#include <stdio.h>

#if __i386__
int detect(char c)
{
	char result = 0;
	asm("   call 1f         \n\t"
	    "1: pop %%edi       \n\t"
	    "   sub $9,%%edi    \n\t"
		"   mov $0x20,%%ecx \n\t"
	    "   repne scasb     \n\t"
	    "   sete %0         \n\t"
	    :"=a"(result): "0"(c));
	return result;
}
#elif __x86_64__
int detect(char c)
{
	char result = 0;
	asm("mov $0x20,%%ecx         \n\t"
	    "lea detect(%%rip),%%edi \n\t"
	    "repne scasb             \n\t"
	    "sete %0                 \n\t"
	    :"=a"(result): "0"(c));
	return result;
}
#else
	#error unexpected arch!!!
#endif

int main()
{
	const int N = 4;

	const char INT0 = 0xce,
    	       INT1 = 0xf1,
			   INT3 = 0xcc,
			   INTn = 0xcd; // 0xcd + 0x03

	const char a[] = {INT0, INT1, INT3, INTn};

	for (int i = 0; i < N; ++i)
		if (detect(a[i]))
			printf("%hhx detected!!!\n", a[i]);
		else
			printf("%hhx not detected!!!\n", a[i]);
}