Feat: gura!!!

kernel/lib/syscall.c

@@ -49,10 +49,10 @@ int32_t sys_getpid(void)
 }
 
 size_t sys_uart_read(char buf[], size_t size)
-{ return uart_getb_sync((uint8_t *)buf, size); }
+{ return uart_getb((uint8_t *)buf, size); }
 
 size_t sys_uart_write(const char buf[], size_t size)
-{ return uart_putb_sync((const uint8_t *)buf, size); }
+{ return uart_putb((const uint8_t *)buf, size); }
 
 int32_t sys_exec(const char *name, char *const argv[])
 { return run_process_by_name((uint64_t)name); /* ignore argv for now */ }