1###############################################################################
2#
3# MN10300 Exception and interrupt entry points
4#
5# Copyright (C) 2007 Matsushita Electric Industrial Co., Ltd.
6# Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
7# Modified by David Howells (dhowells@redhat.com)
8#
9# This program is free software; you can redistribute it and/or
10# modify it under the terms of the GNU General Public Licence
11# as published by the Free Software Foundation; either version
12# 2 of the Licence, or (at your option) any later version.
13#
14###############################################################################
15#include <linux/sys.h>
16#include <linux/linkage.h>
17#include <asm/smp.h>
18#include <asm/system.h>
19#include <asm/irqflags.h>
20#include <asm/thread_info.h>
21#include <asm/intctl-regs.h>
22#include <asm/busctl-regs.h>
23#include <asm/timer-regs.h>
24#include <unit/leds.h>
25#include <asm/page.h>
26#include <asm/pgtable.h>
27#include <asm/errno.h>
28#include <asm/asm-offsets.h>
29#include <asm/frame.inc>
30
31#if defined(CONFIG_SMP) && defined(CONFIG_GDBSTUB)
32#include <asm/gdb-stub.h>
33#endif /* CONFIG_SMP && CONFIG_GDBSTUB */
34
35#ifdef CONFIG_PREEMPT
36#define preempt_stop		LOCAL_IRQ_DISABLE
37#else
38#define preempt_stop
39#define resume_kernel		restore_all
40#endif
41
42	.am33_2
43
44###############################################################################
45#
46# the return path for a forked child
47# - on entry, D0 holds the address of the previous task to run
48#
49###############################################################################
50ENTRY(ret_from_fork)
51	call	schedule_tail[],0
52	GET_THREAD_INFO a2
53
54	# return 0 to indicate child process
55	clr	d0
56	mov	d0,(REG_D0,fp)
57	jmp	syscall_exit
58
59###############################################################################
60#
61# system call handler
62#
63###############################################################################
64ENTRY(system_call)
65	add	-4,sp
66	SAVE_ALL
67	mov	d0,(REG_ORIG_D0,fp)
68	GET_THREAD_INFO a2
69	cmp	nr_syscalls,d0
70	bcc	syscall_badsys
71	btst	_TIF_SYSCALL_TRACE,(TI_flags,a2)
72	bne	syscall_entry_trace
73syscall_call:
74	add	d0,d0,a1
75	add	a1,a1
76	mov	(REG_A0,fp),d0
77	mov	(sys_call_table,a1),a0
78	calls	(a0)
79	mov	d0,(REG_D0,fp)
80syscall_exit:
81	# make sure we don't miss an interrupt setting need_resched or
82	# sigpending between sampling and the rti
83	LOCAL_IRQ_DISABLE
84	mov	(TI_flags,a2),d2
85	btst	_TIF_ALLWORK_MASK,d2
86	bne	syscall_exit_work
87restore_all:
88	RESTORE_ALL
89
90###############################################################################
91#
92# perform work that needs to be done immediately before resumption and syscall
93# tracing
94#
95###############################################################################
96	ALIGN
97syscall_exit_work:
98	btst	_TIF_SYSCALL_TRACE,d2
99	beq	work_pending
100	LOCAL_IRQ_ENABLE		# could let syscall_trace_exit() call
101					# schedule() instead
102	mov	fp,d0
103	call	syscall_trace_exit[],0	# do_syscall_trace(regs)
104	jmp	resume_userspace
105
106	ALIGN
107work_pending:
108	btst	_TIF_NEED_RESCHED,d2
109	beq	work_notifysig
110
111work_resched:
112	call	schedule[],0
113
114	# make sure we don't miss an interrupt setting need_resched or
115	# sigpending between sampling and the rti
116	LOCAL_IRQ_DISABLE
117
118	# is there any work to be done other than syscall tracing?
