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  1. #include<stdio.h>
  2.  
  3. int main() {
  4.    unsigned int cpuid, eax, ebx, ecx, edx; 
  5.  
  6.    cpuid = 0x00000000;
  7.    __asm__ ("cpuid": "=a"(eax): "0"(cpuid));
  8.    __asm__ ("cpuid": "=b"(ebx): "0"(cpuid));
  9.    __asm__ ("cpuid": "=c"(ecx): "0"(cpuid));
  10.    __asm__ ("cpuid": "=d"(edx): "0"(cpuid));
  11.    printf("cpuid = 0x%x\n", cpuid);
  12.    printf("eax = 0x%x\n", eax);
  13.    printf("ebx = 0x%x\n", ebx);
  14.    printf("ecx = 0x%x\n", ecx);
  15.    printf("edx = 0x%x\n", edx);
  16.    printf("%c%c%c%c",ebx&0xff,(ebx>>8)&0xff,(ebx>>16)&0xff,(ebx>>24)&0xff);
  17.    printf("%c%c%c%c",edx&0xff,(edx>>8)&0xff,(edx>>16)&0xff,(edx>>24)&0xff);
  18.    printf("%c%c%c%c",ecx&0xff,(ecx>>8)&0xff,(ecx>>16)&0xff,(ecx>>24)&0xff);
  19.    printf("\n"); 
  20.  
  21.    cpuid = 0x80000001;
  22.    __asm__ ("cpuid": "=a"(eax): "0"(cpuid));
  23.    __asm__ ("cpuid": "=b"(ebx): "0"(cpuid));
  24.    __asm__ ("cpuid": "=c"(ecx): "0"(cpuid));
  25.    __asm__ ("cpuid": "=d"(edx): "0"(cpuid));
  26.    printf("cpuid = 0x%x\n", cpuid);
  27.    printf("eax = 0x%x\n", eax);
  28.    printf("ebx = 0x%x\n", ebx);
  29.    printf("ecx = 0x%x\n", ecx);
  30.    printf("edx = 0x%x\n", edx);
  31.  
  32.   cpuid = 0x80000002;
  33.    __asm__ ("cpuid": "=a"(eax): "0"(cpuid));
  34.    __asm__ ("cpuid": "=b"(ebx): "0"(cpuid));
  35.    __asm__ ("cpuid": "=c"(ecx): "0"(cpuid));
  36.    __asm__ ("cpuid": "=d"(edx): "0"(cpuid));
  37.    printf("%c%c%c%c",eax&0xff,(eax>>8)&0xff,(eax>>16)&0xff,(eax>>24)&0xff);
  38.    printf("%c%c%c%c",ebx&0xff,(ebx>>8)&0xff,(ebx>>16)&0xff,(ebx>>24)&0xff);
  39.    printf("%c%c%c%c",ecx&0xff,(ecx>>8)&0xff,(ecx>>16)&0xff,(ecx>>24)&0xff);
  40.    printf("%c%c%c%c",edx&0xff,(edx>>8)&0xff,(edx>>16)&0xff,(edx>>24)&0xff);
  41.   cpuid = 0x80000003;
  42.    __asm__ ("cpuid": "=a"(eax): "0"(cpuid));
  43.    __asm__ ("cpuid": "=b"(ebx): "0"(cpuid));
  44.    __asm__ ("cpuid": "=c"(ecx): "0"(cpuid));
  45.    __asm__ ("cpuid": "=d"(edx): "0"(cpuid));
  46.    printf("%c%c%c%c",eax&0xff,(eax>>8)&0xff,(eax>>16)&0xff,(eax>>24)&0xff);
  47.    printf("%c%c%c%c",ebx&0xff,(ebx>>8)&0xff,(ebx>>16)&0xff,(ebx>>24)&0xff);
  48.    printf("%c%c%c%c",ecx&0xff,(ecx>>8)&0xff,(ecx>>16)&0xff,(ecx>>24)&0xff);
  49.    printf("%c%c%c%c",edx&0xff,(edx>>8)&0xff,(edx>>16)&0xff,(edx>>24)&0xff);
  50.   cpuid = 0x80000004;
  51.    __asm__ ("cpuid": "=a"(eax): "0"(cpuid));
  52.    __asm__ ("cpuid": "=b"(ebx): "0"(cpuid));
  53.    __asm__ ("cpuid": "=c"(ecx): "0"(cpuid));
  54.    __asm__ ("cpuid": "=d"(edx): "0"(cpuid));
  55.    printf("%c%c%c%c",eax&0xff,(eax>>8)&0xff,(eax>>16)&0xff,(eax>>24)&0xff);
  56.    printf("%c%c%c%c",ebx&0xff,(ebx>>8)&0xff,(ebx>>16)&0xff,(ebx>>24)&0xff);
  57.    printf("%c%c%c%c",ecx&0xff,(ecx>>8)&0xff,(ecx>>16)&0xff,(ecx>>24)&0xff);
  58.    printf("%c%c%c%c",edx&0xff,(edx>>8)&0xff,(edx>>16)&0xff,(edx>>24)&0xff);
  59.  
  60.  
  61.    printf("\n"); 
  62.  
  63.    return 0;
  64. }
Success #stdin #stdout 0s 4532KB
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stdin
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Standard input is empty
stdout
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cpuid = 0x0
eax = 0xd
ebx = 0x756e6547
ecx = 0x0
edx = 0x0
Genu
cpuid = 0x80000001
eax = 0xd
ebx = 0x756e6547
ecx = 0x0
edx = 0x49656e69
eineI
nteleineI
https://ideone.com/h7Y5qf
$ gcc prog.c -Wall -Wextra -std=gnu11
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
secret

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