// Example from: https://stackoverflow.com/q/37502841/101258
int main()
{
    const char* test = "test\n";
    long dummyreg; /* dummyreg used to allow GCC to pick available register */

    __asm__ __volatile__ (
        "add $-128, %%rsp\n\t"   /* Skip the current redzone */
        "mov %%rsp, %[temp]\n\t" /* Copy RSP to available register */
        "and $-16, %%rsp\n\t"    /* Align stack to 16-byte boundary */
        "mov %[test], %%rdi\n\t" /* RDI is address of string */
        "xor %%eax, %%eax\n\t"   /* Variadic function set AL. This case 0 */
        "call printf\n\t"
        "mov %[test], %%rdi\n\t" /* RDI is address of string again */
        "xor %%eax, %%eax\n\t"   /* Variadic function set AL. This case 0 */
        "call printf\n\t"
        "mov %[temp], %%rsp\n\t" /* Restore RSP */
        "sub $-128, %%rsp\n\t"   /* Add 128 to RSP to restore to orig */
        :  [temp]"=&r"(dummyreg) /* Allow GCC to pick available output register. Modified
                                    before all inputs consumed so use & for early clobber*/
        :  [test]"r"(test),      /* Choose available register as input operand */
           "m"(test)             /* Dummy constraint to make sure test array
                                    is fully realized in memory before inline
                                    assembly is executed */
        : "rax", "rcx", "rdx", "rsi", "rdi", "r8", "r9", "r10", "r11",
          "xmm0","xmm1", "xmm2", "xmm3", "xmm4", "xmm5", "xmm6", "xmm7",
          "xmm8","xmm9", "xmm10", "xmm11", "xmm12", "xmm13", "xmm14", "xmm15",
          "mm0","mm1", "mm2", "mm3", "mm4", "mm5", "mm6", "mm6",
          "st", "st(1)", "st(2)", "st(3)", "st(4)", "st(5)", "st(6)", "st(7)"
        );

    return 0;
}