This sounds a lot like gcc bug 2728:
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view&pr=2728&database=gcc
What version of gcc are you compiling with?
Mike Ricketts wrote:
>
> gcc -D__KERNEL__ -I/jfs/src/oakley/linux-2.5.5/include -nostdinc -Wall
> -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
> -fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2
> -march=i686 -DMODULE -D_JFS_4K -DKBUILD_BASENAME=jfs_imap -c -o
> jfs_imap.o jfs_imap.c
> jfs_imap.c: In function `diAlloc':
> /jfs/src/oakley/linux-2.5.5/include/asm/rwsem.h:152: inconsistent operand
> constraints in an `asm'
>
> The relevant bit of rwsem.h is:
>
> ...
> /*
> * unlock after reading
> */
> static inline void __up_read(struct rw_semaphore *sem)
> {
> __s32 tmp = -RWSEM_ACTIVE_READ_BIAS;
> __asm__ __volatile__(
> "# beginning __up_read\n\t"
> LOCK_PREFIX " xadd %%edx,(%%eax)\n\t" /* subtracts 1, returns
> the old\ value */
Thanks,
Dave
--
David Kleikamp
IBM Linux Technology Center
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