compiler question

[D. Peter Siddons]

I just switched to gcc3.3.5 (m68k Coldfire project). Code which used to 
compile with gcc3.2.3 now fails in the following fragment:

 unsigned char *gethwaddr(int a){
 
   register long __result __asm__ ("%d0") = 12;
   register long __a __asm__ ("%d1") = (long)a;
   __asm__ __volatile__ ("trap #2" \
                         : "=g" (__result) \
                         : "0" (__result), "d" (__a) \
                         : "%d0");
   return (unsigned char *)(__result);
}

The error given is:

error: asm-specifier for variable `__result' conflicts with asm clobber list

Anyone know what it means?

Pete.