119	mov	(TI_flags,a2),d2
120	btst	_TIF_WORK_MASK,d2
121	beq	restore_all
122	btst	_TIF_NEED_RESCHED,d2
123	bne	work_resched
124
125	# deal with pending signals and notify-resume requests
126work_notifysig:
127	mov	fp,d0
128	mov	d2,d1
129	call	do_notify_resume[],0
130	jmp	resume_userspace
131
132	# perform syscall entry tracing
133syscall_entry_trace:
134	mov	-ENOSYS,d0
135	mov	d0,(REG_D0,fp)
136	mov	fp,d0
137	call	syscall_trace_entry[],0	# returns the syscall number to actually use
138	mov	(REG_D1,fp),d1
139	cmp	nr_syscalls,d0
140	bcs	syscall_call
141	jmp	syscall_exit
142
143syscall_badsys:
144	mov	-ENOSYS,d0
145	mov	d0,(REG_D0,fp)
146	jmp	resume_userspace
147
148	# userspace resumption stub bypassing syscall exit tracing
149	.globl	ret_from_exception, ret_from_intr
150	ALIGN
151ret_from_exception:
152	preempt_stop
153ret_from_intr:
154	GET_THREAD_INFO a2
155	mov	(REG_EPSW,fp),d0	# need to deliver signals before
156					# returning to userspace
157	and	EPSW_nSL,d0
158	beq	resume_kernel		# returning to supervisor mode
159
160ENTRY(resume_userspace)
161	# make sure we don't miss an interrupt setting need_resched or
162	# sigpending between sampling and the rti
163	LOCAL_IRQ_DISABLE
164
165	# is there any work to be done on int/exception return?
166	mov	(TI_flags,a2),d2
167	btst	_TIF_WORK_MASK,d2
168	bne	work_pending
169	jmp	restore_all
170
171#ifdef CONFIG_PREEMPT
172ENTRY(resume_kernel)
173	LOCAL_IRQ_DISABLE
174	mov	(TI_preempt_count,a2),d0	# non-zero preempt_count ?
175	cmp	0,d0
176	bne	restore_all
177
178need_resched:
179	btst	_TIF_NEED_RESCHED,(TI_flags,a2)
180	beq	restore_all
181	mov	(REG_EPSW,fp),d0
182	and	EPSW_IM,d0
183	cmp	EPSW_IM_7,d0		# interrupts off (exception path) ?
184	bne	restore_all
185	call	preempt_schedule_irq[],0
186	jmp	need_resched
187#endif
188
189
190###############################################################################
191#
192# IRQ handler entry point
193# - intended to be entered at multiple priorities
194#
195###############################################################################
196ENTRY(irq_handler)
197	add	-4,sp
198	SAVE_ALL
199
200	# it's not a syscall
201	mov	0xffffffff,d0
202	mov	d0,(REG_ORIG_D0,fp)
203
204	mov	fp,d0
205	call	do_IRQ[],0			# do_IRQ(regs)
206
207	jmp	ret_from_intr
208
209###############################################################################
210#
211# Double Fault handler entry point
212# - note that there will not be a stack, D0/A0 will hold EPSW/PC as were
213#
214###############################################################################
215	.section .bss
216	.balign	THREAD_SIZE
217	.space	THREAD_SIZE
218__df_stack:
219	.previous
220
221ENTRY(double_fault)
222	mov	a0,(__df_stack-4)	# PC as was
223	mov	d0,(__df_stack-8)	# EPSW as was
224	mn10300_set_dbfleds		# display 'db-f' on the LEDs
225	mov	0xaa55aa55,d0
226	mov	d0,(__df_stack-12)	# no ORIG_D0
227	mov	sp,a0			# save corrupted SP
228	mov	__df_stack-12,sp	# emergency supervisor stack
229	SAVE_ALL
230	mov	a0,(REG_A0,fp)		# save corrupted SP as A0 (which got
231					# clobbered by the CPU)
232	mov	fp,d0
233	calls	do_double_fault
234double_fault_loop:
235	bra	double_fault_loop
236
237###############################################################################
238#
239# Bus Error handler entry point
240# - handle external (async) bus errors separately
241#
242###############################################################################
243ENTRY(raw_bus_error)
244	add	-4,sp
245	mov	d0,(sp)
246#if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR)
247	mov	(MMUCTR),d0
248	mov	d0,(MMUCTR)
249#endif
250	mov	(BCBERR),d0		# what
251	btst	BCBERR_BEMR_DMA,d0	# see if it was an external bus error
252	beq	__common_exception_aux	# it wasn't
253
254	SAVE_ALL
255	mov	(BCBEAR),d1		# destination of erroneous access
256
257	mov	(REG_ORIG_D0,fp),d2
258	mov	d2,(REG_D0,fp)
259	mov	-1,d2
260	mov	d2,(REG_ORIG_D0,fp)
261
262	add	-4,sp
263	mov	fp,(12,sp)		# frame pointer
264	call	io_bus_error[],0
265	jmp	restore_all
266
267###############################################################################
268#
269# NMI exception entry points
270#
271# This is used by ordinary interrupt channels that have the GxICR_NMI bit set
272# in addition to the main NMI and Watchdog channels.  SMP NMI IPIs use this
273# facility.
