62 #include <machine/frame.h>
163 dump_regs(struct trapframe *frame)  in dump_regs()  argument
168 	for (i = 0; i < nitems(frame->tf_t); i++) {  in dump_regs()
170 		print_with_symbol(name, frame->tf_t[i]);  in dump_regs()
173 	for (i = 0; i < nitems(frame->tf_s); i++) {  in dump_regs()
175 		print_with_symbol(name, frame->tf_s[i]);  in dump_regs()
178 	for (i = 0; i < nitems(frame->tf_a); i++) {  in dump_regs()
180 		print_with_symbol(name, frame->tf_a[i]);  in dump_regs()
183 	print_with_symbol("ra", frame->tf_ra);  in dump_regs()
184 	print_with_symbol("sp", frame->tf_sp);  in dump_regs()
185 	print_with_symbol("gp", frame->tf_gp);  in dump_regs()
186 	print_with_symbol("tp", frame->tf_tp);  in dump_regs()
187 	print_with_symbol("sepc", frame->tf_sepc);  in dump_regs()
188 	printf("sstatus: 0x%016lx\n", frame->tf_sstatus);  in dump_regs()
189 	printf("stval  : 0x%016lx\n", frame->tf_stval);  in dump_regs()
204 page_fault_handler(struct trapframe *frame, int usermode)  in page_fault_handler()  argument
228 	stval = frame->tf_stval;  in page_fault_handler()
233 			    frame->tf_scause & SCAUSE_CODE);  in page_fault_handler()
242 		if ((frame->tf_sstatus & SSTATUS_SPIE) != 0)  in page_fault_handler()
256 	if (frame->tf_scause == SCAUSE_STORE_PAGE_FAULT) {  in page_fault_handler()
258 	} else if (frame->tf_scause == SCAUSE_INST_PAGE_FAULT) {  in page_fault_handler()
276 			    frame->tf_scause & SCAUSE_CODE);  in page_fault_handler()
279 				frame->tf_a[0] = error;  in page_fault_handler()
280 				frame->tf_sepc = pcb->pcb_onfault;  in page_fault_handler()
289 		userret(td, frame);  in page_fault_handler()
293 	dump_regs(frame);  in page_fault_handler()
297 		handled = kdb_trap(frame->tf_scause & SCAUSE_CODE, 0, frame);  in page_fault_handler()
303 	panic("Fatal page fault at %#lx: %#lx", frame->tf_sepc, stval);  in page_fault_handler()
307 do_trap_supervisor(struct trapframe *frame)  in do_trap_supervisor()  argument
318 	exception = frame->tf_scause & SCAUSE_CODE;  in do_trap_supervisor()
319 	if ((frame->tf_scause & SCAUSE_INTR) != 0) {  in do_trap_supervisor()
321 		intr_irq_handler(frame, INTR_ROOT_IRQ);  in do_trap_supervisor()
326 	if (dtrace_trap_func != NULL && (*dtrace_trap_func)(frame, exception))  in do_trap_supervisor()
331 	    exception, frame->tf_sepc, frame->tf_stval);  in do_trap_supervisor()
337 		dump_regs(frame);  in do_trap_supervisor()
339 		    frame->tf_sepc, frame->tf_stval);  in do_trap_supervisor()
344 		dump_regs(frame);  in do_trap_supervisor()
346 		    frame->tf_sepc, frame->tf_stval);  in do_trap_supervisor()
351 		page_fault_handler(frame, 0);  in do_trap_supervisor()
356 		    dtrace_invop_jump_addr(frame) == 0)  in do_trap_supervisor()
360 		kdb_trap(exception, 0, frame);  in do_trap_supervisor()
362 		dump_regs(frame);  in do_trap_supervisor()
367 		dump_regs(frame);  in do_trap_supervisor()
369 		    (frame->tf_stval & 0x3) != 0x3 ? 4 : 8,  in do_trap_supervisor()
370 		    frame->tf_stval, frame->tf_sepc);  in do_trap_supervisor()
373 		dump_regs(frame);  in do_trap_supervisor()
375 		    exception, frame->tf_stval);  in do_trap_supervisor()
380 do_trap_user(struct trapframe *frame)  in do_trap_user()  argument
389 	KASSERT(td->td_frame == frame,  in do_trap_user()
390 	    ("%s: td_frame %p != frame %p", __func__, td->td_frame, frame));  in do_trap_user()
399 	exception = frame->tf_scause & SCAUSE_CODE;  in do_trap_user()
400 	if ((frame->tf_scause & SCAUSE_INTR) != 0) {  in do_trap_user()
402 		intr_irq_handler(frame, INTR_ROOT_IRQ);  in do_trap_user()
408 	    exception, frame->tf_sepc, frame->tf_stval);  in do_trap_user()
414 		call_trapsignal(td, SIGBUS, BUS_ADRERR, (void *)frame->tf_sepc,  in do_trap_user()
416 		userret(td, frame);  in do_trap_user()
421 		call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_sepc,  in do_trap_user()
423 		userret(td, frame);  in do_trap_user()
428 		page_fault_handler(frame, 1);  in do_trap_user()
431 		frame->tf_sepc += 4;	/* Next instruction */  in do_trap_user()
441 			frame->tf_sstatus &= ~SSTATUS_FS_MASK;  in do_trap_user()
442 			frame->tf_sstatus |= SSTATUS_FS_CLEAN;  in do_trap_user()
446 		call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)frame->tf_sepc,  in do_trap_user()
448 		userret(td, frame);  in do_trap_user()
451 		call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_sepc,  in do_trap_user()
453 		userret(td, frame);  in do_trap_user()
456 		dump_regs(frame);  in do_trap_user()
458 		    exception, frame->tf_stval);  in do_trap_user()