riscv/riscv/trap.c

61 #include <machine/frame.h>
165 dump_regs(struct trapframe *frame)
170 	for (i = 0; i < nitems(frame->tf_t); i++) {
172 		print_with_symbol(name, frame->tf_t[i]);
175 	for (i = 0; i < nitems(frame->tf_s); i++) {
177 		print_with_symbol(name, frame->tf_s[i]);
180 	for (i = 0; i < nitems(frame->tf_a); i++) {
182 		print_with_symbol(name, frame->tf_a[i]);
185 	print_with_symbol("ra", frame->tf_ra);
186 	print_with_symbol("sp", frame->tf_sp);
187 	print_with_symbol("gp", frame->tf_gp);
188 	print_with_symbol("tp", frame->tf_tp);
189 	print_with_symbol("sepc", frame->tf_sepc);
190 	printf("sstatus: 0x%016lx\n", frame->tf_sstatus);
191 	printf("stval  : 0x%016lx\n", frame->tf_stval);
206 page_fault_handler(struct trapframe *frame, int usermode)
230 	stval = frame->tf_stval;
240 			    frame->tf_scause & SCAUSE_CODE);
262 	if (frame->tf_scause == SCAUSE_STORE_PAGE_FAULT) {
264 	} else if (frame->tf_scause == SCAUSE_INST_PAGE_FAULT) {
277 			    frame->tf_scause & SCAUSE_CODE);
280 				frame->tf_a[0] = error;
281 				frame->tf_sepc = pcb->pcb_onfault;
290 		userret(td, frame);
294 	dump_regs(frame);
298 		handled = kdb_trap(frame->tf_scause & SCAUSE_CODE, 0, frame);
304 	panic("Fatal page fault at %#lx: %#lx", frame->tf_sepc, stval);
308 do_trap_supervisor(struct trapframe *frame)
319 	exception = frame->tf_scause & SCAUSE_CODE;
320 	if ((frame->tf_scause & SCAUSE_INTR) != 0) {
322 		intr_irq_handler(frame);
327 	if (dtrace_trap_func != NULL && (*dtrace_trap_func)(frame, exception))
332 	    exception, frame->tf_sepc, frame->tf_stval);
338 		dump_regs(frame);
340 		    frame->tf_sepc, frame->tf_stval);
345 		dump_regs(frame);
347 		    frame->tf_sepc, frame->tf_stval);
352 		page_fault_handler(frame, 0);
357 		    dtrace_invop_jump_addr(frame) == 0)
361 		kdb_trap(exception, 0, frame);
363 		dump_regs(frame);
368 		dump_regs(frame);
370 		    (frame->tf_stval & 0x3) != 0x3 ? 4 : 8,
371 		    frame->tf_stval, frame->tf_sepc);
374 		dump_regs(frame);
376 		    exception, frame->tf_stval);
381 do_trap_user(struct trapframe *frame)
390 	KASSERT(td->td_frame == frame,
391 	    ("%s: td_frame %p != frame %p", __func__, td->td_frame, frame));
400 	exception = frame->tf_scause & SCAUSE_CODE;
401 	if ((frame->tf_scause & SCAUSE_INTR) != 0) {
403 		intr_irq_handler(frame);
409 	    exception, frame->tf_sepc, frame->tf_stval);
415 		call_trapsignal(td, SIGBUS, BUS_ADRERR, (void *)frame->tf_sepc,
417 		userret(td, frame);
422 		call_trapsignal(td, SIGBUS, BUS_ADRALN, (void *)frame->tf_sepc,
424 		userret(td, frame);
429 		page_fault_handler(frame, 1);
432 		frame->tf_sepc += 4;	/* Next instruction */
442 			frame->tf_sstatus &= ~SSTATUS_FS_MASK;
443 			frame->tf_sstatus |= SSTATUS_FS_CLEAN;
447 		call_trapsignal(td, SIGILL, ILL_ILLTRP, (void *)frame->tf_sepc,
449 		userret(td, frame);
452 		call_trapsignal(td, SIGTRAP, TRAP_BRKPT, (void *)frame->tf_sepc,
454 		userret(td, frame);
457 		dump_regs(frame);
459 		    exception, frame->tf_stval);