ptrace_getregs
extern int ptrace_getregs(struct task_struct *child,
ret = ptrace_getregs(child, datavp);
ret = ptrace_getregs(child,
extern int ptrace_getregs(long pid, unsigned long *regs_out);
ret = ptrace_getregs(child, datap);
err = ptrace_getregs(pid, ®s);
err = ptrace_getregs(pid, ®s);