| blob | 3abf12c23e5f6ef329f3fca151402cec97643946 |
1 /*
2 * Copyright (C) 2000-2003 Axis Communications AB
3 *
4 * Authors: Bjorn Wesen (bjornw@axis.com)
5 * Tobias Anderberg (tobiasa@axis.com), CRISv32 port.
6 *
7 * Code for the system-call and fault low-level handling routines.
8 *
9 * NOTE: This code handles signal-recognition, which happens every time
10 * after a timer-interrupt and after each system call.
11 *
12 * Stack layout in 'ret_from_system_call':
13 * ptrace needs to have all regs on the stack.
14 * if the order here is changed, it needs to be
15 * updated in fork.c:copy_process, signal.c:do_signal,
16 * ptrace.c and ptrace.h
17 *
18 */
20 #include <linux/linkage.h>
21 #include <linux/sys.h>
22 #include <asm/unistd.h>
23 #include <asm/errno.h>
24 #include <asm/thread_info.h>
25 #include <asm/asm-offsets.h>
27 #include <hwregs/asm/reg_map_asm.h>
28 #include <hwregs/asm/intr_vect_defs_asm.h>
30 ;; Exported functions.
31 .globl system_call
32 .globl ret_from_intr
33 .globl ret_from_fork
34 .globl resume
35 .globl multiple_interrupt
36 .globl nmi_interrupt
37 .globl spurious_interrupt
38 .globl do_sigtrap
39 .globl gdb_handle_exception
40 .globl sys_call_table
42 ; Check if preemptive kernel scheduling should be done.
43 #ifdef CONFIG_PREEMPT
44 _resume_kernel:
45 di
46 ; Load current task struct.
47 movs.w -8192, $r0 ; THREAD_SIZE = 8192
48 and.d $sp, $r0
50 addoq +TI_preempt_count, $r0, $acr
51 move.d [$acr], $r10 ; Preemption disabled?
52 bne _Rexit
53 nop
55 _need_resched:
56 addoq +TI_flags, $r0, $acr
57 move.d [$acr], $r10
58 btstq TIF_NEED_RESCHED, $r10 ; Check if need_resched is set.
59 bpl _Rexit
60 nop
62 ; Do preemptive kernel scheduling.
63 jsr preempt_schedule_irq
64 nop
66 ; Load new task struct.
67 movs.w -8192, $r0 ; THREAD_SIZE = 8192.
68 and.d $sp, $r0
70 ; One more time with new task.
71 ba _need_resched
72 nop
73 #else
74 #define _resume_kernel _Rexit
75 #endif
77 ; Called at exit from fork. schedule_tail must be called to drop
78 ; spinlock if CONFIG_PREEMPT.
79 .type ret_from_fork,@function
80 ret_from_fork:
81 jsr schedule_tail
82 nop
83 ba ret_from_sys_call
84 nop
85 .size ret_from_fork, . - ret_from_fork
87 .type ret_from_intr,@function
88 ret_from_intr:
89 ;; Check for resched if preemptive kernel, or if we're going back to
90 ;; user-mode. This test matches the user_regs(regs) macro. Don't simply
91 ;; test CCS since that doesn't necessarily reflect what mode we'll
92 ;; return into.
93 addoq +PT_ccs, $sp, $acr
94 move.d [$acr], $r0
95 btstq 16, $r0 ; User-mode flag.
96 bpl _resume_kernel
97 .size ret_from_intr, . - ret_from_intr + 2 ; +2 includes the dslot.
99 ; Note that di below is in delay slot.
100 .type _resume_userspace,@function
101 _resume_userspace:
102 di ; So need_resched and sigpending don't change.
104 movs.w -8192, $r0 ; THREAD_SIZE == 8192
105 and.d $sp, $r0
107 addoq +TI_flags, $r0, $acr ; current->work
108 move.d [$acr], $r10
109 and.d _TIF_WORK_MASK, $r10 ; Work to be done on return?
110 bne _work_pending
111 nop
112 ba _Rexit
113 nop
114 .size _resume_userspace, . - _resume_userspace
116 ;; The system_call is called by a BREAK instruction, which looks pretty
117 ;; much like any other exception.
