Messages in this thread | | | Date | Wed, 12 May 2004 14:58:13 +0200 (MEST) | From | Szakacsits Szabolcs <> | Subject | Re: ffs() (was: [Linux-NTFS-Dev] SOLVED - Re: PROBLEM: compiling NTFS write support) |
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On Wed, 12 May 2004, Anton Altaparmakov wrote: > On Wed, 2004-05-12 at 12:56, andrea.fracasso@infoware-srl.com wrote: > > > On Wed, 2004-05-12 at 11:14, andrea.fracasso@infoware-srl.com wrote: > > >> Hi, I have found a problem compiling te source of kernel 2.6.6, if I > > >> enable NTFS write support when i run "make" i get this error: > > >> > > >> .... > > >> CC fs/ntfs/inode.o > > >> CC fs/ntfs/logfile.o > > >> {standard input}: Assembler messages: > > >> {standard input}:683: Error: suffix or operands invalid for `bsf' > > >> make[2]: *** [fs/ntfs/logfile.o] Error 1 > > >> make[1]: *** [fs/ntfs] Error 2 > > >> make: *** [fs] Error 2 > > >> > > >> my kernel version is: > > >> Linux version 2.6.5-AS1500 (root@ntb-gozzolox) (gcc version 3.3.2 > > >> 20031022 > > >> (Red Hat Linux 3.3.2-1)) #3 Thu Apr 15 10:13:11 CEST 2004 > > > > The binutils ver is: > > binutils-2.14.90.0.6-4 > > This happens because gcc (wrongly!) optimizes a variable into a constant > and then ffs() fails to assemble because the bsfl instruction is only > allowed with memory operands and not constants.
IMHO this should be worked around (fixed) in the inlined __asm__ ffs. Does it happen only on Opteron or on other platforms as well?
Szaka
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