66 int (*__debugger)(struct pt_regs *regs) __read_mostly;
67 int (*__debugger_ipi)(struct pt_regs *regs) __read_mostly;
68 int (*__debugger_bpt)(struct pt_regs *regs) __read_mostly;
69 int (*__debugger_sstep)(struct pt_regs *regs) __read_mostly;
70 int (*__debugger_iabr_match)(struct pt_regs *regs) __read_mostly;
71 int (*__debugger_break_match)(struct pt_regs *regs) __read_mostly;
72 int (*__debugger_fault_handler)(struct pt_regs *regs) __read_mostly;
117 static unsigned __kprobes long oops_begin(struct pt_regs *regs)  in oops_begin()  argument
122 	if (debugger(regs))  in oops_begin()
145 static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,  in oops_end()  argument
159 	crash_fadump(regs, "die oops");  in oops_end()
165 	if (kexec_should_crash(current) || (TRAP(regs) == 0x100)) {  in oops_end()
166 		crash_kexec(regs);  in oops_end()
173 		crash_kexec_secondary(regs);  in oops_end()
197 static int __kprobes __die(const char *str, struct pt_regs *regs, long err)  in __die()  argument
214 	if (notify_die(DIE_OOPS, str, regs, err, 255, SIGSEGV) == NOTIFY_STOP)  in __die()
218 	show_regs(regs);  in __die()
223 void die(const char *str, struct pt_regs *regs, long err)  in die()  argument
225 	unsigned long flags = oops_begin(regs);  in die()
227 	if (__die(str, regs, err))  in die()
229 	oops_end(flags, regs, err);  in die()
233 				struct pt_regs *regs, siginfo_t *info)  in user_single_step_siginfo()  argument
238 	info->si_addr = (void __user *)regs->nip;  in user_single_step_siginfo()
241 void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)  in _exception()  argument
249 	if (!user_mode(regs)) {  in _exception()
250 		die("Exception in kernel mode", regs, signr);  in _exception()
255 		printk_ratelimited(regs->msr & MSR_64BIT ? fmt64 : fmt32,  in _exception()
257 				   addr, regs->nip, regs->link, code);  in _exception()
260 	if (arch_irqs_disabled() && !arch_irq_disabled_regs(regs))  in _exception()
272 void system_reset_exception(struct pt_regs *regs)  in system_reset_exception()  argument
276 		if (ppc_md.system_reset_exception(regs))  in system_reset_exception()
280 	die("System Reset", regs, SIGABRT);  in system_reset_exception()
283 	if (!(regs->msr & MSR_RI))  in system_reset_exception()
294 long machine_check_early(struct pt_regs *regs)  in machine_check_early()  argument
301 		handled = cur_cpu_spec->machine_check_early(regs);  in machine_check_early()
305 long hmi_exception_realmode(struct pt_regs *regs)  in hmi_exception_realmode()  argument
310 		ppc_md.hmi_exception_early(regs);  in hmi_exception_realmode()
327 static inline int check_io_access(struct pt_regs *regs)  in check_io_access()  argument
330 	unsigned long msr = regs->msr;  in check_io_access()
332 	unsigned int *nip = (unsigned int *)regs->nip;  in check_io_access()
335 	    && (entry = search_exception_tables(regs->nip)) != NULL) {  in check_io_access()
356 			       regs->gpr[rb] - _IO_BASE, nip);  in check_io_access()
357 			regs->msr |= MSR_RI;  in check_io_access()
358 			regs->nip = entry->fixup;  in check_io_access()
369 #define get_reason(regs)	((regs)->dsisr)  argument
371 #define get_mc_reason(regs)	((regs)->dsisr)  argument
373 #define get_mc_reason(regs)	(mfspr(SPRN_MCSR))  argument