118 ;;
119 ;; System calls can't be made from interrupts but we still stack ERP
120 ;; to have a complete stack frame.
121 ;;
122 ;; In r9 we have the wanted syscall number. Arguments come in r10,r11,r12,
123 ;; r13,mof,srp
124 ;;
125 ;; This function looks on the _surface_ like spaghetti programming, but it's
126 ;; really designed so that the fast-path does not force cache-loading of
127 ;; non-used instructions. Only the non-common cases cause the outlined code
128 ;; to run..
130 .type system_call,@function
131 system_call:
132 ;; Stack-frame similar to the irq heads, which is reversed in
133 ;; ret_from_sys_call.
135 sub.d 92, $sp ; Skip EXS and EDA.
136 movem $r13, [$sp]
137 move.d $sp, $r8
138 addq 14*4, $r8
139 move.d $acr, $r0
140 move $srs, $r1
141 move $mof, $r2
142 move $spc, $r3
143 move $ccs, $r4
144 move $srp, $r5
145 move $erp, $r6
146 subq 4, $sp
147 movem $r6, [$r8]
148 ei ; Enable interrupts while processing syscalls.
149 move.d $r10, [$sp]
151 ; Set S-bit when kernel debugging to keep hardware breakpoints active.
152 #ifdef CONFIG_ETRAX_KGDB
153 move $ccs, $r0
154 or.d (1<<9), $r0
155 move $r0, $ccs
156 #endif
158 movs.w -ENOSYS, $r0
159 addoq +PT_r10, $sp, $acr
160 move.d $r0, [$acr]
162 ;; Check if this process is syscall-traced.
163 movs.w -8192, $r0 ; THREAD_SIZE == 8192
164 and.d $sp, $r0
166 addoq +TI_flags, $r0, $acr
167 move.d [$acr], $r0
168 btstq TIF_SYSCALL_TRACE, $r0
169 bmi _syscall_trace_entry
170 nop
172 _syscall_traced:
173 ;; Check for sanity in the requested syscall number.
174 cmpu.w NR_syscalls, $r9
175 bhs ret_from_sys_call
176 lslq 2, $r9 ; Multiply by 4, in the delay slot.
178 ;; The location on the stack for the register structure is passed as a
179 ;; seventh argument. Some system calls need this.
180 move.d $sp, $r0
181 subq 4, $sp
182 move.d $r0, [$sp]
184 ;; The registers carrying parameters (R10-R13) are intact. The optional
185 ;; fifth and sixth parameters is in MOF and SRP respectively. Put them
186 ;; back on the stack.
187 subq 4, $sp
188 move $srp, [$sp]
189 subq 4, $sp
190 move $mof, [$sp]
192 ;; Actually to the system call.
193 addo.d +sys_call_table, $r9, $acr
194 move.d [$acr], $acr
195 jsr $acr
196 nop
198 addq 3*4, $sp ; Pop the mof, srp and regs parameters.
199 addoq +PT_r10, $sp, $acr
200 move.d $r10, [$acr] ; Save the return value.
202 moveq 1, $r9 ; "Parameter" to ret_from_sys_call to
203 ; show it was a sys call.
205 ;; Fall through into ret_from_sys_call to return.
207 ret_from_sys_call:
208 ;; R9 is a parameter:
209 ;; >= 1 from syscall
210 ;; 0 from irq
212 ;; Get the current task-struct pointer.
213 movs.w -8192, $r0 ; THREAD_SIZE == 8192
214 and.d $sp, $r0
216 di ; Make sure need_resched and sigpending don't change.
218 addoq +TI_flags, $r0, $acr
219 move.d [$acr], $r1
220 and.d _TIF_ALLWORK_MASK, $r1
221 bne _syscall_exit_work
222 nop
223 .size system_call, . - system_call
225 .type _Rexit,@function
226 _Rexit:
227 ;; This epilogue MUST match the prologues in multiple_interrupt, irq.h
228 ;; and ptregs.h.
229 addq 4, $sp ; Skip orig_r10.
