xref: /gem5/src/arch/power/insts/static_inst.hh

/*
 * Copyright (c) 2009 The University of Edinburgh
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met: 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 holders nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * 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
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * Authors: Timothy M. Jones
 */

#ifndef __ARCH_POWER_INSTS_STATICINST_HH__
#define __ARCH_POWER_INSTS_STATICINST_HH__

#include "base/trace.hh"
#include "cpu/static_inst.hh"

namespace PowerISA
{

class PowerStaticInst : public StaticInst
{
  protected:

    // Constructor
    PowerStaticInst(const char *mnem, MachInst _machInst, OpClass __opClass)
        : StaticInst(mnem, _machInst, __opClass)
    {
    }

    // Insert a condition value into a CR (condition register) field
    inline uint32_t
    insertCRField(uint32_t cr, uint32_t bf, uint32_t value) const
    {
        uint32_t bits = value << ((7 - bf) * 4);
        uint32_t mask = ~(0xf << ((7 - bf) * 4));
        return (cr & mask) | bits;
    }

    /// Print a register name for disassembly given the unique
    /// dependence tag number (FP or int).
    void
    printReg(std::ostream &os, RegId reg) const;

    std::string generateDisassembly(
            Addr pc, const SymbolTable *symtab) const override;

    void
    advancePC(PowerISA::PCState &pcState) const override
    {
        pcState.advance();
    }

    size_t
    asBytes(void *buf, size_t max_size) override
    {
        return simpleAsBytes(buf, max_size, machInst);
    }
};

} // namespace PowerISA

#endif //__ARCH_POWER_INSTS_STATICINST_HH__