The System Calls Dispatch Table We are going to learn a little about the 'sys_call_table' kernel symbol. We will use that to demonstrate messing with kernel symbols. A symbol named 'sys_call_table' is used to contain a table of pointers to all system calls supported by the kernel. This symbol is defined in '/usr/src/linux/arch/i386/kernel/entry.S' (for the Intel architecture). Each entry in this table is a pointer to some system call function. This is the mechanism that also supports the 'syscall' library function.