Fix count calculation when counter limit set to 0 (Robert Reif)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3840 c046a42c-6fe2-441c-8c8c-71466251a162
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@ -97,9 +97,14 @@ static int slavio_timer_is_user(SLAVIO_TIMERState *s)
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// Convert from ptimer countdown units
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static void slavio_timer_get_out(SLAVIO_TIMERState *s)
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{
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uint64_t count;
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uint64_t count, limit;
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count = s->limit - PERIODS_TO_LIMIT(ptimer_get_count(s->timer));
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if (s->limit == 0) /* free-run processor or system counter */
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limit = TIMER_MAX_COUNT32;
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else
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limit = s->limit;
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count = limit - PERIODS_TO_LIMIT(ptimer_get_count(s->timer));
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DPRINTF("get_out: limit %" PRIx64 " count %x%08x\n", s->limit,
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s->counthigh, s->count);
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s->count = count & TIMER_COUNT_MASK32;
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