dtrace_invop
invop = dtrace_invop(frame->tf_elr, frame, frame->tf_x[0]);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
int dtrace_invop(uintptr_t, struct trapframe *, void **);
invop = dtrace_invop(frame->tf_pc, frame, frame->tf_r0);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
switch (dtrace_invop(frame->srr0, frame, frame->fixreg[3])) {
int dtrace_invop(uintptr_t, struct trapframe *, uintptr_t);
invop = dtrace_invop(frame->tf_sepc, frame);
int dtrace_invop(uintptr_t, struct trapframe *);