
    SS_Strand* strand;
};

#endif