// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
 * QtMips - MIPS 32-bit Architecture Subset Simulator
 *
 * Implemented to support following courses:
 *
 *   B35APO - Computer Architectures
 *   https://cw.fel.cvut.cz/wiki/courses/b35apo
 *
 *   B4M35PAP - Advanced Computer Architectures
 *   https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
 *
 * Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
 * Copyright (c) 2019      Pavel Pisa <pisa@cmp.felk.cvut.cz>
 *
 * Faculty of Electrical Engineering (http://www.fel.cvut.cz)
 * Czech Technical University        (http://www.cvut.cz/)
 *
 * 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 *
 ******************************************************************************/

#ifndef MACHINEDEFS_H
#define MACHINEDEFS_H

#include <stdint.h>

namespace machine {

enum AccessControl {
    AC_NONE,
    AC_BYTE,
    AC_HALFWORD,
    AC_WORD,
    AC_BYTE_UNSIGNED,
    AC_HALFWORD_UNSIGNED,
    AC_CACHE_OP,
};

enum ExceptionCause {
    EXCAUSE_NONE,
    EXCAUSE_BREAK,
    EXCAUSE_SYSCALL,
};

enum AluOp : std::uint8_t {
    ALU_OP_NOP,
    ALU_OP_SLL,
    ALU_OP_SRL,
    ALU_OP_SRA,
    ALU_OP_SLLV,
    ALU_OP_SRLV,
    ALU_OP_SRAV,
    ALU_OP_MOVZ,
    ALU_OP_MOVN,
    ALU_OP_MFHI,
    ALU_OP_MTHI,
    ALU_OP_MFLO,
    ALU_OP_MTLO,
    ALU_OP_MULT,
    ALU_OP_MULTU,
    ALU_OP_DIV,
    ALU_OP_DIVU,
    ALU_OP_ADD,
    ALU_OP_ADDU,
    ALU_OP_SUB,
    ALU_OP_SUBU,
    ALU_OP_AND,
    ALU_OP_OR,
    ALU_OP_XOR,
    ALU_OP_NOR,
    ALU_OP_SLT,
    ALU_OP_SLTU,
    ALU_OP_LUI, // We don't care about exact index for this one
    ALU_OP_PASS_T, // Pass t argument without change for JAL
    ALU_OP_BREAK,
    ALU_OP_SYSCALL,
    ALU_OP_UNKNOWN,
    ALU_OP_LAST // First impossible operation (just to be sure that we don't overflow)
};

}

#endif // MACHINEDEFS_H