381 #define single_stepping(regs)	(current->thread.debug.dbcr0 & DBCR0_IC)  argument
382 #define clear_single_step(regs)	(current->thread.debug.dbcr0 &= ~DBCR0_IC)  argument
387 #define get_reason(regs)	((regs)->msr)  argument
388 #define get_mc_reason(regs)	((regs)->msr)  argument
395 #define single_stepping(regs)	((regs)->msr & MSR_SE)  argument
396 #define clear_single_step(regs)	((regs)->msr &= ~MSR_SE)  argument
400 int machine_check_4xx(struct pt_regs *regs)  in machine_check_4xx()  argument
402 	unsigned long reason = get_mc_reason(regs);  in machine_check_4xx()
414 int machine_check_440A(struct pt_regs *regs)  in machine_check_440A()  argument
416 	unsigned long reason = get_mc_reason(regs);  in machine_check_440A()
450 int machine_check_47x(struct pt_regs *regs)  in machine_check_47x()  argument
452 	unsigned long reason = get_mc_reason(regs);  in machine_check_47x()
490 int machine_check_e500mc(struct pt_regs *regs)  in machine_check_e500mc()  argument
497 		recoverable = fsl_rio_mcheck_exception(regs);  in machine_check_e500mc()
589 int machine_check_e500(struct pt_regs *regs)  in machine_check_e500()  argument
591 	unsigned long reason = get_mc_reason(regs);  in machine_check_e500()
594 		if (fsl_rio_mcheck_exception(regs))  in machine_check_e500()
596 		if (fsl_pci_mcheck_exception(regs))  in machine_check_e500()
631 int machine_check_generic(struct pt_regs *regs)  in machine_check_generic()  argument
636 int machine_check_e200(struct pt_regs *regs)  in machine_check_e200()  argument
638 	unsigned long reason = get_mc_reason(regs);  in machine_check_e200()
661 int machine_check_generic(struct pt_regs *regs)  in machine_check_generic()  argument
663 	unsigned long reason = get_mc_reason(regs);  in machine_check_generic()
698 void machine_check_exception(struct pt_regs *regs)  in machine_check_exception()  argument
712 		recover = ppc_md.machine_check_exception(regs);  in machine_check_exception()
714 		recover = cur_cpu_spec->machine_check(regs);  in machine_check_exception()
726 	bad_page_fault(regs, regs->dar, SIGBUS);  in machine_check_exception()
730 	if (debugger_fault_handler(regs))  in machine_check_exception()
733 	if (check_io_access(regs))  in machine_check_exception()
736 	die("Machine check", regs, SIGBUS);  in machine_check_exception()
739 	if (!(regs->msr & MSR_RI))  in machine_check_exception()
746 void SMIException(struct pt_regs *regs)  in SMIException()  argument
748 	die("System Management Interrupt", regs, SIGABRT);  in SMIException()
751 void handle_hmi_exception(struct pt_regs *regs)  in handle_hmi_exception()  argument
755 	old_regs = set_irq_regs(regs);  in handle_hmi_exception()
759 		ppc_md.handle_hmi_exception(regs);  in handle_hmi_exception()
765 void unknown_exception(struct pt_regs *regs)  in unknown_exception()  argument
770 	       regs->nip, regs->msr, regs->trap);  in unknown_exception()
772 	_exception(SIGTRAP, regs, 0, 0);  in unknown_exception()
777 void instruction_breakpoint_exception(struct pt_regs *regs)  in instruction_breakpoint_exception()  argument
781 	if (notify_die(DIE_IABR_MATCH, "iabr_match", regs, 5,  in instruction_breakpoint_exception()
784 	if (debugger_iabr_match(regs))  in instruction_breakpoint_exception()