230 movem [$sp+], $r13 ; Registers R0-R13.
231 move.d [$sp+], $acr
232 move [$sp], $srs
233 addq 4, $sp
234 move [$sp+], $mof
235 move [$sp+], $spc
236 move [$sp+], $ccs
237 move [$sp+], $srp
238 move [$sp+], $erp
239 addq 8, $sp ; Skip EXS, EDA.
240 jump $erp
241 rfe ; Restore condition code stack in delay-slot.
242 .size _Rexit, . - _Rexit
244 ;; We get here after doing a syscall if extra work might need to be done
245 ;; perform syscall exit tracing if needed.
247 .type _syscall_exit_work,@function
248 _syscall_exit_work:
249 ;; R0 contains current at this point and irq's are disabled.
251 addoq +TI_flags, $r0, $acr
252 move.d [$acr], $r1
253 btstq TIF_SYSCALL_TRACE, $r1
254 bpl _work_pending
255 nop
256 ei
257 move.d $r9, $r1 ; Preserve R9.
258 jsr do_syscall_trace
259 nop
260 move.d $r1, $r9
261 ba _resume_userspace
262 nop
263 .size _syscall_exit_work, . - _syscall_exit_work
265 .type _work_pending,@function
266 _work_pending:
267 addoq +TI_flags, $r0, $acr
268 move.d [$acr], $r10
269 btstq TIF_NEED_RESCHED, $r10 ; Need resched?
270 bpl _work_notifysig ; No, must be signal/notify.
271 nop
272 .size _work_pending, . - _work_pending
274 .type _work_resched,@function
275 _work_resched:
276 move.d $r9, $r1 ; Preserve R9.
277 jsr schedule
278 nop
279 move.d $r1, $r9
280 di
282 addoq +TI_flags, $r0, $acr
283 move.d [$acr], $r1
284 and.d _TIF_WORK_MASK, $r1 ; Ignore sycall trace counter.
285 beq _Rexit
286 nop
287 btstq TIF_NEED_RESCHED, $r1
288 bmi _work_resched ; current->work.need_resched.
289 nop
290 .size _work_resched, . - _work_resched
292 .type _work_notifysig,@function
293 _work_notifysig:
294 ;; Deal with pending signals and notify-resume requests.
296 addoq +TI_flags, $r0, $acr
297 move.d [$acr], $r12 ; The thread_info_flags parameter.
298 move.d $sp, $r11 ; The regs param.
299 jsr do_notify_resume
300 move.d $r9, $r10 ; do_notify_resume syscall/irq param.
302 ba _Rexit
303 nop
304 .size _work_notifysig, . - _work_notifysig
306 ;; We get here as a sidetrack when we've entered a syscall with the
307 ;; trace-bit set. We need to call do_syscall_trace and then continue
308 ;; with the call.
310 _syscall_trace_entry:
311 ;; PT_r10 in the frame contains -ENOSYS as required, at this point.
313 jsr do_syscall_trace
314 nop
316 ;; Now re-enter the syscall code to do the syscall itself. We need to
317 ;; restore R9 here to contain the wanted syscall, and the other
318 ;; parameter-bearing registers.
319 addoq +PT_r9, $sp, $acr
320 move.d [$acr], $r9
321 addoq +PT_orig_r10, $sp, $acr
322 move.d [$acr], $r10 ; PT_r10 is already -ENOSYS.
323 addoq +PT_r11, $sp, $acr
324 move.d [$acr], $r11
325 addoq +PT_r12, $sp, $acr
326 move.d [$acr], $r12
327 addoq +PT_r13, $sp, $acr
328 move.d [$acr], $r13
329 addoq +PT_mof, $sp, $acr
330 move [$acr], $mof
331 addoq +PT_srp, $sp, $acr
332 move [$acr], $srp
334 ba _syscall_traced
335 nop
337 ;; Resume performs the actual task-switching, by switching stack
338 ;; pointers. Input arguments are:
339 ;;
340 ;; R10 = prev
341 ;; R11 = next
342 ;; R12 = thread offset in task struct.
343 ;;
344 ;; Returns old current in R10.
