* These are defined as per linux/ptrace.h, which see.
*/
#define arch_has_single_step() (1)
-struct task_struct;
-extern void user_enable_single_step(struct task_struct *);
-extern void user_disable_single_step(struct task_struct *);
extern void show_regs(struct pt_regs * regs);
#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0)