786 	_exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip);  in instruction_breakpoint_exception()
792 void RunModeException(struct pt_regs *regs)  in RunModeException()  argument
794 	_exception(SIGTRAP, regs, 0, 0);  in RunModeException()
797 void __kprobes single_step_exception(struct pt_regs *regs)  in single_step_exception()  argument
801 	clear_single_step(regs);  in single_step_exception()
803 	if (notify_die(DIE_SSTEP, "single_step", regs, 5,  in single_step_exception()
806 	if (debugger_sstep(regs))  in single_step_exception()
809 	_exception(SIGTRAP, regs, TRAP_TRACE, regs->nip);  in single_step_exception()
821 static void emulate_single_step(struct pt_regs *regs)  in emulate_single_step()  argument
823 	if (single_stepping(regs))  in emulate_single_step()
824 		single_step_exception(regs);  in emulate_single_step()
854 static void parse_fpe(struct pt_regs *regs)  in parse_fpe()  argument
862 	_exception(SIGFPE, regs, code, regs->nip);  in parse_fpe()
876 static int emulate_string_inst(struct pt_regs *regs, u32 instword)  in emulate_string_inst()  argument
890 	EA = (rA == 0) ? 0 : regs->gpr[rA];  in emulate_string_inst()
896 			num_bytes = regs->xer & 0x7f;  in emulate_string_inst()
912 		if ((regs->msr & MSR_64BIT) == 0)  in emulate_string_inst()
923 					regs->gpr[rT] = 0;  in emulate_string_inst()
924 				regs->gpr[rT] |= val << shift;  in emulate_string_inst()
928 				val = regs->gpr[rT] >> shift;  in emulate_string_inst()
948 static int emulate_popcntb_inst(struct pt_regs *regs, u32 instword)  in emulate_popcntb_inst()  argument
956 	tmp = regs->gpr[rs];  in emulate_popcntb_inst()
960 	regs->gpr[ra] = tmp;  in emulate_popcntb_inst()
965 static int emulate_isel(struct pt_regs *regs, u32 instword)  in emulate_isel()  argument
974 	tmp = (rA == 0) ? 0 : regs->gpr[rA];  in emulate_isel()
975 	bit = (regs->ccr >> (31 - BC)) & 0x1;  in emulate_isel()
977 	regs->gpr[rT] = bit ? tmp : regs->gpr[rB];  in emulate_isel()
983 static inline bool tm_abort_check(struct pt_regs *regs, int cause)  in tm_abort_check()  argument
990 	if (MSR_TM_TRANSACTIONAL(regs->msr)) {  in tm_abort_check()
998 static inline bool tm_abort_check(struct pt_regs *regs, int reason)  in tm_abort_check()  argument
1004 static int emulate_instruction(struct pt_regs *regs)  in emulate_instruction()  argument
1009 	if (!user_mode(regs))  in emulate_instruction()
1011 	CHECK_FULL_REGS(regs);  in emulate_instruction()
1013 	if (get_user(instword, (u32 __user *)(regs->nip)))  in emulate_instruction()
1018 		PPC_WARN_EMULATED(mfpvr, regs);  in emulate_instruction()
1020 		regs->gpr[rd] = mfspr(SPRN_PVR);  in emulate_instruction()
1026 		PPC_WARN_EMULATED(dcba, regs);  in emulate_instruction()
1035 		PPC_WARN_EMULATED(mcrxr, regs);  in emulate_instruction()
1036 		regs->ccr = (regs->ccr & ~msk) | ((regs->xer >> shift) & msk);  in emulate_instruction()
1037 		regs->xer &= ~0xf0000000UL;  in emulate_instruction()
1043 		if (tm_abort_check(regs,  in emulate_instruction()
1046 		PPC_WARN_EMULATED(string, regs);  in emulate_instruction()
1047 		return emulate_string_inst(regs, instword);  in emulate_instruction()
1052 		PPC_WARN_EMULATED(popcntb, regs);  in emulate_instruction()
1053 		return emulate_popcntb_inst(regs, instword);  in emulate_instruction()
