nop
#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
#define nop() asm volatile ("nop\n":::"memory")
#define nop() asm volatile ("l.nop")
#define nop() __asm__ __volatile__ ("nop")
#define nop() asm volatile ("nop")
#define nop() asm volatile ("nop")