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| author | Paolo Bonzini <pbonzini@redhat.com> | 2013-02-01 23:03:16 +0100 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2013-02-02 20:16:00 +0000 |
| commit | fbeadf50f2f965741def823036b086bbc2999b1f (patch) | |
| tree | 859da9be446ae21d999274d1972730a69e1de9ee /util | |
| parent | 7b2d9779818f4c0d4c31d3a0292bee1c4b633217 (diff) | |
| download | qemu-fbeadf50f2f965741def823036b086bbc2999b1f.tar.gz qemu-fbeadf50f2f965741def823036b086bbc2999b1f.tar.bz2 qemu-fbeadf50f2f965741def823036b086bbc2999b1f.zip | |
bitops: unify bitops_ffsl with the one in host-utils.h, call it bitops_ctzl
We had two copies of a ffs function for longs with subtly different
semantics and, for the one in bitops.h, a confusing name: the result
was off-by-one compared to the library function ffsl.
Unify the functions into one, and solve the name problem by calling
the 0-based functions "bitops_ctzl" and "bitops_ctol" respectively.
This also fixes the build on platforms with ffsl, including Mac OS X
and Windows.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Tested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'util')
| -rw-r--r-- | util/bitops.c | 4 | ||||
| -rw-r--r-- | util/hbitmap.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/util/bitops.c b/util/bitops.c index 4c3a836a01..7b853cf944 100644 --- a/util/bitops.c +++ b/util/bitops.c @@ -60,7 +60,7 @@ found_first: return result + size; /* Nope. */ } found_middle: - return result + bitops_ffsl(tmp); + return result + bitops_ctzl(tmp); } /* @@ -109,7 +109,7 @@ found_first: return result + size; /* Nope. */ } found_middle: - return result + ffz(tmp); + return result + bitops_ctol(tmp); } unsigned long find_last_bit(const unsigned long *addr, unsigned long size) diff --git a/util/hbitmap.c b/util/hbitmap.c index 2aa487db74..a0df5d3591 100644 --- a/util/hbitmap.c +++ b/util/hbitmap.c @@ -126,7 +126,7 @@ unsigned long hbitmap_iter_skip_words(HBitmapIter *hbi) * The index of this word's least significant set bit provides * the low-order bits. */ - pos = (pos << BITS_PER_LEVEL) + ffsl(cur) - 1; + pos = (pos << BITS_PER_LEVEL) + bitops_ctzl(cur); hbi->cur[i] = cur & (cur - 1); /* Set up next level for iteration. */ |