| blob | 177d61de51c938557596658847b6903d13d24ed9 |
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/irqflags.h>
19 #include <asm/thread_info.h>
20 #include <asm/intctl-regs.h>
21 #include <asm/busctl-regs.h>
22 #include <asm/timer-regs.h>
23 #include <unit/leds.h>
24 #include <asm/page.h>
25 #include <asm/pgtable.h>
26 #include <asm/errno.h>
27 #include <asm/asm-offsets.h>
28 #include <asm/frame.inc>
30 #if defined(CONFIG_SMP) && defined(CONFIG_GDBSTUB)
31 #include <asm/gdb-stub.h>
32 #endif /* CONFIG_SMP && CONFIG_GDBSTUB */
34 #ifdef CONFIG_PREEMPT
35 #define preempt_stop LOCAL_IRQ_DISABLE
36 #else
37 #define preempt_stop
38 #define resume_kernel restore_all
39 #endif
41 .am33_2
43 ###############################################################################
44 #
45 # the return path for a forked child
46 # - on entry, D0 holds the address of the previous task to run
47 #
48 ###############################################################################
49 ENTRY(ret_from_fork)
50 call schedule_tail[],0
51 GET_THREAD_INFO a2
53 # return 0 to indicate child process
54 clr d0
55 mov d0,(REG_D0,fp)
56 jmp syscall_exit
58 ENTRY(ret_from_kernel_thread)
59 call schedule_tail[],0
60 mov (REG_D0,fp),d0
61 mov (REG_A0,fp),a0
62 calls (a0)
63 GET_THREAD_INFO a2 # A2 must be set on return from sys_exit()
64 clr d0
65 mov d0,(REG_D0,fp)
66 jmp syscall_exit
68 ###############################################################################
69 #
70 # system call handler
71 #
72 ###############################################################################
73 ENTRY(system_call)
74 add -4,sp
75 SAVE_ALL
76 mov d0,(REG_ORIG_D0,fp)
77 GET_THREAD_INFO a2
78 cmp nr_syscalls,d0
79 bcc syscall_badsys
80 btst _TIF_SYSCALL_TRACE,(TI_flags,a2)
81 bne syscall_entry_trace
82 syscall_call:
83 add d0,d0,a1
84 add a1,a1
85 mov (REG_A0,fp),d0
86 mov (sys_call_table,a1),a0
87 calls (a0)
88 mov d0,(REG_D0,fp)
89 syscall_exit:
90 # make sure we don't miss an interrupt setting need_resched or
91 # sigpending between sampling and the rti
92 LOCAL_IRQ_DISABLE
93 mov (TI_flags,a2),d2
94 btst _TIF_ALLWORK_MASK,d2
95 bne syscall_exit_work
96 restore_all:
97 RESTORE_ALL
99 ###############################################################################
100 #
101 # perform work that needs to be done immediately before resumption and syscall
102 # tracing
103 #
104 ###############################################################################
105 ALIGN
106 syscall_exit_work:
107 mov (REG_EPSW,fp),d0
108 and EPSW_nSL,d0
109 beq resume_kernel # returning to supervisor mode
111 LOCAL_IRQ_ENABLE # could let syscall_trace_exit() call
112 # schedule() instead
113 btst _TIF_SYSCALL_TRACE,d2
114 beq work_pending
115 mov fp,d0
116 call syscall_trace_exit[],0 # do_syscall_trace(regs)
117 jmp resume_userspace
119 ALIGN
120 work_pending:
121 btst _TIF_NEED_RESCHED,d2
122 beq work_notifysig
124 work_resched:
125 call schedule[],0
127 resume_userspace:
128 # make sure we don't miss an interrupt setting need_resched or
129 # sigpending between sampling and the rti
130 LOCAL_IRQ_DISABLE
132 # is there any work to be done other than syscall tracing?
