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>
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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; | ||||
|     } | ||||
| 
 | ||||
|  | ||||
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