*/
stack = task->stack;
- *stack++ = ((uint16_t) start);
- *stack++ = ((uint16_t) start) >> 8;
+ *stack++ = ((uint16_t) start); /* 0 */
+ *stack++ = ((uint16_t) start) >> 8; /* 1 */
/* and the stuff saved by ao_switch */
- *stack++ = 0; /* acc */
- *stack++ = 0x80; /* IE */
- *stack++ = 0; /* DPL */
- *stack++ = 0; /* DPH */
- *stack++ = 0; /* B */
- *stack++ = 0; /* R2 */
- *stack++ = 0; /* R3 */
- *stack++ = 0; /* R4 */
- *stack++ = 0; /* R5 */
- *stack++ = 0; /* R6 */
- *stack++ = 0; /* R7 */
- *stack++ = 0; /* R0 */
- *stack++ = 0; /* R1 */
- *stack++ = 0; /* PSW */
- *stack++ = 0; /* BP */
- task->stack_count = stack - task->stack;
+ *stack++ = 0; /* 2 acc */
+ *stack++ = 0x80; /* 3 IE */
+
+ /* 4 DPL
+ * 5 DPH
+ * 6 B
+ * 7 R2
+ * 8 R3
+ * 9 R4
+ * 10 R5
+ * 11 R6
+ * 12 R7
+ * 13 R0
+ * 14 R1
+ * 15 PSW
+ * 16 BP
+ */
+ for (t = 0; t < 13; t++)
+ *stack++ = 0;
+
+ task->stack_count = 17;
task->wchan = NULL;
}
/* Task switching function. This must not use any stack variables */
void
-ao_yield(void) _naked
+ao_yield(void) __naked
{
/* Save current context */
ao_cur_task->wchan = wchan;
}
ao_yield();
+ ao_cur_task->alarm = 0;
if (ao_cur_task->wchan) {
ao_cur_task->wchan = NULL;
- ao_cur_task->alarm = 0;
return 1;
}
- ao_cur_task->alarm = 0;
return 0;
}
ao_cur_task->alarm = 1;
}
-void
-ao_wake_task(__xdata struct ao_task *task)
-{
- task->wchan = NULL;
-}
-
void
ao_exit(void) __critical
{