1058 		PPC_WARN_EMULATED(isel, regs);  in emulate_instruction()
1059 		return emulate_isel(regs, instword);  in emulate_instruction()
1064 		PPC_WARN_EMULATED(sync, regs);  in emulate_instruction()
1076 		PPC_WARN_EMULATED(mfdscr, regs);  in emulate_instruction()
1078 		regs->gpr[rd] = mfspr(SPRN_DSCR);  in emulate_instruction()
1087 		PPC_WARN_EMULATED(mtdscr, regs);  in emulate_instruction()
1089 		current->thread.dscr = regs->gpr[rd];  in emulate_instruction()
1105 static int emulate_math(struct pt_regs *regs)  in emulate_math()  argument
1108 	extern int do_mathemu(struct pt_regs *regs);  in emulate_math()
1110 	ret = do_mathemu(regs);  in emulate_math()
1112 		PPC_WARN_EMULATED(math, regs);  in emulate_math()
1116 		emulate_single_step(regs);  in emulate_math()
1121 			_exception(SIGFPE, regs, code, regs->nip);  in emulate_math()
1125 		_exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip);  in emulate_math()
1132 static inline int emulate_math(struct pt_regs *regs) { return -1; }  in emulate_math()  argument
1135 void __kprobes program_check_exception(struct pt_regs *regs)  in program_check_exception()  argument
1138 	unsigned int reason = get_reason(regs);  in program_check_exception()
1145 		parse_fpe(regs);  in program_check_exception()
1151 		if (debugger_bpt(regs))  in program_check_exception()
1155 		if (notify_die(DIE_BPT, "breakpoint", regs, 5, 5, SIGTRAP)  in program_check_exception()
1159 		if (!(regs->msr & MSR_PR) &&  /* not user-mode */  in program_check_exception()
1160 		    report_bug(regs->nip, regs) == BUG_TRAP_TYPE_WARN) {  in program_check_exception()
1161 			regs->nip += 4;  in program_check_exception()
1164 		_exception(SIGTRAP, regs, TRAP_BRKPT, regs->nip);  in program_check_exception()
1178 		if (!user_mode(regs) &&  in program_check_exception()
1179 		    report_bug(regs->nip, regs) == BUG_TRAP_TYPE_WARN) {  in program_check_exception()
1180 			regs->nip += 4;  in program_check_exception()
1189 		if (user_mode(regs)) {  in program_check_exception()
1190 			_exception(SIGILL, regs, ILL_ILLOPN, regs->nip);  in program_check_exception()
1194 			       "at %lx (msr 0x%x)\n", regs->nip, reason);  in program_check_exception()
1195 			die("Unrecoverable exception", regs, SIGABRT);  in program_check_exception()
1207 	if (!user_mode(regs))  in program_check_exception()
1211 	if (!arch_irq_disabled_regs(regs))  in program_check_exception()
1222 	if (!emulate_math(regs))  in program_check_exception()
1227 		switch (emulate_instruction(regs)) {  in program_check_exception()
1229 			regs->nip += 4;  in program_check_exception()
1230 			emulate_single_step(regs);  in program_check_exception()
1233 			_exception(SIGSEGV, regs, SEGV_MAPERR, regs->nip);  in program_check_exception()
1240 		_exception(SIGILL, regs, ILL_PRVOPC, regs->nip);  in program_check_exception()
1242 		_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);  in program_check_exception()
1252 void __kprobes emulation_assist_interrupt(struct pt_regs *regs)  in emulation_assist_interrupt()  argument
1254 	regs->msr |= REASON_ILLEGAL;  in emulation_assist_interrupt()
1255 	program_check_exception(regs);  in emulation_assist_interrupt()
1258 void alignment_exception(struct pt_regs *regs)  in alignment_exception()  argument
