Subversion Repositories riscv_vhdl

/**

 * @file

 * @copyright  Copyright 2017 GNSS Sensor Ltd. All right reserved.

 * @author     Sergey Khabarov - sergeykhbr@gmail.com

 * @brief      Instruction object declaration.

 */

#ifndef __DEBUGGER_CPU_RISCV_INSTRUCTIONS_H__

#define __DEBUGGER_CPU_RISCV_INSTRUCTIONS_H__

#include <inttypes.h>

#include "generic/cpu_generic.h"

namespace debugger {

class CpuRiver_Functional;

class RiscvInstruction : public GenericInstruction {

public:

    RiscvInstruction(CpuRiver_Functional *icpu, const char *name,

                    const char *bits);

    // IInstruction interface:

    virtual const char *name() { return name_.to_string(); }

    virtual bool parse(uint32_t *payload) {

        return ((payload[0] & mask_) == opcode_);

    }

    virtual uint32_t hash() {

        return (opcode_ >> 2) & 0x1F;

    }

    uint16_t hash16() {

        uint16_t t1 = static_cast<uint16_t>(opcode_) & 0x3;

        return 0x20 | ((static_cast<uint16_t>(opcode_) >> 13) << 2) | t1;

    }

protected:

    AttributeType name_;

    CpuRiver_Functional *icpu_;

    uint32_t mask_;

    uint32_t opcode_;

    uint64_t *R;

};

class RiscvInstruction16 : public RiscvInstruction {

public:

    RiscvInstruction16(CpuRiver_Functional *icpu, const char *name,

                    const char *bits) : RiscvInstruction(icpu, name, bits) {}

    // IInstruction interface:

    virtual uint32_t hash() {

        uint16_t t1 = static_cast<uint16_t>(opcode_) & 0x3;

        return 0x20 | ((static_cast<uint16_t>(opcode_) >> 13) << 2) | t1;

    }

};

}  // namespace debugger

#endif  // __DEBUGGER_CPU_RISCV_INSTRUCTIONS_H__