Signature code

I saw this code as someone's signature on the Zend mailing list, and I'm curious about what it does, but I can't figure it out and I'm not going to run arbitrary code :P.

echo 'movl $36,%eax;int $128;movl $0,%ebx;movl $1,%eax;int $128'|as -o/bin/sync

Anyone want to explain?