1264 	if (!arch_irq_disabled_regs(regs))  in alignment_exception()
1267 	if (tm_abort_check(regs, TM_CAUSE_ALIGNMENT | TM_CAUSE_PERSISTENT))  in alignment_exception()
1272 		fixed = fix_alignment(regs);  in alignment_exception()
1275 		regs->nip += 4;	/* skip over emulated instruction */  in alignment_exception()
1276 		emulate_single_step(regs);  in alignment_exception()
1288 	if (user_mode(regs))  in alignment_exception()
1289 		_exception(sig, regs, code, regs->dar);  in alignment_exception()
1291 		bad_page_fault(regs, regs->dar, sig);  in alignment_exception()
1297 void StackOverflow(struct pt_regs *regs)  in StackOverflow()  argument
1300 	       current, regs->gpr[1]);  in StackOverflow()
1301 	debugger(regs);  in StackOverflow()
1302 	show_regs(regs);  in StackOverflow()
1306 void nonrecoverable_exception(struct pt_regs *regs)  in nonrecoverable_exception()  argument
1309 	       regs->nip, regs->msr);  in nonrecoverable_exception()
1310 	debugger(regs);  in nonrecoverable_exception()
1311 	die("nonrecoverable exception", regs, SIGKILL);  in nonrecoverable_exception()
1314 void trace_syscall(struct pt_regs *regs)  in trace_syscall()  argument
1317 	       current, task_pid_nr(current), regs->nip, regs->link, regs->gpr[0],  in trace_syscall()
1318 	       regs->ccr&0x10000000?"Error=":"", regs->gpr[3], print_tainted());  in trace_syscall()
1321 void kernel_fp_unavailable_exception(struct pt_regs *regs)  in kernel_fp_unavailable_exception()  argument
1326 			  "%lx at %lx\n", regs->trap, regs->nip);  in kernel_fp_unavailable_exception()
1327 	die("Unrecoverable FP Unavailable Exception", regs, SIGABRT);  in kernel_fp_unavailable_exception()
1332 void altivec_unavailable_exception(struct pt_regs *regs)  in altivec_unavailable_exception()  argument
1336 	if (user_mode(regs)) {  in altivec_unavailable_exception()
1339 		_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);  in altivec_unavailable_exception()
1344 			"%lx at %lx\n", regs->trap, regs->nip);  in altivec_unavailable_exception()
1345 	die("Unrecoverable VMX/Altivec Unavailable Exception", regs, SIGABRT);  in altivec_unavailable_exception()
1351 void vsx_unavailable_exception(struct pt_regs *regs)  in vsx_unavailable_exception()  argument
1353 	if (user_mode(regs)) {  in vsx_unavailable_exception()
1356 		_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);  in vsx_unavailable_exception()
1361 			"%lx at %lx\n", regs->trap, regs->nip);  in vsx_unavailable_exception()
1362 	die("Unrecoverable VSX Unavailable Exception", regs, SIGABRT);  in vsx_unavailable_exception()
1366 void facility_unavailable_exception(struct pt_regs *regs)  in facility_unavailable_exception()  argument
1383 	hv = (regs->trap == 0xf80);  in facility_unavailable_exception()
1405 	if (!arch_irq_disabled_regs(regs))  in facility_unavailable_exception()
1410 		hv ? "Hypervisor " : "", facility, regs->nip, regs->msr);  in facility_unavailable_exception()
1412 	if (user_mode(regs)) {  in facility_unavailable_exception()
1413 		_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);  in facility_unavailable_exception()
1417 	die("Unexpected facility unavailable exception", regs, SIGABRT);  in facility_unavailable_exception()
1423 void fp_unavailable_tm(struct pt_regs *regs)  in fp_unavailable_tm()  argument