274#
275###############################################################################
276ENTRY(nmi_handler)
277	add	-4,sp
278	mov	d0,(sp)
279	mov	(TBR),d0
280
281#ifdef CONFIG_SMP
282	add	-4,sp
283	mov	d0,(sp)			# save d0(TBR)
284	movhu	(NMIAGR),d0
285	and	NMIAGR_GN,d0
286	lsr	0x2,d0
287	cmp	CALL_FUNCTION_NMI_IPI,d0
288	bne	nmi_not_smp_callfunc	# if not call function, jump
289
290	# function call nmi ipi
291	add	4,sp			# no need to store TBR
292	mov	GxICR_DETECT,d0		# clear NMI request
293	movbu	d0,(GxICR(CALL_FUNCTION_NMI_IPI))
294	movhu	(GxICR(CALL_FUNCTION_NMI_IPI)),d0
295	and	~EPSW_NMID,epsw		# enable NMI
296
297	mov	(sp),d0			# restore d0
298	SAVE_ALL
299	call	smp_nmi_call_function_interrupt[],0
300	RESTORE_ALL
301
302nmi_not_smp_callfunc:
303#ifdef CONFIG_KERNEL_DEBUGGER
304	cmp	DEBUGGER_NMI_IPI,d0
305	bne	nmi_not_debugger	# if not kernel debugger NMI IPI, jump
306
307	# kernel debugger NMI IPI
308	add	4,sp			# no need to store TBR
309	mov	GxICR_DETECT,d0		# clear NMI
310	movbu	d0,(GxICR(DEBUGGER_NMI_IPI))
311	movhu	(GxICR(DEBUGGER_NMI_IPI)),d0
312	and	~EPSW_NMID,epsw		# enable NMI
313
314	mov     (sp),d0
315	SAVE_ALL
316	mov	fp,d0			# arg 0: stacked register file
317	mov	a2,d1			# arg 1: exception number
318	call    debugger_nmi_interrupt[],0
319	RESTORE_ALL
320
321nmi_not_debugger:
322#endif /* CONFIG_KERNEL_DEBUGGER */
323	mov     (sp),d0                 # restore TBR to d0
324	add     4,sp
325#endif /* CONFIG_SMP */
326
327	bra	__common_exception_nonmi
328
329###############################################################################
330#
331# General exception entry point
332#
333###############################################################################
334ENTRY(__common_exception)
335	add	-4,sp
336	mov	d0,(sp)
337#if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR)
338	mov	(MMUCTR),d0
339	mov	d0,(MMUCTR)
340#endif
341
342__common_exception_aux:
343	mov	(TBR),d0
344	and	~EPSW_NMID,epsw		# turn NMIs back on if not NMI
345	or	EPSW_IE,epsw
346
347__common_exception_nonmi:
348	and	0x0000FFFF,d0		# turn the exception code into a vector
349					# table index
350
351	btst	0x00000007,d0
352	bne	1f
353	cmp	0x00000400,d0
354	bge	1f
355
356	SAVE_ALL			# build the stack frame
357
358	mov	(REG_D0,fp),a2		# get the exception number
359	mov	(REG_ORIG_D0,fp),d0
360	mov	d0,(REG_D0,fp)
361	mov	-1,d0
362	mov	d0,(REG_ORIG_D0,fp)
363
364#ifdef CONFIG_GDBSTUB
365#ifdef CONFIG_SMP
366	call	gdbstub_busy_check[],0
367	and	d0,d0			# check return value
368	beq	2f
369#else  /* CONFIG_SMP */
370	btst	0x01,(gdbstub_busy)
371	beq	2f
372#endif /* CONFIG_SMP */
373	and	~EPSW_IE,epsw
374	mov	fp,d0
375	mov	a2,d1
376	call	gdbstub_exception[],0	# gdbstub itself caused an exception
377	bra	restore_all
3782:
379#endif /* CONFIG_GDBSTUB */
380
381	mov	fp,d0			# arg 0: stacked register file
382	mov	a2,d1			# arg 1: exception number
383	lsr	1,a2
384
385	mov	(exception_table,a2),a2
386	calls	(a2)
387	jmp	ret_from_exception
388
3891:	pi				# BUG() equivalent
390
391###############################################################################
392#
393# Exception handler functions table
394#
395###############################################################################
396	.data
397ENTRY(exception_table)
398	.rept	0x400>>1
399	 .long	uninitialised_exception
400	.endr
401	.previous
402