133 mov (TI_flags,a2),d2
134 btst _TIF_WORK_MASK,d2
135 beq restore_all
137 LOCAL_IRQ_ENABLE
138 btst _TIF_NEED_RESCHED,d2
139 bne work_resched
141 # deal with pending signals and notify-resume requests
142 work_notifysig:
143 mov fp,d0
144 mov d2,d1
145 call do_notify_resume[],0
146 jmp resume_userspace
148 # perform syscall entry tracing
149 syscall_entry_trace:
150 mov -ENOSYS,d0
151 mov d0,(REG_D0,fp)
152 mov fp,d0
153 call syscall_trace_entry[],0 # returns the syscall number to actually use
154 mov (REG_D1,fp),d1
155 cmp nr_syscalls,d0
156 bcs syscall_call
157 jmp syscall_exit
159 syscall_badsys:
160 mov -ENOSYS,d0
161 mov d0,(REG_D0,fp)
162 jmp resume_userspace
164 # userspace resumption stub bypassing syscall exit tracing
165 .globl ret_from_exception, ret_from_intr
166 ALIGN
167 ret_from_exception:
168 preempt_stop
169 ret_from_intr:
170 GET_THREAD_INFO a2
171 mov (REG_EPSW,fp),d0 # need to deliver signals before
172 # returning to userspace
173 and EPSW_nSL,d0
174 bne resume_userspace # returning to userspace
176 #ifdef CONFIG_PREEMPT
177 resume_kernel:
178 LOCAL_IRQ_DISABLE
179 mov (TI_preempt_count,a2),d0 # non-zero preempt_count ?
180 cmp 0,d0
181 bne restore_all
183 need_resched:
184 btst _TIF_NEED_RESCHED,(TI_flags,a2)
185 beq restore_all
186 mov (REG_EPSW,fp),d0
187 and EPSW_IM,d0
188 cmp EPSW_IM_7,d0 # interrupts off (exception path) ?
189 bne restore_all
190 call preempt_schedule_irq[],0
191 jmp need_resched
192 #else
193 jmp resume_kernel
194 #endif
197 ###############################################################################
198 #
199 # IRQ handler entry point
200 # - intended to be entered at multiple priorities
201 #
202 ###############################################################################
203 ENTRY(irq_handler)
204 add -4,sp
205 SAVE_ALL
207 # it's not a syscall
208 mov 0xffffffff,d0
209 mov d0,(REG_ORIG_D0,fp)
211 mov fp,d0
212 call do_IRQ[],0 # do_IRQ(regs)
214 jmp ret_from_intr
216 ###############################################################################
217 #
218 # Double Fault handler entry point
219 # - note that there will not be a stack, D0/A0 will hold EPSW/PC as were
220 #
221 ###############################################################################
222 .section .bss
223 .balign THREAD_SIZE
224 .space THREAD_SIZE
225 __df_stack:
226 .previous
228 ENTRY(double_fault)
229 mov a0,(__df_stack-4) # PC as was
230 mov d0,(__df_stack-8) # EPSW as was
231 mn10300_set_dbfleds # display 'db-f' on the LEDs
232 mov 0xaa55aa55,d0
233 mov d0,(__df_stack-12) # no ORIG_D0
234 mov sp,a0 # save corrupted SP
235 mov __df_stack-12,sp # emergency supervisor stack
236 SAVE_ALL
237 mov a0,(REG_A0,fp) # save corrupted SP as A0 (which got
238 # clobbered by the CPU)
239 mov fp,d0
240 calls do_double_fault
241 double_fault_loop:
242 bra double_fault_loop
244 ###############################################################################
245 #
246 # Bus Error handler entry point
247 # - handle external (async) bus errors separately
248 #
249 ###############################################################################
250 ENTRY(raw_bus_error)
251 add -4,sp
252 mov d0,(sp)
253 #if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR)
254 mov (MMUCTR),d0
255 mov d0,(MMUCTR)
256 #endif
257 mov (BCBERR),d0 # what
258 btst BCBERR_BEMR_DMA,d0 # see if it was an external bus error
259 beq __common_exception_aux # it wasn't
261 SAVE_ALL
262 mov (BCBEAR),d1 # destination of erroneous access
264 mov (REG_ORIG_D0,fp),d2
265 mov d2,(REG_D0,fp)
266 mov -1,d2
267 mov d2,(REG_ORIG_D0,fp)
269 add -4,sp
270 mov fp,(12,sp) # frame pointer
271 call io_bus_error[],0
272 jmp restore_all
274 ###############################################################################
275 #
276 # NMI exception entry points
277 #
278 # This is used by ordinary interrupt channels that have the GxICR_NMI bit set
279 # in addition to the main NMI and Watchdog channels. SMP NMI IPIs use this
280 # facility.
