cpu_i.h

浙江大学的悟空嵌入式系统模拟器

/**
 *  Copyright (c) 2005 Zhejiang University, P.R.China
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This 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 program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */ 

//=============================================================================
/**
 *  \file    Processor/PPC/CPU_i.h
 *
 *  \brief   inline functions for ppc cpu
 *
 *  \author  Chenfeng Zhou <[e-mail]>
 *
 *  Last update: <2005-02-09 23:23:43 by Cheney Chow>
 *
 *  $Id: CPU_i.h,v 1.1 2005/06/16 06:01:44 qilj Exp $
 */
//=============================================================================

inline void PPC_CPU::init_pc_npc ()
{
    pc_  = 0;
    npc_ = 0;
}

inline bool PPC_CPU::ucos_ee_handler() 
{
	if (current_instr_ == 0x7c1113a6) {
		cpu_state_.enable_ee_stack.push(cpu_state_.enable_ee);
		cpu_state_.enable_ee = false;
		return true;
	}
	else if (current_instr_ == 0x7c1013a6) {
		if (!cpu_state_.enable_ee_stack.empty()) {
			cpu_state_.enable_ee = cpu_state_.enable_ee_stack.top();
			cpu_state_.enable_ee_stack.pop();
		}
		else
			assert( 0 && "ee stack is empty!\n");
		return true;
	}
	else if (current_instr_ == 0x7c0f13a6) {
		cpu_state_.enable_ee = true;
		return true;
	}
	return false;
}

inline PPC_Register &PPC_CPU::get_register (int index)
{
    return this->reg_file_adaptor_[index];
}