Fennix/Kernel/include/cpu/x86/hypervisor.hpp

/*
	This file is part of Fennix Kernel.

	Fennix Kernel 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 3 of
	the License, or (at your option) any later version.

	Fennix Kernel 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 Fennix Kernel. If not, see <https://www.gnu.org/licenses/>.
*/

#ifndef __FENNIX_KERNEL_CPU_x86_CPUID_HYPERVISOR_H__
#define __FENNIX_KERNEL_CPU_x86_CPUID_HYPERVISOR_H__

#include <types.h>

namespace CPU
{
    namespace x86
    {
        /** @brief EXPERIMENTAL IMPLEMENTATION */
        namespace Hypervisor
        {
            /** @brief Get CPU hypervisor information */
            struct CPUID0x40000000
            {
                union
                {
                    struct
                    {
                        /**
                         * @brief Maximum input value for hypervisor CPUID information.
                         * @note Can be from 0x40000001 to 0x400000FF
                         */
                        uint64_t MaximumInputValue : 32;
                    };
                    uint64_t raw;
                } EAX;

                union
                {
                    struct
                    {
                        /** @brief Hypervisor vendor signature */
                        char Hypervisor[4];
                    };
                    uint64_t raw;
                } EBX;

                union
                {
                    struct
                    {
                        /** @brief Hypervisor vendor signature */
                        char Hypervisor[4];
                    };
                    uint64_t raw;
                } ECX;

                union
                {
                    struct
                    {
                        /** @brief Hypervisor vendor signature */
                        char Hypervisor[4];
                    };
                    uint64_t raw;
                } EDX;
            };
        }
    }
}

#endif // !__FENNIX_KERNEL_CPU_x86_CPUID_HYPERVISOR_H__