Format
#include <builtin.h>_cpuidinfo *__cpuid(unsigned int type, _cpuidinfo *pInfo)
Language Level: None
__cpuid executes a CPUID instruction using type as the
input value. This builtin function will not work on a 386 or 486
processor. Refer to the Intel Programmer's Reference manual for
more information about the CPUID instruction.
Return Value
Returns the results of the CPUID instruction results in
a structure whose address is pInfo. The actual return
value is pInfo.
Example
This example prints out the results of the CPUID
instruction when the input value is zero.
#include <stdio.h> #include <builtin.h>
int main(void)
{
_cpuidinfo info;
(void)__cpuid(0, &info);
printf("CPUID with input value of 0 returns\n"
"eax:%.8x ebx:%.8x ecx:%.8x edx:%.8x\n",
info.eax, info.ebx, info.ecx, info.edx);
/******************************************************
The output should be similar to:
CPUID with input value of 0 returns
eax:00000001 ebx:756e6547 ecx:6c65746e edx:49656e69
******************************************************/
return 0; }