cpuid def

cpuid.h

union  __cpuid_t
{
	struct
	{
		unsigned __int32 cpu_info[4];
	};

	struct
	{
		unsigned __int32 eax;
		unsigned __int32 ebx;
		unsigned __int32 ecx;
		unsigned __int32 edx;
	} registers;

	struct
	{
		union
		{
			unsigned __int32 flags;

			struct
			{
				unsigned __int32 stepping_id : 4;
				unsigned __int32 model : 4;
				unsigned __int32 family_id : 4;
				unsigned __int32 processor_type : 2;
				unsigned __int32 reserved1 : 2;
				unsigned __int32 extended_model_id : 4;
				unsigned __int32 extended_family_id : 8;
				unsigned __int32 reserved2 : 4;
			};
		} version_information;

		union
		{
			unsigned __int32 flags;

			struct
			{
				unsigned __int32 brand_index : 8;
				unsigned __int32 clflush_line_size : 8;
				unsigned __int32 max_addressable_ids : 8;
				unsigned __int32 initial_apic_id : 8;
			} additional_information;
		};

		union
		{
			unsigned __int32 flags;

			struct
			{
				unsigned __int32 streaming_simd_extensions_3 : 1;
				unsigned __int32 pclmulqdq_instruction : 1;
				unsigned __int32 ds_area_64bit_layout : 1;
				unsigned __int32 monitor_mwait_instruction : 1;
				unsigned __int32 cpl_qualified_debug_store : 1;
				unsigned __int32 virtual_machine_extensions : 1;
				unsigned __int32 safer_mode_extensions : 1;
				unsigned __int32 enhanced_intel_speedstep_technology : 1;
				unsigned __int32 thermal_monitor_2 : 1;
				unsigned __int32 supplemental_streaming_simd_extensions_3 : 1;
				unsigned __int32 l1_context_id : 1;
				unsigned __int32 silicon_debug : 1;
				unsigned __int32 fma_extensions : 1;
				unsigned __int32 cmpxchg16b_instruction : 1;
				unsigned __int32 xtpr_update_control : 1;
				unsigned __int32 perfmon_and_debug_capability : 1;
				unsigned __int32 reserved1 : 1;
				unsigned __int32 process_context_identifiers : 1;
				unsigned __int32 direct_cache_access : 1;
				unsigned __int32 sse41_support : 1;
				unsigned __int32 sse42_support : 1;
				unsigned __int32 x2apic_support : 1;
				unsigned __int32 movbe_instruction : 1;
				unsigned __int32 popcnt_instruction : 1;
				unsigned __int32 tsc_deadline : 1;
				unsigned __int32 aesni_instruction_extensions : 1;
				unsigned __int32 xsave_xrstor_instruction : 1;
				unsigned __int32 osx_save : 1;
				unsigned __int32 avx_support : 1;
				unsigned __int32 half_precision_conversion_instructions : 1;
				unsigned __int32 rdrand_instruction : 1;
				unsigned __int32 reserved2 : 1;
			};
		} feature_ecx;

		union
		{
			unsigned __int32 flags;

			struct
			{
				unsigned __int32 floating_point_unit_on_chip : 1;
				unsigned __int32 virtual_8086_mode_enhancements : 1;
				unsigned __int32 debugging_extensions : 1;
				unsigned __int32 page_size_extension : 1;
				unsigned __int32 timestamp_counter : 1;
				unsigned __int32 rdmsr_wrmsr_instructions : 1;
				unsigned __int32 physical_address_extension : 1;
				unsigned __int32 machine_check_exception : 1;
				unsigned __int32 cmpxchg8b : 1;
				unsigned __int32 apic_on_chip : 1;
				unsigned __int32 reserved : 1;
				unsigned __int32 sysenter_sysexit_instructions : 1;
				unsigned __int32 memory_type_range_registers : 1;
				unsigned __int32 page_global_bit : 1;
				unsigned __int32 machine_check_architecture : 1;
				unsigned __int32 conditional_move_instructions : 1;
				unsigned __int32 page_attribute_table : 1;
				unsigned __int32 page_size_extension_36bit : 1;
				unsigned __int32 processor_serial_number : 1;
				unsigned __int32 clflush : 1;
				unsigned __int32 reserved2 : 1;
				unsigned __int32 debug_store : 1;
				unsigned __int32 thermal_control_msrs_for_acpi : 1;
				unsigned __int32 mmx_support : 1;
				unsigned __int32 fxsave_fxrstor_instructions : 1;
				unsigned __int32 sse_support : 1;
				unsigned __int32 sse2_support : 1;
				unsigned __int32 self_snoop : 1;
				unsigned __int32 hyper_threading_technology : 1;
				unsigned __int32 thermal_monitor : 1;
				unsigned __int32 reserved3 : 1;
				unsigned __int32 pending_break_enable : 1;
			};
		} feature_edx;
	};
};