346 .type resume,@function
347 resume:
348 subq 4, $sp ; Make space for srp.
350 add.d $r12, $r10 ; R10 = current tasks tss.
351 addoq +THREAD_ccs, $r10, $acr
352 move $srp, [$sp] ; Keep old/new PC on the stack.
353 move $ccs, [$acr] ; Save IRQ enable state.
354 di
356 addoq +THREAD_usp, $r10, $acr
357 subq 10*4, $sp ; Make room for R9.
358 move $usp, [$acr] ; Save user-mode stackpointer.
360 ;; See copy_thread for the reason why register R9 is saved.
361 movem $r9, [$sp] ; Save non-scratch registers and R9.
363 addoq +THREAD_ksp, $r10, $acr
364 move.d $sp, $r10 ; Return last running task in R10.
365 move.d $sp, [$acr] ; Save kernel SP for old task.
367 and.d -8192, $r10 ; Get thread_info from stackpointer.
368 addoq +TI_task, $r10, $acr
369 add.d $r12, $r11 ; Find the new tasks tss.
370 move.d [$acr], $r10 ; Get task.
371 addoq +THREAD_ksp, $r11, $acr
372 move.d [$acr], $sp ; Switch to new stackframe.
373 addoq +THREAD_usp, $r11, $acr
374 movem [$sp+], $r9 ; Restore non-scratch registers and R9.
376 move [$acr], $usp ; Restore user-mode stackpointer.
378 addoq +THREAD_ccs, $r11, $acr
379 move.d [$sp+], $r11
380 jump $r11 ; Restore PC.
381 move [$acr], $ccs ; Restore IRQ enable status.
382 .size resume, . - resume
384 nmi_interrupt:
386 ;; If we receive a watchdog interrupt while it is not expected, then set
387 ;; up a canonical frame and dump register contents before dying.
389 ;; This prologue MUST match the one in irq.h and the struct in ptregs.h!
390 subq 12, $sp ; Skip EXS, EDA.
391 move $nrp, [$sp]
392 subq 4, $sp
393 move $srp, [$sp]
394 subq 4, $sp
395 move $ccs, [$sp]
396 subq 4, $sp
397 move $spc, [$sp]
398 subq 4, $sp
399 move $mof, [$sp]
400 subq 4, $sp
401 move $srs, [$sp]
402 subq 4, $sp
403 move.d $acr, [$sp]
404 subq 14*4, $sp ; Make room for R0-R13.
405 movem $r13, [$sp] ; Push R0-R13.
406 subq 4, $sp
407 move.d $r10, [$sp] ; Push orig_r10.
408 move.d REG_ADDR(intr_vect, regi_irq, r_nmi), $r0
409 move.d [$r0], $r0
410 btstq REG_BIT(intr_vect, r_nmi, watchdog), $r0
411 bpl 1f
412 nop
413 jsr handle_watchdog_bite ; In time.c.
414 move.d $sp, $r10 ; Pointer to registers
415 1: btstq REG_BIT(intr_vect, r_nmi, ext), $r0
416 bpl 1f
417 nop
418 jsr handle_nmi
419 move.d $sp, $r10 ; Pointer to registers
420 1: addq 4, $sp ; Skip orig_r10
421 movem [$sp+], $r13
422 move.d [$sp+], $acr
423 move [$sp], $srs
424 addq 4, $sp
425 move [$sp+], $mof
426 move [$sp+], $spc
427 move [$sp+], $ccs
428 move [$sp+], $srp
429 move [$sp+], $nrp
430 addq 8, $sp ; Skip EXS, EDA.
431 jump $nrp
432 rfn
434 .comm cause_of_death, 4 ;; Don't declare this anywhere.
436 spurious_interrupt:
437 di
438 jump hard_reset_now
439 nop
441 ;; This handles the case when multiple interrupts arrive at the same
442 ;; time. Jump to the first set interrupt bit in a priotiry fashion. The
443 ;; hardware will call the unserved interrupts after the handler
444 ;; finishes.
445 .type multiple_interrupt, @function
446 multiple_interrupt:
447 ;; This prologue MUST match the one in irq.h and the struct in ptregs.h!
