NT_ARM_ZT
ret = ptrace(PTRACE_SETREGSET, child, NT_ARM_ZT, &iov);
#ifndef NT_ARM_ZT
ret = ptrace(PTRACE_GETREGSET, child, NT_ARM_ZT, &iov);
return ptrace(PTRACE_GETREGSET, pid, NT_ARM_ZT, &iov);
return ptrace(PTRACE_SETREGSET, pid, NT_ARM_ZT, &iov);
#ifndef NT_ARM_ZT