extern void syscall_segv(int sig);
extern int current_pid(void);
extern unsigned long alloc_stack(int order, int atomic);
-extern int do_signal(int error);
+extern int do_signal(void);
extern int is_stack_fault(unsigned long sp);
extern unsigned long segv(unsigned long address, unsigned long ip,
int is_write, int is_user, void *sc);
extern int segv_syscall(void);
extern void kern_finish_exec(void *task, int new_pid, unsigned long stack);
extern int page_size(void);
-extern int page_mask(void);
+extern unsigned long page_mask(void);
extern int need_finish_fork(void);
extern void free_stack(unsigned long stack, int order);
extern void add_input_request(int op, void (*proc)(int), void *arg);
extern void free_irq(unsigned int, void *);
extern int um_in_interrupt(void);
extern int cpu(void);
-extern unsigned long long time_stamp(void);
#endif