-int do_sigaltstack32 (const compat_stack_t *uss32,
- compat_stack_t *uoss32, unsigned long sp);
-long restore_sigcontext32(struct compat_sigcontext *sc,
- struct compat_regfile *rf,
+int do_sigaltstack32 (const compat_stack_t __user *uss32,
+ compat_stack_t __user *uoss32, unsigned long sp);
+long restore_sigcontext32(struct compat_sigcontext __user *sc,
+ struct compat_regfile __user *rf,