/* This is the structure used for the rt_sigaction syscall on most archs,
 * but it can be overridden by a file with the same name in the top-level
 * arch dir for a given arch, if necessary. */
struct k_sigaction {
  void (*handler)(int);
  unsigned long flags;
  void (*restorer)(void);
  unsigned mask[2];
};

void __restore(), __restore_rt();