diff options
| -rw-r--r-- | hw/slavio_timer.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/hw/slavio_timer.c b/hw/slavio_timer.c index f98647f98f..e854358175 100644 --- a/hw/slavio_timer.c +++ b/hw/slavio_timer.c @@ -97,9 +97,14 @@ static int slavio_timer_is_user(SLAVIO_TIMERState *s) // Convert from ptimer countdown units static void slavio_timer_get_out(SLAVIO_TIMERState *s) { - uint64_t count; + uint64_t count, limit; - count = s->limit - PERIODS_TO_LIMIT(ptimer_get_count(s->timer)); + if (s->limit == 0) /* free-run processor or system counter */ + limit = TIMER_MAX_COUNT32; + else + limit = s->limit; + + count = limit - PERIODS_TO_LIMIT(ptimer_get_count(s->timer)); DPRINTF("get_out: limit %" PRIx64 " count %x%08x\n", s->limit, s->counthigh, s->count); s->count = count & TIMER_COUNT_MASK32; |