#include <stdio.h>

int main() {
    char s[] = "jebac tego asemblera";
    char *y;

    asm volatile(
        ".intel_syntax noprefix;"
        "mov edx, %1;"
        "mov ebx, %1;"
        "xor ecx, ecx;"

        "loop:"
            "mov al, [ebx];"
            "cmp al, 0;"
            "je xd;"
            "inc ebx;"
            "inc ecx;"
            "jmp loop;"

        "xd:"
            "dec ebx;"
            "shr ecx, 1;"

        "reverseLoop:"
            "mov al, [edx];"
            "mov ah, [ebx];"
            "mov [ebx], al;"
            "mov [edx], ah;"
            "inc edx;"
            "dec ebx;"
            "dec ecx;"
            "jnz reverseLoop;"

        ".att_syntax prefix;"
        :"=r"(y)
        :"r"(s)
        :"ebx", "ecx", "edx"
);

    printf("%s\n", s);
}