448 subq 12, $sp ; Skip EXS, EDA.
449 move $erp, [$sp]
450 subq 4, $sp
451 move $srp, [$sp]
452 subq 4, $sp
453 move $ccs, [$sp]
454 subq 4, $sp
455 move $spc, [$sp]
456 subq 4, $sp
457 move $mof, [$sp]
458 subq 4, $sp
459 move $srs, [$sp]
460 subq 4, $sp
461 move.d $acr, [$sp]
462 subq 14*4, $sp ; Make room for R0-R13.
463 movem $r13, [$sp] ; Push R0-R13.
464 subq 4, $sp
465 move.d $r10, [$sp] ; Push orig_r10.
467 ; Set S-bit when kernel debugging to keep hardware breakpoints active.
468 #ifdef CONFIG_ETRAX_KGDB
469 move $ccs, $r0
470 or.d (1<<9), $r0
471 move $r0, $ccs
472 #endif
474 jsr crisv32_do_multiple
475 move.d $sp, $r10
476 jump ret_from_intr
477 nop
478 .size multiple_interrupt, . - multiple_interrupt
480 do_sigtrap:
481 ;; Sigtraps the process that executed the BREAK instruction. Creates a
482 ;; frame that Rexit expects.
483 subq 4, $sp
484 move $eda, [$sp]
485 subq 4, $sp
486 move $exs, [$sp]
487 subq 4, $sp
488 move $erp, [$sp]
489 subq 4, $sp
490 move $srp, [$sp]
491 subq 4, $sp
492 move $ccs, [$sp]
493 subq 4, $sp
494 move $spc, [$sp]
495 subq 4, $sp
496 move $mof, [$sp]
497 subq 4, $sp
498 move $srs, [$sp]
499 subq 4, $sp
500 move.d $acr, [$sp]
501 di ; Need to disable irq's at this point.
502 subq 14*4, $sp ; Make room for r0-r13.
503 movem $r13, [$sp] ; Push the r0-r13 registers.
504 subq 4, $sp
505 move.d $r10, [$sp] ; Push orig_r10.
507 movs.w -8192, $r9 ; THREAD_SIZE == 8192
508 and.d $sp, $r9
510 ;; thread_info as first parameter
511 move.d $r9, $r10
512 moveq 5, $r11 ; SIGTRAP as second argument.
513 jsr ugdb_trap_user
514 nop
515 jump ret_from_intr ; Use the return routine for interrupts.
516 nop
518 gdb_handle_exception:
519 subq 4, $sp
520 move.d $r0, [$sp]
521 #ifdef CONFIG_ETRAX_KGDB
522 move $ccs, $r0 ; U-flag not affected by previous insns.
523 btstq 16, $r0 ; Test the U-flag.
524 bmi _ugdb_handle_exception ; Go to user mode debugging.
525 nop ; Empty delay-slot (cannot pop R0 here).
526 ba kgdb_handle_exception ; Go to kernel debugging.
527 move.d [$sp+], $r0 ; Restore R0 in delay slot.
528 #endif
530 _ugdb_handle_exception:
531 ba do_sigtrap ; SIGTRAP the offending process.
532 move.d [$sp+], $r0 ; Restore R0 in delay slot.
534 .global kernel_execve
535 .type kernel_execve,@function
536 kernel_execve:
537 move.d __NR_execve, $r9
538 break 13
539 ret
540 nop
541 .size kernel_execve, . - kernel_execve
543 .data
545 .section .rodata,"a"
546 sys_call_table:
547 .long sys_restart_syscall ; 0 - old "setup()" system call, used
548 ; for restarting.