403###############################################################################
404#
405# Change an entry in the exception table
406# - D0 exception code, D1 handler
407#
408###############################################################################
409ENTRY(set_excp_vector)
410	lsr	1,d0
411	add	exception_table,d0
412	mov	d1,(d0)
413	mov	4,d1
414	ret	[],0
415
416###############################################################################
417#
418# System call table
419#
420###############################################################################
421	.data
422ENTRY(sys_call_table)
423	.long sys_restart_syscall	/* 0 */
424	.long sys_exit
425	.long sys_fork
426	.long sys_read
427	.long sys_write
428	.long sys_open		/* 5 */
429	.long sys_close
430	.long sys_waitpid
431	.long sys_creat
432	.long sys_link
433	.long sys_unlink	/* 10 */
434	.long sys_execve
435	.long sys_chdir
436	.long sys_time
437	.long sys_mknod
438	.long sys_chmod		/* 15 */
439	.long sys_lchown16
440	.long sys_ni_syscall	/* old break syscall holder */
441	.long sys_stat
442	.long sys_lseek
443	.long sys_getpid	/* 20 */
444	.long sys_mount
445	.long sys_oldumount
446	.long sys_setuid16
447	.long sys_getuid16
448	.long sys_stime		/* 25 */
449	.long sys_ptrace
450	.long sys_alarm
451	.long sys_fstat
452	.long sys_pause
453	.long sys_utime		/* 30 */
454	.long sys_ni_syscall	/* old stty syscall holder */
455	.long sys_ni_syscall	/* old gtty syscall holder */
456	.long sys_access
457	.long sys_nice
458	.long sys_ni_syscall	/* 35 - old ftime syscall holder */
459	.long sys_sync
460	.long sys_kill
461	.long sys_rename
462	.long sys_mkdir
463	.long sys_rmdir		/* 40 */
464	.long sys_dup
465	.long sys_pipe
466	.long sys_times
467	.long sys_ni_syscall	/* old prof syscall holder */
468	.long sys_brk		/* 45 */
469	.long sys_setgid16
470	.long sys_getgid16
471	.long sys_signal
472	.long sys_geteuid16
473	.long sys_getegid16	/* 50 */
474	.long sys_acct
475	.long sys_umount	/* recycled never used phys() */
476	.long sys_ni_syscall	/* old lock syscall holder */
477	.long sys_ioctl
478	.long sys_fcntl		/* 55 */
479	.long sys_ni_syscall	/* old mpx syscall holder */
480	.long sys_setpgid
481	.long sys_ni_syscall	/* old ulimit syscall holder */
482	.long sys_ni_syscall	/* old sys_olduname */
483	.long sys_umask		/* 60 */
484	.long sys_chroot
485	.long sys_ustat
486	.long sys_dup2
487	.long sys_getppid
488	.long sys_getpgrp	/* 65 */
489	.long sys_setsid
490	.long sys_sigaction
491	.long sys_sgetmask
492	.long sys_ssetmask
493	.long sys_setreuid16	/* 70 */
494	.long sys_setregid16
495	.long sys_sigsuspend
496	.long sys_sigpending
497	.long sys_sethostname
498	.long sys_setrlimit	/* 75 */
499	.long sys_old_getrlimit
500	.long sys_getrusage
501	.long sys_gettimeofday
502	.long sys_settimeofday
503	.long sys_getgroups16	/* 80 */
504	.long sys_setgroups16
505	.long sys_old_select
506	.long sys_symlink
507	.long sys_lstat
508	.long sys_readlink	/* 85 */
509	.long sys_uselib
510	.long sys_swapon
511	.long sys_reboot
512	.long sys_old_readdir
513	.long old_mmap		/* 90 */
514	.long sys_munmap
515	.long sys_truncate
516	.long sys_ftruncate
517	.long sys_fchmod
518	.long sys_fchown16	/* 95 */
519	.long sys_getpriority
520	.long sys_setpriority
521	.long sys_ni_syscall	/* old profil syscall holder */
522	.long sys_statfs
523	.long sys_fstatfs	/* 100 */
524	.long sys_ni_syscall	/* ioperm */
525	.long sys_socketcall