281 #
282 ###############################################################################
283 ENTRY(nmi_handler)
284 add -4,sp
285 mov d0,(sp)
286 mov (TBR),d0
288 #ifdef CONFIG_SMP
289 add -4,sp
290 mov d0,(sp) # save d0(TBR)
291 movhu (NMIAGR),d0
292 and NMIAGR_GN,d0
293 lsr 0x2,d0
294 cmp CALL_FUNCTION_NMI_IPI,d0
295 bne nmi_not_smp_callfunc # if not call function, jump
297 # function call nmi ipi
298 add 4,sp # no need to store TBR
299 mov GxICR_DETECT,d0 # clear NMI request
300 movbu d0,(GxICR(CALL_FUNCTION_NMI_IPI))
301 movhu (GxICR(CALL_FUNCTION_NMI_IPI)),d0
302 and ~EPSW_NMID,epsw # enable NMI
304 mov (sp),d0 # restore d0
305 SAVE_ALL
306 call smp_nmi_call_function_interrupt[],0
307 RESTORE_ALL
309 nmi_not_smp_callfunc:
310 #ifdef CONFIG_KERNEL_DEBUGGER
311 cmp DEBUGGER_NMI_IPI,d0
312 bne nmi_not_debugger # if not kernel debugger NMI IPI, jump
314 # kernel debugger NMI IPI
315 add 4,sp # no need to store TBR
316 mov GxICR_DETECT,d0 # clear NMI
317 movbu d0,(GxICR(DEBUGGER_NMI_IPI))
318 movhu (GxICR(DEBUGGER_NMI_IPI)),d0
319 and ~EPSW_NMID,epsw # enable NMI
321 mov (sp),d0
322 SAVE_ALL
323 mov fp,d0 # arg 0: stacked register file
324 mov a2,d1 # arg 1: exception number
325 call debugger_nmi_interrupt[],0
326 RESTORE_ALL
328 nmi_not_debugger:
329 #endif /* CONFIG_KERNEL_DEBUGGER */
330 mov (sp),d0 # restore TBR to d0
331 add 4,sp
332 #endif /* CONFIG_SMP */
334 bra __common_exception_nonmi
336 ###############################################################################
337 #
338 # General exception entry point
339 #
340 ###############################################################################
341 ENTRY(__common_exception)
342 add -4,sp
343 mov d0,(sp)
344 #if defined(CONFIG_ERRATUM_NEED_TO_RELOAD_MMUCTR)
345 mov (MMUCTR),d0
346 mov d0,(MMUCTR)
347 #endif
349 __common_exception_aux:
350 mov (TBR),d0
351 and ~EPSW_NMID,epsw # turn NMIs back on if not NMI
352 or EPSW_IE,epsw
354 __common_exception_nonmi:
355 and 0x0000FFFF,d0 # turn the exception code into a vector
356 # table index
358 btst 0x00000007,d0
359 bne 1f
360 cmp 0x00000400,d0
361 bge 1f
363 SAVE_ALL # build the stack frame
365 mov (REG_D0,fp),a2 # get the exception number
366 mov (REG_ORIG_D0,fp),d0
367 mov d0,(REG_D0,fp)
368 mov -1,d0
369 mov d0,(REG_ORIG_D0,fp)
371 #ifdef CONFIG_GDBSTUB
372 #ifdef CONFIG_SMP
373 call gdbstub_busy_check[],0
374 and d0,d0 # check return value
375 beq 2f
376 #else /* CONFIG_SMP */
377 btst 0x01,(gdbstub_busy)
378 beq 2f
379 #endif /* CONFIG_SMP */
380 and ~EPSW_IE,epsw
381 mov fp,d0
382 mov a2,d1
383 call gdbstub_exception[],0 # gdbstub itself caused an exception
384 bra restore_all
385 2:
386 #endif /* CONFIG_GDBSTUB */
388 mov fp,d0 # arg 0: stacked register file
389 mov a2,d1 # arg 1: exception number
390 lsr 1,a2
392 mov (exception_table,a2),a2
393 calls (a2)
394 jmp ret_from_exception
396 1: pi # BUG() equivalent
398 ###############################################################################
399 #
400 # Exception handler functions table
401 #
402 ###############################################################################
403 .data
404 ENTRY(exception_table)
405 .rept 0x400>>1
406 .long uninitialised_exception
407 .endr
408 .previous
410 ###############################################################################
411 #
412 # Change an entry in the exception table
