Initial commit of OpenSPARC T2 architecture model.

[OpenSPARC-T2-SAM] / sam-t2 / sam / cpus / vonk / ss / lib / cpu / src / SS_PidContext.h

/*
* ========== Copyright Header Begin ==========================================
* 
* OpenSPARC T2 Processor File: SS_PidContext.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_PidContext_h__
#define __SS_PidContext_h__

#include "SS_Types.h"

class SS_PidContext
{
 private:
   enum 
   {
     PRI_CTX  = 1,
     SEC_CTX  = 0,
     
     PRI_CTX0 = 3,
     PRI_CTX1 = 2,
     SEC_CTX0 = 1,
     SEC_CTX1 = 0,

     PID      = 0
   };
   
 public:
   SS_PidContext() { pid_ctx.val = 0; }
   
   void init()                         { pid_ctx.val = 0; }

   void set_pri_ctx0( uint64_t ctx )   { pid_ctx.var[PRI_CTX0] = ctx; }
   void set_pri_ctx1( uint64_t ctx )   { pid_ctx.var[PRI_CTX1] = ctx; }
   
   void set_sec_ctx0( uint64_t ctx )   { pid_ctx.var[SEC_CTX0] = ctx; }
   void set_sec_ctx1( uint64_t ctx )   { pid_ctx.var[SEC_CTX1] = ctx; }
   
   void set_pid( uint_t pid )          { pid_ctx.var[PID] = pid; }
     
   uint64_t get()                      { return pid_ctx.val; }
   uint32_t get_pri()                  { return pid_ctx.ctx[PRI_CTX]; }
   uint32_t get_sec()                  { return pid_ctx.ctx[SEC_CTX]; }

 private:
   union Data
   {
     uint16_t var[4];
     uint32_t ctx[2];
     uint64_t val;
   };

   Data pid_ctx;
};

#endif