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A user reported to me that he had errors compiling a userspace portion
of iptables because the u64 data type isn't exported to userspace. This
patch changes generic_hweight64 to use unsigned long longs instead of
u64s. It also changes the return type to unsigned int, to match the
other generic_hweight functions. Please apply.
Cheers!
-Matt
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filename="hweight64_fix.patch"
diff -Nurp --exclude-from=/home/mcd/.dontdiff linux-2.5.73-vanilla/include/linux/bitops.h linux-2.5.73-hweight64_fix/include/linux/bitops.h
--- linux-2.5.73-vanilla/include/linux/bitops.h Sun Jun 22 11:33:32 2003
+++ linux-2.5.73-hweight64_fix/include/linux/bitops.h Mon Jun 23 11:31:18 2003
@@ -108,19 +108,20 @@ static inline unsigned int generic_hweig
return (res & 0x0F) + ((res >> 4) & 0x0F);
}
-static inline unsigned long generic_hweight64(__u64 w)
+static inline unsigned int generic_hweight64(unsigned long long w)
{
#if BITS_PER_LONG < 64
return generic_hweight32((unsigned int)(w >> 32)) +
generic_hweight32((unsigned int)w);
#else
- u64 res;
+ unsigned long long res;
res = (w & 0x5555555555555555) + ((w >> 1) & 0x5555555555555555);
res = (res & 0x3333333333333333) + ((res >> 2) & 0x3333333333333333);
res = (res & 0x0F0F0F0F0F0F0F0F) + ((res >> 4) & 0x0F0F0F0F0F0F0F0F);
res = (res & 0x00FF00FF00FF00FF) + ((res >> 8) & 0x00FF00FF00FF00FF);
res = (res & 0x0000FFFF0000FFFF) + ((res >> 16) & 0x0000FFFF0000FFFF);
- return (res & 0x00000000FFFFFFFF) + ((res >> 32) & 0x00000000FFFFFFFF);
+ res = (res & 0x00000000FFFFFFFF) + ((res >> 32) & 0x00000000FFFFFFFF);
+ return (unsigned int)res;
#endif
}
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