413 # - D0 exception code, D1 handler
414 #
415 ###############################################################################
416 ENTRY(set_excp_vector)
417 lsr 1,d0
418 add exception_table,d0
419 mov d1,(d0)
420 mov 4,d1
421 ret [],0
423 ###############################################################################
424 #
425 # System call table
426 #
427 ###############################################################################
428 .data
429 ENTRY(sys_call_table)
430 .long sys_restart_syscall /* 0 */
431 .long sys_exit
432 .long sys_fork
433 .long sys_read
434 .long sys_write
435 .long sys_open /* 5 */
436 .long sys_close
437 .long sys_waitpid
438 .long sys_creat
439 .long sys_link
440 .long sys_unlink /* 10 */
441 .long sys_execve
442 .long sys_chdir
443 .long sys_time
444 .long sys_mknod
445 .long sys_chmod /* 15 */
446 .long sys_lchown16
447 .long sys_ni_syscall /* old break syscall holder */
448 .long sys_stat
449 .long sys_lseek
450 .long sys_getpid /* 20 */
451 .long sys_mount
452 .long sys_oldumount
453 .long sys_setuid16
454 .long sys_getuid16
455 .long sys_stime /* 25 */
456 .long sys_ptrace
457 .long sys_alarm
458 .long sys_fstat
459 .long sys_pause
460 .long sys_utime /* 30 */
461 .long sys_ni_syscall /* old stty syscall holder */
462 .long sys_ni_syscall /* old gtty syscall holder */
463 .long sys_access
464 .long sys_nice
465 .long sys_ni_syscall /* 35 - old ftime syscall holder */
466 .long sys_sync
467 .long sys_kill
468 .long sys_rename
469 .long sys_mkdir
470 .long sys_rmdir /* 40 */
471 .long sys_dup
472 .long sys_pipe
473 .long sys_times
474 .long sys_ni_syscall /* old prof syscall holder */
475 .long sys_brk /* 45 */
476 .long sys_setgid16
477 .long sys_getgid16
478 .long sys_signal
479 .long sys_geteuid16
480 .long sys_getegid16 /* 50 */
481 .long sys_acct
482 .long sys_umount /* recycled never used phys() */
483 .long sys_ni_syscall /* old lock syscall holder */
484 .long sys_ioctl
485 .long sys_fcntl /* 55 */
486 .long sys_ni_syscall /* old mpx syscall holder */
487 .long sys_setpgid
488 .long sys_ni_syscall /* old ulimit syscall holder */
489 .long sys_ni_syscall /* old sys_olduname */
490 .long sys_umask /* 60 */
491 .long sys_chroot
492 .long sys_ustat
493 .long sys_dup2
494 .long sys_getppid
495 .long sys_getpgrp /* 65 */
496 .long sys_setsid
497 .long sys_sigaction
498 .long sys_sgetmask
499 .long sys_ssetmask
500 .long sys_setreuid16 /* 70 */
501 .long sys_setregid16
502 .long sys_sigsuspend
503 .long sys_sigpending
504 .long sys_sethostname
505 .long sys_setrlimit /* 75 */
506 .long sys_old_getrlimit
507 .long sys_getrusage
508 .long sys_gettimeofday
509 .long sys_settimeofday
510 .long sys_getgroups16 /* 80 */
511 .long sys_setgroups16
512 .long sys_old_select
513 .long sys_symlink
514 .long sys_lstat
515 .long sys_readlink /* 85 */
516 .long sys_uselib
517 .long sys_swapon
518 .long sys_reboot
519 .long sys_old_readdir
520 .long old_mmap /* 90 */
521 .long sys_munmap
522 .long sys_truncate
523 .long sys_ftruncate
524 .long sys_fchmod
525 .long sys_fchown16 /* 95 */
526 .long sys_getpriority
527 .long sys_setpriority
528 .long sys_ni_syscall /* old profil syscall holder */
529 .long sys_statfs
530 .long sys_fstatfs /* 100 */
531 .long sys_ni_syscall /* ioperm */
532 .long sys_socketcall
533 .long sys_syslog
