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Implement cpu_get_real_ticks for Alpha.

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Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2010-04-12 16:19:26 -07:00 • committed by Aurelien Jarno
parent 18f8e2c08b
commit 14a6063a91
1 changed files with 13 additions and 0 deletions
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13
qemu-timer.h
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@ -209,6 +209,19 @@ static inline int64_t cpu_get_real_ticks(void)
return (int64_t)(count * cyc_per_count);
}
#elif defined(__alpha__)
static inline int64_t cpu_get_real_ticks(void)
{
uint64_t cc;
uint32_t cur, ofs;
asm volatile("rpcc %0" : "=r"(cc));
cur = cc;
ofs = cc >> 32;
return cur - ofs;
}
#else
/* The host CPU doesn't have an easily accessible cycle counter.
Just return a monotonically increasing value. This will be