Function do_el1h_sync

freebsd/arm64/arm64/trap.c:360–442

}

void
do_el1h_sync(struct thread *td, struct trapframe *frame)
{
	uint32_t exception;
	uint64_t esr, far;
	int dfsc;

	/* Read the esr register to get the exception details */
	esr = frame->tf_esr;
	exception = ESR_ELx_EXCEPTION(esr);

#ifdef KDTRACE_HOOKS
	if (dtrace_trap_func != NULL && (*dtrace_trap_func)(frame, exception))
		return;
#endif

	CTR4(KTR_TRAP,
	    "do_el1_sync: curthread: %p, esr %lx, elr: %lx, frame: %p", td,
	    esr, frame->tf_elr, frame);

	switch (exception) {
	case EXCP_FP_SIMD:
	case EXCP_TRAP_FP:
#ifdef VFP
		if ((td->td_pcb->pcb_fpflags & PCB_FP_KERN) != 0) {
			vfp_restore_state();
		} else
#endif
		{
			print_registers(frame);
			printf(" esr:         %.8lx\n", esr);
			panic("VFP exception in the kernel");
		}
		break;
	case EXCP_INSN_ABORT:
	case EXCP_DATA_ABORT:
		far = READ_SPECIALREG(far_el1);
		dfsc = esr & ISS_DATA_DFSC_MASK;
		if (dfsc < nitems(abort_handlers) &&
		    abort_handlers[dfsc] != NULL) {
			abort_handlers[dfsc](td, frame, esr, far, 0);
		} else {
			print_registers(frame);
			printf(" far: %16lx\n", far);
			printf(" esr:         %.8lx\n", esr);
			panic("Unhandled EL1 %s abort: %x",
			    exception == EXCP_INSN_ABORT ? "instruction" :
			    "data", dfsc);
		}
		break;
	case EXCP_BRK:
#ifdef KDTRACE_HOOKS
		if ((esr & ESR_ELx_ISS_MASK) == 0x40d && \
		    dtrace_invop_jump_addr != 0) {
			dtrace_invop_jump_addr(frame);
			break;
		}
#endif