549 .long sys_exit
550 .long sys_fork
551 .long sys_read
552 .long sys_write
553 .long sys_open /* 5 */
554 .long sys_close
555 .long sys_waitpid
556 .long sys_creat
557 .long sys_link
558 .long sys_unlink /* 10 */
559 .long sys_execve
560 .long sys_chdir
561 .long sys_time
562 .long sys_mknod
563 .long sys_chmod /* 15 */
564 .long sys_lchown16
565 .long sys_ni_syscall /* old break syscall holder */
566 .long sys_stat
567 .long sys_lseek
568 .long sys_getpid /* 20 */
569 .long sys_mount
570 .long sys_oldumount
571 .long sys_setuid16
572 .long sys_getuid16
573 .long sys_stime /* 25 */
574 .long sys_ptrace
575 .long sys_alarm
576 .long sys_fstat
577 .long sys_pause
578 .long sys_utime /* 30 */
579 .long sys_ni_syscall /* old stty syscall holder */
580 .long sys_ni_syscall /* old gtty syscall holder */
581 .long sys_access
582 .long sys_nice
583 .long sys_ni_syscall /* 35 old ftime syscall holder */
584 .long sys_sync
585 .long sys_kill
586 .long sys_rename
587 .long sys_mkdir
588 .long sys_rmdir /* 40 */
589 .long sys_dup
590 .long sys_pipe
591 .long sys_times
592 .long sys_ni_syscall /* old prof syscall holder */
593 .long sys_brk /* 45 */
594 .long sys_setgid16
595 .long sys_getgid16
596 .long sys_signal
597 .long sys_geteuid16
598 .long sys_getegid16 /* 50 */
599 .long sys_acct
600 .long sys_umount /* recycled never used phys( */
601 .long sys_ni_syscall /* old lock syscall holder */
602 .long sys_ioctl
603 .long sys_fcntl /* 55 */
604 .long sys_ni_syscall /* old mpx syscall holder */
605 .long sys_setpgid
606 .long sys_ni_syscall /* old ulimit syscall holder */
607 .long sys_ni_syscall /* old sys_olduname holder */
608 .long sys_umask /* 60 */
609 .long sys_chroot
610 .long sys_ustat
611 .long sys_dup2
612 .long sys_getppid
613 .long sys_getpgrp /* 65 */
614 .long sys_setsid
615 .long sys_sigaction
616 .long sys_sgetmask
617 .long sys_ssetmask
618 .long sys_setreuid16 /* 70 */
619 .long sys_setregid16
620 .long sys_sigsuspend
621 .long sys_sigpending
622 .long sys_sethostname
623 .long sys_setrlimit /* 75 */
624 .long sys_old_getrlimit
625 .long sys_getrusage
626 .long sys_gettimeofday
627 .long sys_settimeofday
628 .long sys_getgroups16 /* 80 */
629 .long sys_setgroups16
630 .long sys_select /* was old_select in Linux/E100 */
631 .long sys_symlink
632 .long sys_lstat
633 .long sys_readlink /* 85 */
634 .long sys_uselib
635 .long sys_swapon
636 .long sys_reboot
637 .long sys_old_readdir
638 .long sys_old_mmap /* 90 */
639 .long sys_munmap
640 .long sys_truncate
641 .long sys_ftruncate
642 .long sys_fchmod
643 .long sys_fchown16 /* 95 */
644 .long sys_getpriority
645 .long sys_setpriority
646 .long sys_ni_syscall /* old profil syscall holder */
647 .long sys_statfs
648 .long sys_fstatfs /* 100 */
649 .long sys_ni_syscall /* sys_ioperm in i386 */
650 .long sys_socketcall
651 .long sys_syslog
652 .long sys_setitimer
653 .long sys_getitimer /* 105 */
654 .long sys_newstat
655 .long sys_newlstat
656 .long sys_newfstat
657 .long sys_ni_syscall /* old sys_uname holder */
658 .long sys_ni_syscall /* sys_iopl in i386 */
659 .long sys_vhangup
660 .long sys_ni_syscall /* old "idle" system call */
661 .long sys_ni_syscall /* vm86old in i386 */
662 .long sys_wait4
663 .long sys_swapoff /* 115 */
