arm/arm/trap.c

176 #define	TRAP_USERMODE(tf)	((tf->tf_spsr & PSR_MODE) == PSR_USR32_MODE)
195 data_abort_fixup(trapframe_t *tf, u_int fsr, u_int far, struct thread *td, struct ksig *ksig)
201 	error = cpu_dataabt_fixup(tf);
209 	    TRAP_USERMODE(tf) ? "user" : "kernel");
210 	printf("pc = 0x%08x, opcode 0x%08x, insn = ", tf->tf_pc,
211 	    *((u_int *)tf->tf_pc));
212 	disassemble(tf->tf_pc);
215 	if (!TRAP_USERMODE(tf))
216 		dab_fatal(tf, fsr, far, td, NULL, ksig);
225 data_abort_handler(trapframe_t *tf)
243 	printf("data abort: %p (from %p %p)\n", (void*)far, (void*)tf->tf_pc,
244 	    (void*)tf->tf_svc_lr);
257 	user = TRAP_USERMODE(tf);
261 		td->td_frame = tf;
270 		if (__predict_true(tf->tf_spsr & I32_bit) == 0)
272 		if (__predict_true(tf->tf_spsr & F32_bit) == 0)
279 		if ((data_aborts[fsr & FAULT_TYPE_MASK].func)(tf, fsr, far,
302 		tf->tf_r0 = EFAULT;
303 		tf->tf_pc = (register_t)(intptr_t) pcb->pcb_onfault;
314 	if (__predict_false((tf->tf_pc & 3) != 0)) {
330 		dab_fatal(tf, fsr, far, td, &ksig);
334 	switch (data_abort_fixup(tf, fsr, far, td, &ksig)) {
357 	     (ReadWord(tf->tf_pc) & 0x05200000) != 0x04200000))) {
361 		if (__predict_false((tf->tf_spsr & PSR_MODE)==PSR_UND32_MODE)) {
393 		u_int insn = ReadWord(tf->tf_pc);
439 			tf->tf_r0 = error;
440 			tf->tf_pc = (register_t)(intptr_t) pcb->pcb_onfault;
446 		dab_fatal(tf, fsr, far, td, &ksig);
465 		userret(td, tf);
482 dab_fatal(trapframe_t *tf, u_int fsr, u_int far, struct thread *td, struct ksig *ksig)
486 	mode = TRAP_USERMODE(tf) ? "user" : "kernel";
492 		printf("trapframe: %p\nFSR=%08x, FAR=", tf, fsr);
497 		printf("spsr=%08x\n", tf->tf_spsr);
500 		    mode, tf->tf_pc);
501 		printf("trapframe: %p, spsr=%08x\n", tf, tf->tf_spsr);
505 	    tf->tf_r0, tf->tf_r1, tf->tf_r2, tf->tf_r3);
507 	    tf->tf_r4, tf->tf_r5, tf->tf_r6, tf->tf_r7);
509 	    tf->tf_r8, tf->tf_r9, tf->tf_r10, tf->tf_r11);
510 	printf("r12=%08x, ", tf->tf_r12);
512 	if (TRAP_USERMODE(tf))
514 		    tf->tf_usr_sp, tf->tf_usr_lr);
517 		    tf->tf_svc_sp, tf->tf_svc_lr);
518 	printf(", pc =%08x\n\n", tf->tf_pc);
522 		kdb_trap(fsr, 0, tf);
538 dab_align(trapframe_t *tf, u_int fsr, u_int far, struct thread *td, struct ksig *ksig)
542 	if (!TRAP_USERMODE(tf)) {
544 			dab_fatal(tf, fsr, far, td, ksig);
545 		tf->tf_r0 = EFAULT;
546 		tf->tf_pc = (int)td->td_pcb->pcb_onfault;
553 	(void) data_abort_fixup(tf, fsr, far, td, ksig);
558 	td->td_frame = tf;
578  * since some of the machine state is lost. In this case, tf->tf_pc
586 dab_buserr(trapframe_t *tf, u_int fsr, u_int far, struct thread *td, struct ksig *ksig)
592 	    (tf->tf_spsr & PSR_MODE) == PSR_ABT32_MODE) {
599 		tf->tf_spsr &= ~PSR_MODE;
607 		if (tf != ((trapframe_t *)pcb->un_32.pcb32_sp) - 1) {
612 			 * of tf->tf_pc is irrelevant.
614 			tf->tf_spsr |= PSR_SVC32_MODE;
626 			tf->tf_spsr |= PSR_USR32_MODE;
627 			tf->tf_pc = tf->tf_usr_lr;
637 		tf->tf_r0 = EFAULT;
638 		tf->tf_pc = (register_t)(intptr_t) pcb->pcb_onfault;
643 	(void) data_abort_fixup(tf, fsr, far, td, ksig);
648 	if (!TRAP_USERMODE(tf))
649 		dab_fatal(tf, fsr, far, td, ksig);
654 	td->td_frame = tf;
660 prefetch_abort_fixup(trapframe_t *tf, struct ksig *ksig)
666 	error = cpu_prefetchabt_fixup(tf);
675 	    TRAP_USERMODE(tf) ? "user" : "kernel");
676 	printf("pc = 0x%08x, opcode 0x%08x, insn = ", tf->tf_pc,
677 	    *((u_int *)tf->tf_pc));
678 	disassemble(tf->tf_pc);
681 	if (!TRAP_USERMODE(tf))
682 		dab_fatal(tf, 0, tf->tf_pc, NULL, ksig);
691  * void prefetch_abort_handler(trapframe_t *tf)
702 prefetch_abort_handler(trapframe_t *tf)
717 	printf("prefetch abort handler: %p %p\n", (void*)tf->tf_pc,
718 	    (void*)tf->tf_usr_lr);
725 	if (TRAP_USERMODE(tf)) {
726 		td->td_frame = tf;
730 	fault_pc = tf->tf_pc;
732 		if (__predict_true(tf->tf_spsr & I32_bit) == 0)
734 		if (__predict_true(tf->tf_spsr & F32_bit) == 0)
739 	switch (prefetch_abort_fixup(tf, &ksig)) {
746 		td->td_frame = tf;
753 	if (__predict_false(!TRAP_USERMODE(tf)))
754 		dab_fatal(tf, 0, tf->tf_pc, NULL, &ksig);
810 	userret(td, tf);