Change behavior of chopstx_poll to correctly update *USEC_P.

2018-12-07 18:01:39 +09:00
parent 39683dbc5f
commit 1400e677e3
3 changed files with 37 additions and 13 deletions
--- a/chopstx-cortex-m.c
+++ b/chopstx-cortex-m.c
@@ -293,8 +293,8 @@ chx_request_preemption (uint16_t prio)
 * 	AAPCS: ARM Architecture Procedure Call Standard
 *
 * Returns:
- *          1 on wakeup by others.
- *          0 on normal wakeup (timer expiration, lock aquirement).
+ *       >= 1 on wakeup by others, value means ticks remained for sleep.
+ *          0 on normal wakeup (timer expiration, lock acquirement).
 *         -1 on cancellation.
 */
 static uintptr_t __attribute__ ((naked, noinline))