/*
 * Copyright (c) 2007 The Hewlett-Packard Development Company
 * All rights reserved.
 *
 * Redistribution and use of this software in source and binary forms,
 * with or without modification, are permitted provided that the
 * following conditions are met:
 *
 * The software must be used only for Non-Commercial Use which means any
 * use which is NOT directed to receiving any direct monetary
 * compensation for, or commercial advantage from such use.  Illustrative
 * examples of non-commercial use are academic research, personal study,
 * teaching, education and corporate research & development.
 * Illustrative examples of commercial use are distributing products for
 * commercial advantage and providing services using the software for
 * commercial advantage.
 *
 * If you wish to use this software or functionality therein that may be
 * covered by patents for commercial use, please contact:
 *     Director of Intellectual Property Licensing
 *     Office of Strategy and Technology
 *     Hewlett-Packard Company
 *     1501 Page Mill Road
 *     Palo Alto, California  94304
 *
 * Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.  Redistributions
 * in binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or
 * other materials provided with the distribution.  Neither the name of
 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.  No right of
 * sublicense is granted herewith.  Derivatives of the software and
 * output created using the software may be prepared, but only for
 * Non-Commercial Uses.  Derivatives of the software may be shared with
 * others provided: (i) the others agree to abide by the list of
 * conditions herein which includes the Non-Commercial Use restrictions;
 * and (ii) such Derivatives of the software include the above copyright
 * notice to acknowledge the contribution from this software where
 * applicable, this list of conditions and the disclaimer below.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Gabe Black
 */

#include "arch/x86/insts/microop.hh"
#include "arch/x86/miscregs.hh"

namespace X86ISA
{

    bool X86MicroopBase::checkCondition(uint64_t flags, int condition) const
    {
        CCFlagBits ccflags = flags;
        switch(condition)
        {
          case ConditionTests::True:
            return true;
          case ConditionTests::ECF:
            return ccflags.ecf;
          case ConditionTests::EZF:
            return ccflags.ezf;
          case ConditionTests::SZnZF:
            return !(!ccflags.ezf & ccflags.zf);
          case ConditionTests::MSTRZ:
            panic("This condition is not implemented!");
          case ConditionTests::STRZ:
            panic("This condition is not implemented!");
          case ConditionTests::MSTRC:
            panic("This condition is not implemented!");
          case ConditionTests::STRZnEZF:
            return !ccflags.ezf & ccflags.zf;
                //And no interrupts or debug traps are waiting
          case ConditionTests::OF:
            return ccflags.of;
          case ConditionTests::CF:
            return ccflags.cf;
          case ConditionTests::ZF:
            return ccflags.zf;
          case ConditionTests::CvZF:
            return ccflags.cf | ccflags.zf;
          case ConditionTests::SF:
            return ccflags.sf;
          case ConditionTests::PF:
            return ccflags.pf;
          case ConditionTests::SxOF:
            return ccflags.sf ^ ccflags.of;
          case ConditionTests::SxOvZF:
            return (ccflags.sf ^ ccflags.of) | ccflags.zf;
          case ConditionTests::False:
            return false;
          case ConditionTests::NotECF:
            return !ccflags.ecf;
          case ConditionTests::NotEZF:
            return !ccflags.ezf;
          case ConditionTests::NotSZnZF:
            return !ccflags.ezf & ccflags.zf;
          case ConditionTests::NotMSTRZ:
            panic("This condition is not implemented!");
          case ConditionTests::NotSTRZ:
            panic("This condition is not implemented!");
          case ConditionTests::NotMSTRC:
            panic("This condition is not implemented!");
          case ConditionTests::STRnZnEZF:
            return !ccflags.ezf & !ccflags.zf;
                //And no interrupts or debug traps are waiting
          case ConditionTests::NotOF:
            return !ccflags.of;
          case ConditionTests::NotCF:
            return !ccflags.cf;
          case ConditionTests::NotZF:
            return !ccflags.zf;
          case ConditionTests::NotCvZF:
            return !(ccflags.cf | ccflags.zf);
          case ConditionTests::NotSF:
            return !ccflags.sf;
          case ConditionTests::NotPF:
            return !ccflags.pf;
          case ConditionTests::NotSxOF:
            return !(ccflags.sf ^ ccflags.of);
          case ConditionTests::NotSxOvZF:
            return !((ccflags.sf ^ ccflags.of) | ccflags.zf);
        }
        panic("Unknown condition: %d\n", condition);
        return true;
    }
}