128 bit integer for GCC sync operations

Hello,

I would like to use __sync_bool_compare_and_swap_16 (for pointer +
tag) on nocona architecture with GCC. What datatype do I have to use
for the 128 bit integer? I tried long long long, __m128i and
struct{uint8_t data[16];} and all three things don't work.

I'm using GCC 4.2.1.

Thanks
Roland
-- 
comp.lang.c.moderated - moderation address: clcm@[EMAIL PROTECTED]
 -- you must
have an appropriate newsgroups line in your header for your mail to be
seen,
or the newsgroup name in square brackets in the subject line.  Sorry.