Translate VS inline assembler to GCC inline assembler

I find this C code with inline assembler code:

ReadFromCMOS (unsigned char array [])
{
   unsigned char tvalue, index;

   for(index = 0; index < 128; index++)
   {
      _asm
      {
         cli             /* Disable interrupts*/
         mov al, index   /* Move index address*/
         /* since the 0x80 bit of al is not set, NMI is active */
         out 0x70,al     /* Copy address to CMOS register*/
         /* some kind of real delay here is probably best */
         in al,0x71      /* Fetch 1 byte to al*/
         sti             /* Enable interrupts*/
         mov tvalue,al
       }

       array[index] = tvalue;
   }
}

WriteTOCMOS(unsigned char array[])
{
   unsigned char index;

   for(index = 0; index < 128; index++)
   {
      unsigned char tvalue = array[index];
      _asm
      {
         cli             /* Clear interrupts*/
         mov al,index    /* move index address*/
         out 0x70,al     /* copy address to CMOS register*/
         /* some kind of real delay here is probably best */
         mov al,tvalue   /* move value to al*/
         out 0x71,al     /* write 1 byte to CMOS*/
         sti             /* Enable interrupts*/
      }
   }
}

I tried to translate to GNU inline assembler, but I failed, mostly because GNU inline asm is messy, uses the archaic AT&T syntax and is difficult to use.

Code that gives me error:

void read_cmos(unsigned char array[])
{
    unsigned char tvalue, index;
    for (index = 0; index < 128; ++index)
    {
        /* read from CMOS */
        asm ("cli; outb %1, $0x70; inb $0x71, %0; sti" : "=a"(tvalue) : "a"(index));
    }
    array[index] = tvalue;
}