534 .long sys_setitimer
535 .long sys_getitimer /* 105 */
536 .long sys_newstat
537 .long sys_newlstat
538 .long sys_newfstat
539 .long sys_ni_syscall /* old sys_uname */
540 .long sys_ni_syscall /* 110 - iopl */
541 .long sys_vhangup
542 .long sys_ni_syscall /* old "idle" system call */
543 .long sys_ni_syscall /* vm86old */
544 .long sys_wait4
545 .long sys_swapoff /* 115 */
546 .long sys_sysinfo
547 .long sys_ipc
548 .long sys_fsync
549 .long sys_sigreturn
550 .long sys_clone /* 120 */
551 .long sys_setdomainname
552 .long sys_newuname
553 .long sys_ni_syscall /* modify_ldt */
554 .long sys_adjtimex
555 .long sys_mprotect /* 125 */
556 .long sys_sigprocmask
557 .long sys_ni_syscall /* old "create_module" */
558 .long sys_init_module
559 .long sys_delete_module
560 .long sys_ni_syscall /* 130: old "get_kernel_syms" */
561 .long sys_quotactl
562 .long sys_getpgid
563 .long sys_fchdir
564 .long sys_bdflush
565 .long sys_sysfs /* 135 */
566 .long sys_personality
567 .long sys_ni_syscall /* reserved for afs_syscall */
568 .long sys_setfsuid16
569 .long sys_setfsgid16
570 .long sys_llseek /* 140 */
571 .long sys_getdents
572 .long sys_select
573 .long sys_flock
574 .long sys_msync
575 .long sys_readv /* 145 */
576 .long sys_writev
577 .long sys_getsid
578 .long sys_fdatasync
579 .long sys_sysctl
580 .long sys_mlock /* 150 */
581 .long sys_munlock
582 .long sys_mlockall
583 .long sys_munlockall
584 .long sys_sched_setparam
585 .long sys_sched_getparam /* 155 */
586 .long sys_sched_setscheduler
587 .long sys_sched_getscheduler
588 .long sys_sched_yield
589 .long sys_sched_get_priority_max
590 .long sys_sched_get_priority_min /* 160 */
591 .long sys_sched_rr_get_interval
592 .long sys_nanosleep
593 .long sys_mremap
594 .long sys_setresuid16
595 .long sys_getresuid16 /* 165 */
596 .long sys_ni_syscall /* vm86 */
597 .long sys_ni_syscall /* Old sys_query_module */
598 .long sys_poll
599 .long sys_ni_syscall /* was nfsservctl */
600 .long sys_setresgid16 /* 170 */
601 .long sys_getresgid16
602 .long sys_prctl
603 .long sys_rt_sigreturn
604 .long sys_rt_sigaction
605 .long sys_rt_sigprocmask /* 175 */
606 .long sys_rt_sigpending
607 .long sys_rt_sigtimedwait
608 .long sys_rt_sigqueueinfo
609 .long sys_rt_sigsuspend
610 .long sys_pread64 /* 180 */
611 .long sys_pwrite64
612 .long sys_chown16
613 .long sys_getcwd
614 .long sys_capget
615 .long sys_capset /* 185 */
616 .long sys_sigaltstack
617 .long sys_sendfile
618 .long sys_ni_syscall /* reserved for streams1 */
619 .long sys_ni_syscall /* reserved for streams2 */
620 .long sys_vfork /* 190 */
621 .long sys_getrlimit
622 .long sys_mmap_pgoff
623 .long sys_truncate64
624 .long sys_ftruncate64
625 .long sys_stat64 /* 195 */
626 .long sys_lstat64
627 .long sys_fstat64
628 .long sys_lchown
629 .long sys_getuid
630 .long sys_getgid /* 200 */
631 .long sys_geteuid
632 .long sys_getegid
633 .long sys_setreuid
634 .long sys_setregid
635 .long sys_getgroups /* 205 */
636 .long sys_setgroups
637 .long sys_fchown
638 .long sys_setresuid
639 .long sys_getresuid
640 .long sys_setresgid /* 210 */
641 .long sys_getresgid
642 .long sys_chown
643 .long sys_setuid
644 .long sys_setgid
645 .long sys_setfsuid /* 215 */
646 .long sys_setfsgid
647 .long sys_pivot_root
648 .long sys_mincore
649 .long sys_madvise
650 .long sys_getdents64 /* 220 */
651 .long sys_fcntl64
