- /* Restore the old stack */
- stack_len = ao_cur_task->stack_count;
- stack_ptr = (uint8_t __data *) AO_STACK_START;
- save_ptr = (uint8_t __xdata *) ao_cur_task->stack;
- while (stack_len--)
- *stack_ptr++ = *save_ptr++;
- SP = (uint8_t) (stack_ptr - 1);
+ {
+ uint8_t stack_len;
+ __data uint8_t *stack_ptr;
+ __xdata uint8_t *save_ptr;
+
+ /* Restore the old stack */
+ stack_len = ao_cur_task->stack_count;
+ SP = AO_STACK_START - 1 + stack_len;
+
+ stack_ptr = (uint8_t __data *) AO_STACK_START;
+ save_ptr = (uint8_t __xdata *) ao_cur_task->stack;
+ do
+ *stack_ptr++ = *save_ptr++;
+ while (--stack_len);
+ }