664 .long sys_sysinfo
665 .long sys_ipc
666 .long sys_fsync
667 .long sys_sigreturn
668 .long sys_clone /* 120 */
669 .long sys_setdomainname
670 .long sys_newuname
671 .long sys_ni_syscall /* sys_modify_ldt */
672 .long sys_adjtimex
673 .long sys_mprotect /* 125 */
674 .long sys_sigprocmask
675 .long sys_ni_syscall /* old "create_module" */
676 .long sys_init_module
677 .long sys_delete_module
678 .long sys_ni_syscall /* 130: old "get_kernel_syms" */
679 .long sys_quotactl
680 .long sys_getpgid
681 .long sys_fchdir
682 .long sys_bdflush
683 .long sys_sysfs /* 135 */
684 .long sys_personality
685 .long sys_ni_syscall /* for afs_syscall */
686 .long sys_setfsuid16
687 .long sys_setfsgid16
688 .long sys_llseek /* 140 */
689 .long sys_getdents
690 .long sys_select
691 .long sys_flock
692 .long sys_msync
693 .long sys_readv /* 145 */
694 .long sys_writev
695 .long sys_getsid
696 .long sys_fdatasync
697 .long sys_sysctl
698 .long sys_mlock /* 150 */
699 .long sys_munlock
700 .long sys_mlockall
701 .long sys_munlockall
702 .long sys_sched_setparam
703 .long sys_sched_getparam /* 155 */
704 .long sys_sched_setscheduler
705 .long sys_sched_getscheduler
706 .long sys_sched_yield
707 .long sys_sched_get_priority_max
708 .long sys_sched_get_priority_min /* 160 */
709 .long sys_sched_rr_get_interval
710 .long sys_nanosleep
711 .long sys_mremap
712 .long sys_setresuid16
713 .long sys_getresuid16 /* 165 */
714 .long sys_ni_syscall /* sys_vm86 */
715 .long sys_ni_syscall /* Old sys_query_module */
716 .long sys_poll
717 .long sys_nfsservctl
718 .long sys_setresgid16 /* 170 */
719 .long sys_getresgid16
720 .long sys_prctl
721 .long sys_rt_sigreturn
722 .long sys_rt_sigaction
723 .long sys_rt_sigprocmask /* 175 */
724 .long sys_rt_sigpending
725 .long sys_rt_sigtimedwait
726 .long sys_rt_sigqueueinfo
727 .long sys_rt_sigsuspend
728 .long sys_pread64 /* 180 */
729 .long sys_pwrite64
730 .long sys_chown16
731 .long sys_getcwd
732 .long sys_capget
733 .long sys_capset /* 185 */
734 .long sys_sigaltstack
735 .long sys_sendfile
736 .long sys_ni_syscall /* streams1 */
737 .long sys_ni_syscall /* streams2 */
738 .long sys_vfork /* 190 */
739 .long sys_getrlimit
740 .long sys_mmap2
741 .long sys_truncate64
742 .long sys_ftruncate64
743 .long sys_stat64 /* 195 */
744 .long sys_lstat64
745 .long sys_fstat64
746 .long sys_lchown
747 .long sys_getuid
748 .long sys_getgid /* 200 */
749 .long sys_geteuid
750 .long sys_getegid
751 .long sys_setreuid
752 .long sys_setregid
753 .long sys_getgroups /* 205 */
754 .long sys_setgroups
755 .long sys_fchown
756 .long sys_setresuid
757 .long sys_getresuid
758 .long sys_setresgid /* 210 */
759 .long sys_getresgid
760 .long sys_chown
761 .long sys_setuid
762 .long sys_setgid
763 .long sys_setfsuid /* 215 */
764 .long sys_setfsgid
765 .long sys_pivot_root
766 .long sys_mincore
767 .long sys_madvise
768 .long sys_getdents64 /* 220 */
769 .long sys_fcntl64
770 .long sys_ni_syscall /* reserved for TUX */
771 .long sys_ni_syscall
772 .long sys_gettid
773 .long sys_readahead /* 225 */
774 .long sys_setxattr
775 .long sys_lsetxattr
776 .long sys_fsetxattr
777 .long sys_getxattr
778 .long sys_lgetxattr /* 230 */
779 .long sys_fgetxattr
780 .long sys_listxattr
781 .long sys_llistxattr
