int fd, long pgoff);
struct pt_regs;
struct sigaction;
-long sys_execve(const char __user *filename, char __user * __user *argv,
- char __user * __user *envp, struct pt_regs *regs);
asmlinkage long sys_ia64_pipe(void);
asmlinkage long sys_rt_sigaction(int sig,
const struct sigaction __user *act,