652 .long sys_ni_syscall /* reserved for TUX */
653 .long sys_ni_syscall
654 .long sys_gettid
655 .long sys_readahead /* 225 */
656 .long sys_setxattr
657 .long sys_lsetxattr
658 .long sys_fsetxattr
659 .long sys_getxattr
660 .long sys_lgetxattr /* 230 */
661 .long sys_fgetxattr
662 .long sys_listxattr
663 .long sys_llistxattr
664 .long sys_flistxattr
665 .long sys_removexattr /* 235 */
666 .long sys_lremovexattr
667 .long sys_fremovexattr
668 .long sys_tkill
669 .long sys_sendfile64
670 .long sys_futex /* 240 */
671 .long sys_sched_setaffinity
672 .long sys_sched_getaffinity
673 .long sys_ni_syscall /* sys_set_thread_area */
674 .long sys_ni_syscall /* sys_get_thread_area */
675 .long sys_io_setup /* 245 */
676 .long sys_io_destroy
677 .long sys_io_getevents
678 .long sys_io_submit
679 .long sys_io_cancel
680 .long sys_fadvise64 /* 250 */
681 .long sys_ni_syscall
682 .long sys_exit_group
683 .long sys_lookup_dcookie
684 .long sys_epoll_create
685 .long sys_epoll_ctl /* 255 */
686 .long sys_epoll_wait
687 .long sys_remap_file_pages
688 .long sys_set_tid_address
689 .long sys_timer_create
690 .long sys_timer_settime /* 260 */
691 .long sys_timer_gettime
692 .long sys_timer_getoverrun
693 .long sys_timer_delete
694 .long sys_clock_settime
695 .long sys_clock_gettime /* 265 */
696 .long sys_clock_getres
697 .long sys_clock_nanosleep
698 .long sys_statfs64
699 .long sys_fstatfs64
700 .long sys_tgkill /* 270 */
701 .long sys_utimes
702 .long sys_fadvise64_64
703 .long sys_ni_syscall /* sys_vserver */
704 .long sys_mbind
705 .long sys_get_mempolicy /* 275 */
706 .long sys_set_mempolicy
707 .long sys_mq_open
708 .long sys_mq_unlink
709 .long sys_mq_timedsend
710 .long sys_mq_timedreceive /* 280 */
711 .long sys_mq_notify
712 .long sys_mq_getsetattr
713 .long sys_kexec_load
714 .long sys_waitid
715 .long sys_ni_syscall /* 285 */ /* available */
716 .long sys_add_key
717 .long sys_request_key
718 .long sys_keyctl
719 .long sys_cacheflush
720 .long sys_ioprio_set /* 290 */
721 .long sys_ioprio_get
722 .long sys_inotify_init
723 .long sys_inotify_add_watch
724 .long sys_inotify_rm_watch
725 .long sys_migrate_pages /* 295 */
726 .long sys_openat
727 .long sys_mkdirat
728 .long sys_mknodat
729 .long sys_fchownat
730 .long sys_futimesat /* 300 */
731 .long sys_fstatat64
732 .long sys_unlinkat
733 .long sys_renameat
734 .long sys_linkat
735 .long sys_symlinkat /* 305 */
736 .long sys_readlinkat
737 .long sys_fchmodat
738 .long sys_faccessat
739 .long sys_pselect6
740 .long sys_ppoll /* 310 */
741 .long sys_unshare
742 .long sys_set_robust_list
743 .long sys_get_robust_list
744 .long sys_splice
745 .long sys_sync_file_range /* 315 */
746 .long sys_tee
747 .long sys_vmsplice
748 .long sys_move_pages
749 .long sys_getcpu
750 .long sys_epoll_pwait /* 320 */
751 .long sys_utimensat
752 .long sys_signalfd
753 .long sys_timerfd_create
754 .long sys_eventfd
755 .long sys_fallocate /* 325 */
756 .long sys_timerfd_settime
757 .long sys_timerfd_gettime
758 .long sys_signalfd4
759 .long sys_eventfd2
760 .long sys_epoll_create1 /* 330 */
761 .long sys_dup3
762 .long sys_pipe2
763 .long sys_inotify_init1
764 .long sys_preadv
765 .long sys_pwritev /* 335 */
766 .long sys_rt_tgsigqueueinfo
767 .long sys_perf_event_open
768 .long sys_recvmmsg
769 .long sys_setns
772 nr_syscalls=(.-sys_call_table)/4