526	.long sys_syslog
527	.long sys_setitimer
528	.long sys_getitimer	/* 105 */
529	.long sys_newstat
530	.long sys_newlstat
531	.long sys_newfstat
532	.long sys_ni_syscall	/* old sys_uname */
533	.long sys_ni_syscall	/* 110 - iopl */
534	.long sys_vhangup
535	.long sys_ni_syscall	/* old "idle" system call */
536	.long sys_ni_syscall	/* vm86old */
537	.long sys_wait4
538	.long sys_swapoff	/* 115 */
539	.long sys_sysinfo
540	.long sys_ipc
541	.long sys_fsync
542	.long sys_sigreturn
543	.long sys_clone		/* 120 */
544	.long sys_setdomainname
545	.long sys_newuname
546	.long sys_ni_syscall	/* modify_ldt */
547	.long sys_adjtimex
548	.long sys_mprotect	/* 125 */
549	.long sys_sigprocmask
550	.long sys_ni_syscall	/* old "create_module" */
551	.long sys_init_module
552	.long sys_delete_module
553	.long sys_ni_syscall	/* 130:	old "get_kernel_syms" */
554	.long sys_quotactl
555	.long sys_getpgid
556	.long sys_fchdir
557	.long sys_bdflush
558	.long sys_sysfs		/* 135 */
559	.long sys_personality
560	.long sys_ni_syscall	/* reserved for afs_syscall */
561	.long sys_setfsuid16
562	.long sys_setfsgid16
563	.long sys_llseek	/* 140 */
564	.long sys_getdents
565	.long sys_select
566	.long sys_flock
567	.long sys_msync
568	.long sys_readv		/* 145 */
569	.long sys_writev
570	.long sys_getsid
571	.long sys_fdatasync
572	.long sys_sysctl
573	.long sys_mlock		/* 150 */
574	.long sys_munlock
575	.long sys_mlockall
576	.long sys_munlockall
577	.long sys_sched_setparam
578	.long sys_sched_getparam   /* 155 */
579	.long sys_sched_setscheduler
580	.long sys_sched_getscheduler
581	.long sys_sched_yield
582	.long sys_sched_get_priority_max
583	.long sys_sched_get_priority_min  /* 160 */
584	.long sys_sched_rr_get_interval
585	.long sys_nanosleep
586	.long sys_mremap
587	.long sys_setresuid16
588	.long sys_getresuid16	/* 165 */
589	.long sys_ni_syscall	/* vm86 */
590	.long sys_ni_syscall	/* Old sys_query_module */
591	.long sys_poll
592	.long sys_ni_syscall	/* was nfsservctl */
593	.long sys_setresgid16	/* 170 */
594	.long sys_getresgid16
595	.long sys_prctl
596	.long sys_rt_sigreturn
597	.long sys_rt_sigaction
598	.long sys_rt_sigprocmask	/* 175 */
599	.long sys_rt_sigpending
600	.long sys_rt_sigtimedwait
601	.long sys_rt_sigqueueinfo
602	.long sys_rt_sigsuspend
603	.long sys_pread64	/* 180 */
604	.long sys_pwrite64
605	.long sys_chown16
606	.long sys_getcwd
607	.long sys_capget
608	.long sys_capset	/* 185 */
609	.long sys_sigaltstack
610	.long sys_sendfile
611	.long sys_ni_syscall	/* reserved for streams1 */
612	.long sys_ni_syscall	/* reserved for streams2 */
613	.long sys_vfork		/* 190 */
614	.long sys_getrlimit
615	.long sys_mmap_pgoff
616	.long sys_truncate64
617	.long sys_ftruncate64
618	.long sys_stat64	/* 195 */
619	.long sys_lstat64
620	.long sys_fstat64
621	.long sys_lchown
622	.long sys_getuid
623	.long sys_getgid	/* 200 */
624	.long sys_geteuid
625	.long sys_getegid
626	.long sys_setreuid
627	.long sys_setregid
628	.long sys_getgroups	/* 205 */
629	.long sys_setgroups
630	.long sys_fchown
631	.long sys_setresuid
632	.long sys_getresuid
633	.long sys_setresgid	/* 210 */
634	.long sys_getresgid
635	.long sys_chown
636	.long sys_setuid
637	.long sys_setgid
638	.long sys_setfsuid	/* 215 */
639	.long sys_setfsgid
640	.long sys_pivot_root
641	.long sys_mincore
642	.long sys_madvise
643	.long sys_getdents64	/* 220 */
644	.long sys_fcntl64
