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memory: Use non-bitops ctzl 

A memory size of zero is invalid, and so that edge condition
does not occur.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Richard Henderson 2013-02-13 17:47:38 -08:00 committed by Blue Swirl
parent 265ce4a5ca
commit 5bbf90be97
1 changed files with 2 additions and 2 deletions
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4
memory.c
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@ -855,7 +855,7 @@ static uint64_t memory_region_dispatch_read1(MemoryRegion *mr,
}
if (!mr->ops->read) {
return mr->ops->old_mmio.read[bitops_ctzl(size)](mr->opaque, addr);
return mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
}
/* FIXME: support unaligned access */
@ -908,7 +908,7 @@ static void memory_region_dispatch_write(MemoryRegion *mr,
adjust_endianness(mr, &data, size);
if (!mr->ops->write) {
mr->ops->old_mmio.write[bitops_ctzl(size)](mr->opaque, addr, data);
mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, data);
return;
}