#include <stdio.h>

int main() {

    unsigned int resultEax;
    unsigned int resultEbx;
    unsigned int resultEdx;

    __asm__("movl $0xa, %%eax" : ); // Moves 0xA in EAX: CPUID input param to get performance monitoring info
    __asm__("cpuid" : );
    __asm__("movl %%eax, %0" :"=r"(resultEax) : :);
    __asm__("movl %%ebx, %0" :"=r"(resultEbx) : :);
    __asm__("movl %%edx, %0" :"=r"(resultEdx) : :);

    printf("%-82s =  %2u\n", "Version ID of architectural performance monitoring" , resultEax & 255U); // Bits 07 to 00
    printf("%-82s =  %2u\n", "Number of general-purpose performance monitoring counter per logical processor", (resultEax >> 8) & 255); // Bits 15 to 08
    printf("%-82s =  %2u\n", "Bit width of general-purpose performance monitoring counter", (resultEax >> 16) & 255); // Bits 23 to 16
    printf("%-82s =  %2u\n", "Length of EBX bit vector to enumerate architectural performance monitoring events", (resultEax >> 24) & 255); // Bits 31 to 24
    printf("\n");

    printf("%-82s =  %2u\n", "Core cycle event (0 if available, 1 if not)", resultEbx & 1); // Bits 00
    printf("%-82s =  %2u\n", "Instruction retired event (0 if available, 1 if not)", (resultEbx >> 1) & 1); // Bits 01
    printf("%-82s =  %2u\n", "Reference cycles event (0 if available, 1 if not)", (resultEbx >> 2) & 1); // Bits 02
    printf("%-82s =  %2u\n", "Last level cache reference event (0 if available, 1 if not)", (resultEbx >> 3) & 1); // Bits 03
    printf("%-82s =  %2u\n", "Last level cache misses event (0 if available, 1 if not)", (resultEbx >> 4) & 1); // Bits 04
    printf("%-82s =  %2u\n", "Branch instruction retired event (0 if available, 1 if not)", (resultEbx >> 5) & 1); // Bits 05
    printf("%-82s =  %2u\n", "Branch mispredict retired event (0 if available, 1 if not)", (resultEbx >> 6) & 1); // Bits 06
    printf("\n");

    printf("%-82s =  %2u\n", "Number of fixed-function performance counters", (resultEdx >> 0) & 15); // Bits 04 to 00
    printf("%-82s =  %2u\n", "Bit width of fixed-function performance counters", (resultEdx >> 5) & 255); // Bits 12 to 05

    return 0;
}