645	.long sys_ni_syscall	/* reserved for TUX */
646	.long sys_ni_syscall
647	.long sys_gettid
648	.long sys_readahead	/* 225 */
649	.long sys_setxattr
650	.long sys_lsetxattr
651	.long sys_fsetxattr
652	.long sys_getxattr
653	.long sys_lgetxattr	/* 230 */
654	.long sys_fgetxattr
655	.long sys_listxattr
656	.long sys_llistxattr
657	.long sys_flistxattr
658	.long sys_removexattr	/* 235 */
659	.long sys_lremovexattr
660	.long sys_fremovexattr
661	.long sys_tkill
662	.long sys_sendfile64
663	.long sys_futex		/* 240 */
664	.long sys_sched_setaffinity
665	.long sys_sched_getaffinity
666	.long sys_ni_syscall	/* sys_set_thread_area */
667	.long sys_ni_syscall	/* sys_get_thread_area */
668	.long sys_io_setup	/* 245 */
669	.long sys_io_destroy
670	.long sys_io_getevents
671	.long sys_io_submit
672	.long sys_io_cancel
673	.long sys_fadvise64	/* 250 */
674	.long sys_ni_syscall
675	.long sys_exit_group
676	.long sys_lookup_dcookie
677	.long sys_epoll_create
678	.long sys_epoll_ctl	/* 255 */
679	.long sys_epoll_wait
680 	.long sys_remap_file_pages
681 	.long sys_set_tid_address
682 	.long sys_timer_create
683 	.long sys_timer_settime		/* 260 */
684 	.long sys_timer_gettime
685 	.long sys_timer_getoverrun
686 	.long sys_timer_delete
687 	.long sys_clock_settime
688 	.long sys_clock_gettime		/* 265 */
689 	.long sys_clock_getres
690 	.long sys_clock_nanosleep
691	.long sys_statfs64
692	.long sys_fstatfs64
693	.long sys_tgkill		/* 270 */
694	.long sys_utimes
695 	.long sys_fadvise64_64
696	.long sys_ni_syscall	/* sys_vserver */
697	.long sys_mbind
698	.long sys_get_mempolicy		/* 275 */
699	.long sys_set_mempolicy
700	.long sys_mq_open
701	.long sys_mq_unlink
702	.long sys_mq_timedsend
703	.long sys_mq_timedreceive	/* 280 */
704	.long sys_mq_notify
705	.long sys_mq_getsetattr
706	.long sys_kexec_load
707	.long sys_waitid
708	.long sys_ni_syscall		/* 285 */ /* available */
709	.long sys_add_key
710	.long sys_request_key
711	.long sys_keyctl
712	.long sys_cacheflush
713	.long sys_ioprio_set		/* 290 */
714	.long sys_ioprio_get
715	.long sys_inotify_init
716	.long sys_inotify_add_watch
717	.long sys_inotify_rm_watch
718	.long sys_migrate_pages		/* 295 */
719	.long sys_openat
720	.long sys_mkdirat
721	.long sys_mknodat
722	.long sys_fchownat
723	.long sys_futimesat		/* 300 */
724	.long sys_fstatat64
725	.long sys_unlinkat
726	.long sys_renameat
727	.long sys_linkat
728	.long sys_symlinkat		/* 305 */
729	.long sys_readlinkat
730	.long sys_fchmodat
731	.long sys_faccessat
732	.long sys_pselect6
733	.long sys_ppoll			/* 310 */
734	.long sys_unshare
735	.long sys_set_robust_list
736	.long sys_get_robust_list
737	.long sys_splice
738	.long sys_sync_file_range	/* 315 */
739	.long sys_tee
740	.long sys_vmsplice
741	.long sys_move_pages
742	.long sys_getcpu
743	.long sys_epoll_pwait		/* 320 */
744	.long sys_utimensat
745	.long sys_signalfd
746	.long sys_timerfd_create
747	.long sys_eventfd
748	.long sys_fallocate		/* 325 */
749	.long sys_timerfd_settime
750	.long sys_timerfd_gettime
751	.long sys_signalfd4
752	.long sys_eventfd2
753	.long sys_epoll_create1		/* 330 */
754	.long sys_dup3
755	.long sys_pipe2
756	.long sys_inotify_init1
757	.long sys_preadv
758	.long sys_pwritev		/* 335 */
759	.long sys_rt_tgsigqueueinfo
760	.long sys_perf_event_open
761	.long sys_recvmmsg
762	.long sys_setns
763
764
765nr_syscalls=(.-sys_call_table)/4
766