xref: /linux/arch/mips/kernel/scall32-o32.S (revision 5e8d780d745c1619aba81fe7166c5a4b5cad2b84) 
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License.  See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01, 02 by Ralf Baechle
7 * Copyright (C) 2001 MIPS Technologies, Inc.
8 * Copyright (C) 2004 Thiemo Seufer
9 */
10#include <linux/config.h>
11#include <linux/errno.h>
12#include <asm/asm.h>
13#include <asm/asmmacro.h>
14#include <asm/mipsregs.h>
15#include <asm/regdef.h>
16#include <asm/stackframe.h>
17#include <asm/isadep.h>
18#include <asm/sysmips.h>
19#include <asm/thread_info.h>
20#include <asm/unistd.h>
21#include <asm/war.h>
22#include <asm/asm-offsets.h>
23
24/* Highest syscall used of any syscall flavour */
25#define MAX_SYSCALL_NO	__NR_O32_Linux + __NR_O32_Linux_syscalls
26
27	.align  5
28NESTED(handle_sys, PT_SIZE, sp)
29	.set	noat
30	SAVE_SOME
31	STI
32	.set	at
33
34	lw	t1, PT_EPC(sp)		# skip syscall on return
35
36#if defined(CONFIG_BINFMT_IRIX)
37	sltiu	t0, v0, MAX_SYSCALL_NO + 1 # check syscall number
38#else
39	subu	v0, v0, __NR_O32_Linux	# check syscall number
40	sltiu	t0, v0, __NR_O32_Linux_syscalls + 1
41#endif
42	addiu	t1, 4			# skip to next instruction
43	sw	t1, PT_EPC(sp)
44	beqz	t0, illegal_syscall
45
46	sll	t0, v0, 3
47	la	t1, sys_call_table
48	addu	t1, t0
49	lw	t2, (t1)		# syscall routine
50	lw	t3, 4(t1)		# >= 0 if we need stack arguments
51	beqz	t2, illegal_syscall
52
53	sw	a3, PT_R26(sp)		# save a3 for syscall restarting
54	bgez	t3, stackargs
55
56stack_done:
57	lw	t0, TI_FLAGS($28)	# syscall tracing enabled?
58	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
59	and	t0, t1
60	bnez	t0, syscall_trace_entry	# -> yes
61
62	jalr	t2			# Do The Real Thing (TM)
63
64	li	t0, -EMAXERRNO - 1	# error?
65	sltu	t0, t0, v0
66	sw	t0, PT_R7(sp)		# set error flag
67	beqz	t0, 1f
68
69	negu	v0			# error
70	sw	v0, PT_R0(sp)		# set flag for syscall
71					# restarting
721:	sw	v0, PT_R2(sp)		# result
73
74o32_syscall_exit:
75	local_irq_disable		# make sure need_resched and
76					# signals dont change between
77					# sampling and return
78	lw	a2, TI_FLAGS($28)	# current->work
79	li	t0, _TIF_ALLWORK_MASK
80	and	t0, a2
81	bnez	t0, o32_syscall_exit_work
82
83	j	restore_partial
84
85o32_syscall_exit_work:
86	j	syscall_exit_work_partial
87
88/* ------------------------------------------------------------------------ */
89
90syscall_trace_entry:
91	SAVE_STATIC
92	move	s0, t2
93	move	a0, sp
94	li	a1, 0
95	jal	do_syscall_trace
96
97	move	t0, s0
98	RESTORE_STATIC
99	lw	a0, PT_R4(sp)		# Restore argument registers
100	lw	a1, PT_R5(sp)
101	lw	a2, PT_R6(sp)
102	lw	a3, PT_R7(sp)
103	jalr	t0
104
105	li	t0, -EMAXERRNO - 1	# error?