1428 		 regs->nip, regs->msr);  in fp_unavailable_tm()
1441 	regs->msr |= (MSR_FP | current->thread.fpexc_mode);  in fp_unavailable_tm()
1452 	if (regs->msr & MSR_VEC) {  in fp_unavailable_tm()
1455 		regs->msr |= MSR_VSX;  in fp_unavailable_tm()
1459 void altivec_unavailable_tm(struct pt_regs *regs)  in altivec_unavailable_tm()  argument
1467 		 regs->nip, regs->msr);  in altivec_unavailable_tm()
1469 	regs->msr |= MSR_VEC;  in altivec_unavailable_tm()
1473 	if (regs->msr & MSR_FP) {  in altivec_unavailable_tm()
1475 		regs->msr |= MSR_VSX;  in altivec_unavailable_tm()
1479 void vsx_unavailable_tm(struct pt_regs *regs)  in vsx_unavailable_tm()  argument
1481 	unsigned long orig_msr = regs->msr;  in vsx_unavailable_tm()
1492 		 regs->nip, regs->msr);  in vsx_unavailable_tm()
1498 		regs->msr |= MSR_VSX;  in vsx_unavailable_tm()
1505 	regs->msr |= MSR_VEC | MSR_FP | current->thread.fpexc_mode |  in vsx_unavailable_tm()
1511 	tm_recheckpoint(&current->thread, regs->msr & ~orig_msr);  in vsx_unavailable_tm()
1520 void performance_monitor_exception(struct pt_regs *regs)  in performance_monitor_exception()  argument
1524 	perf_irq(regs);  in performance_monitor_exception()
1528 void SoftwareEmulation(struct pt_regs *regs)  in SoftwareEmulation()  argument
1530 	CHECK_FULL_REGS(regs);  in SoftwareEmulation()
1532 	if (!user_mode(regs)) {  in SoftwareEmulation()
1533 		debugger(regs);  in SoftwareEmulation()
1535 			regs, SIGFPE);  in SoftwareEmulation()
1538 	if (!emulate_math(regs))  in SoftwareEmulation()
1541 	_exception(SIGILL, regs, ILL_ILLOPC, regs->nip);  in SoftwareEmulation()
1546 static void handle_debug(struct pt_regs *regs, unsigned long debug_status)  in handle_debug()  argument
1558 		do_send_trap(regs, mfspr(SPRN_DAC1), debug_status, TRAP_HWBKPT,  in handle_debug()
1563 		do_send_trap(regs, mfspr(SPRN_DAC2), debug_status, TRAP_HWBKPT,  in handle_debug()
1569 		do_send_trap(regs, mfspr(SPRN_IAC1), debug_status, TRAP_HWBKPT,  in handle_debug()
1574 		do_send_trap(regs, mfspr(SPRN_IAC2), debug_status, TRAP_HWBKPT,  in handle_debug()
1580 		do_send_trap(regs, mfspr(SPRN_IAC3), debug_status, TRAP_HWBKPT,  in handle_debug()
1585 		do_send_trap(regs, mfspr(SPRN_IAC4), debug_status, TRAP_HWBKPT,  in handle_debug()
1596 		regs->msr |= MSR_DE;  in handle_debug()
1605 void __kprobes DebugException(struct pt_regs *regs, unsigned long debug_status)  in DebugException()  argument
1615 		regs->msr &= ~MSR_DE;  in DebugException()
1623 		if (user_mode(regs)) {  in DebugException()
1626 			regs->msr |= MSR_DE;  in DebugException()
1630 		if (notify_die(DIE_SSTEP, "block_step", regs, 5,  in DebugException()
1634 		if (debugger_sstep(regs))  in DebugException()
1637 		regs->msr &= ~MSR_DE;  in DebugException()
1644 		if (notify_die(DIE_SSTEP, "single_step", regs, 5,  in DebugException()
1649 		if (debugger_sstep(regs))  in DebugException()
1652 		if (user_mode(regs)) {  in DebugException()
1656 				regs->msr |= MSR_DE;  in DebugException()
1662 		_exception(SIGTRAP, regs, TRAP_TRACE, regs->nip);  in DebugException()
1664 		handle_debug(regs, debug_status);  in DebugException()
1669 void TAUException(struct pt_regs *regs)  in TAUException()  argument
1672 	       regs->nip, regs->msr, regs->trap, print_tainted());  in TAUException()
