; void rt_memcpy (void *pdest, ; ==> R0 ; void *psrc, ; ==> R1 ; rt_ubase_t size) ; ==> R2 rt_memcpy CMP R0, #0 BNE rt_memcpy_1 BX LR ; return if pdest == NULL rt_memcpy_1 CMP R1, #0 BNE rt_memcpy_2 BX LR ; return if psrc == NULL rt_memc...