782 .long sys_flistxattr
783 .long sys_removexattr /* 235 */
784 .long sys_lremovexattr
785 .long sys_fremovexattr
786 .long sys_tkill
787 .long sys_sendfile64
788 .long sys_futex /* 240 */
789 .long sys_sched_setaffinity
790 .long sys_sched_getaffinity
791 .long sys_ni_syscall /* sys_set_thread_area */
792 .long sys_ni_syscall /* sys_get_thread_area */
793 .long sys_io_setup /* 245 */
794 .long sys_io_destroy
795 .long sys_io_getevents
796 .long sys_io_submit
797 .long sys_io_cancel
798 .long sys_fadvise64 /* 250 */
799 .long sys_ni_syscall
800 .long sys_exit_group
801 .long sys_lookup_dcookie
802 .long sys_epoll_create
803 .long sys_epoll_ctl /* 255 */
804 .long sys_epoll_wait
805 .long sys_remap_file_pages
806 .long sys_set_tid_address
807 .long sys_timer_create
808 .long sys_timer_settime /* 260 */
809 .long sys_timer_gettime
810 .long sys_timer_getoverrun
811 .long sys_timer_delete
812 .long sys_clock_settime
813 .long sys_clock_gettime /* 265 */
814 .long sys_clock_getres
815 .long sys_clock_nanosleep
816 .long sys_statfs64
817 .long sys_fstatfs64
818 .long sys_tgkill /* 270 */
819 .long sys_utimes
820 .long sys_fadvise64_64
821 .long sys_ni_syscall /* sys_vserver */
822 .long sys_ni_syscall /* sys_mbind */
823 .long sys_ni_syscall /* 275 sys_get_mempolicy */
824 .long sys_ni_syscall /* sys_set_mempolicy */
825 .long sys_mq_open
826 .long sys_mq_unlink
827 .long sys_mq_timedsend
828 .long sys_mq_timedreceive /* 280 */
829 .long sys_mq_notify
830 .long sys_mq_getsetattr
831 .long sys_ni_syscall /* reserved for kexec */
832 .long sys_waitid
833 .long sys_ni_syscall /* 285 */ /* available */
834 .long sys_add_key
835 .long sys_request_key
836 .long sys_keyctl
837 .long sys_ioprio_set
838 .long sys_ioprio_get /* 290 */
839 .long sys_inotify_init
840 .long sys_inotify_add_watch
841 .long sys_inotify_rm_watch
842 .long sys_migrate_pages
843 .long sys_openat /* 295 */
844 .long sys_mkdirat
845 .long sys_mknodat
846 .long sys_fchownat
847 .long sys_futimesat
848 .long sys_fstatat64 /* 300 */
849 .long sys_unlinkat
850 .long sys_renameat
851 .long sys_linkat
852 .long sys_symlinkat
853 .long sys_readlinkat /* 305 */
854 .long sys_fchmodat
855 .long sys_faccessat
856 .long sys_pselect6
857 .long sys_ppoll
858 .long sys_unshare /* 310 */
859 .long sys_set_robust_list
860 .long sys_get_robust_list
861 .long sys_splice
862 .long sys_sync_file_range
863 .long sys_tee /* 315 */
864 .long sys_vmsplice
865 .long sys_move_pages
866 .long sys_getcpu
867 .long sys_epoll_pwait
868 .long sys_utimensat /* 320 */
869 .long sys_signalfd
870 .long sys_timerfd_create
871 .long sys_eventfd
872 .long sys_fallocate
873 .long sys_timerfd_settime /* 325 */
874 .long sys_timerfd_gettime
875 .long sys_signalfd4
876 .long sys_eventfd2
877 .long sys_epoll_create1
878 .long sys_dup3 /* 330 */
879 .long sys_pipe2
880 .long sys_inotify_init1
881 .long sys_preadv
882 .long sys_pwritev
884 /*
885 * NOTE!! This doesn't have to be exact - we just have
886 * to make sure we have _enough_ of the "sys_ni_syscall"
887 * entries. Don't panic if you notice that this hasn't
888 * been shrunk every time we add a new system call.
889 */
891 .rept NR_syscalls - (.-sys_call_table) / 4
892 .long sys_ni_syscall
893 .endr