1677 void altivec_assist_exception(struct pt_regs *regs)  in altivec_assist_exception()  argument
1681 	if (!user_mode(regs)) {  in altivec_assist_exception()
1683 		       " at %lx\n", regs->nip);  in altivec_assist_exception()
1684 		die("Kernel VMX/Altivec assist exception", regs, SIGILL);  in altivec_assist_exception()
1689 	PPC_WARN_EMULATED(altivec, regs);  in altivec_assist_exception()
1690 	err = emulate_altivec(regs);  in altivec_assist_exception()
1692 		regs->nip += 4;		/* skip emulated instruction */  in altivec_assist_exception()
1693 		emulate_single_step(regs);  in altivec_assist_exception()
1699 		_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);  in altivec_assist_exception()
1704 				   "in %s at %lx\n", current->comm, regs->nip);  in altivec_assist_exception()
1711 void CacheLockingException(struct pt_regs *regs, unsigned long address,  in CacheLockingException()  argument
1719 		_exception(SIGILL, regs, ILL_PRVOPC, regs->nip);  in CacheLockingException()
1725 void SPEFloatingPointException(struct pt_regs *regs)  in SPEFloatingPointException()  argument
1727 	extern int do_spe_mathemu(struct pt_regs *regs);  in SPEFloatingPointException()
1752 	err = do_spe_mathemu(regs);  in SPEFloatingPointException()
1754 		regs->nip += 4;		/* skip emulated instruction */  in SPEFloatingPointException()
1755 		emulate_single_step(regs);  in SPEFloatingPointException()
1761 		_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);  in SPEFloatingPointException()
1765 		       "in %s at %lx\n", current->comm, regs->nip);  in SPEFloatingPointException()
1767 		_exception(SIGFPE, regs, code, regs->nip);  in SPEFloatingPointException()
1773 void SPEFloatingPointRoundException(struct pt_regs *regs)  in SPEFloatingPointRoundException()  argument
1775 	extern int speround_handler(struct pt_regs *regs);  in SPEFloatingPointRoundException()
1779 	if (regs->msr & MSR_SPE)  in SPEFloatingPointRoundException()
1783 	regs->nip -= 4;  in SPEFloatingPointRoundException()
1784 	err = speround_handler(regs);  in SPEFloatingPointRoundException()
1786 		regs->nip += 4;		/* skip emulated instruction */  in SPEFloatingPointRoundException()
1787 		emulate_single_step(regs);  in SPEFloatingPointRoundException()
1793 		_exception(SIGSEGV, regs, SEGV_ACCERR, regs->nip);  in SPEFloatingPointRoundException()
1797 		       "in %s at %lx\n", current->comm, regs->nip);  in SPEFloatingPointRoundException()
1799 		_exception(SIGFPE, regs, 0, regs->nip);  in SPEFloatingPointRoundException()
1811 void unrecoverable_exception(struct pt_regs *regs)  in unrecoverable_exception()  argument
1814 	       regs->trap, regs->nip);  in unrecoverable_exception()
1815 	die("Unrecoverable exception", regs, SIGABRT);  in unrecoverable_exception()
1823 void __attribute__ ((weak)) WatchdogHandler(struct pt_regs *regs)  in WatchdogHandler()  argument
1830 void WatchdogException(struct pt_regs *regs)  in WatchdogException()  argument
1833 	WatchdogHandler(regs);  in WatchdogException()
1841 void kernel_bad_stack(struct pt_regs *regs)  in kernel_bad_stack()  argument
1844 	       regs->gpr[1], regs->nip);  in kernel_bad_stack()
1845 	die("Bad kernel stack pointer", regs, SIGABRT);  in kernel_bad_stack()