Listsyscalls is a tool for listing contents of the syscall table on a running Solaris kernel. Has various uses, including being able to check if a syscall function has been patched or redirected.
You can download it from the following link: https://packetstormsecurity.com/files/download/23686/listsyscalls-1.0.tar.gz
Source: https://packetstormsecurity.com/files/23686/listsyscalls-1.0.tar.gz.html