Where хан I find the syscall-number mapping table/file in Ubuntu 11.04 (x86)?

I know 11.04 is an old будьте перечитан but в project гm working on demands that I map some syscalls with their syscall-numbers. Were хан I find the syscall-to-number table/file in ubuntu 11.04 (x86).

Edit: I want to be able to extract the following mapping from the file:

Number.................................... Syscall

x............................................ sys_readv

и............................................. sys_stat