106	sltu	t0, t0, v0
107	sw	t0, PT_R7(sp)		# set error flag
108	beqz	t0, 1f
109
110	negu	v0			# error
111	sw	v0, PT_R0(sp)		# set flag for syscall
112					# restarting
1131:	sw	v0, PT_R2(sp)		# result
114
115	j	syscall_exit
116
117/* ------------------------------------------------------------------------ */
118
119	/*
120	 * More than four arguments.  Try to deal with it by copying the
121	 * stack arguments from the user stack to the kernel stack.
122	 * This Sucks (TM).
123	 */
124stackargs:
125	lw	t0, PT_R29(sp)		# get old user stack pointer
126
127	/*
128	 * We intentionally keep the kernel stack a little below the top of
129	 * userspace so we don't have to do a slower byte accurate check here.
130	 */
131	lw	t5, TI_ADDR_LIMIT($28)
132	addu	t4, t0, 32
133	and	t5, t4
134	bltz	t5, bad_stack		# -> sp is bad
135
136	/* Ok, copy the args from the luser stack to the kernel stack.
137	 * t3 is the precomputed number of instruction bytes needed to
138	 * load or store arguments 6-8.
139	 */
140
141	la	t1, 5f			# load up to 3 arguments
142	subu	t1, t3
1431:	lw	t5, 16(t0)		# argument #5 from usp
144	.set    push
145	.set    noreorder
146	.set	nomacro
147	jr	t1
148	 addiu	t1, 6f - 5f
149
1502:	lw	t8, 28(t0)		# argument #8 from usp
1513:	lw	t7, 24(t0)		# argument #7 from usp
1524:	lw	t6, 20(t0)		# argument #6 from usp
1535:	jr	t1
154	 sw	t5, 16(sp)		# argument #5 to ksp
155
156	sw	t8, 28(sp)		# argument #8 to ksp
157	sw	t7, 24(sp)		# argument #7 to ksp
158	sw	t6, 20(sp)		# argument #6 to ksp
1596:	j	stack_done		# go back
160	 nop
161	.set	pop
162
163	.section __ex_table,"a"
164	PTR	1b,bad_stack
165	PTR	2b,bad_stack
166	PTR	3b,bad_stack
167	PTR	4b,bad_stack
168	.previous
169
170	/*
171	 * The stackpointer for a call with more than 4 arguments is bad.
172	 * We probably should handle this case a bit more drastic.
173	 */
174bad_stack:
175	negu	v0				# error
176	sw	v0, PT_R0(sp)
177	sw	v0, PT_R2(sp)
178	li	t0, 1				# set error flag
179	sw	t0, PT_R7(sp)
180	j	o32_syscall_exit
181
182	/*
183	 * The system call does not exist in this kernel
184	 */
185illegal_syscall:
186	li	v0, -ENOSYS			# error
187	sw	v0, PT_R2(sp)
188	li	t0, 1				# set error flag
189	sw	t0, PT_R7(sp)
190	j	o32_syscall_exit
191	END(handle_sys)
192
193	LEAF(mips_atomic_set)
194	andi	v0, a1, 3			# must be word aligned
195	bnez	v0, bad_alignment
196
197	lw	v1, TI_ADDR_LIMIT($28)		# in legal address range?
198	addiu	a0, a1, 4
199	or	a0, a0, a1
200	and	a0, a0, v1
201	bltz	a0, bad_address
202
203#ifdef CONFIG_CPU_HAS_LLSC
204	/* Ok, this is the ll/sc case.  World is sane :-)  */
2051:	ll	v0, (a1)
206	move	a0, a2
2072:	sc	a0, (a1)
208#if R10000_LLSC_WAR
209	beqzl	a0, 1b
210#else
211	beqz	a0, 1b
212#endif
213
214	.section __ex_table,"a"
215	PTR	1b, bad_stack
216	PTR	2b, bad_stack
217	.previous
218#else
219	sw	a1, 16(sp)
220	sw	a2, 20(sp)
221
222	move	a0, sp
223	move	a2, a1
224	li	a1, 1
225	jal	do_page_fault
226
227	lw	a1, 16(sp)
228	lw	a2, 20(sp)
229
230	/*
231	 * At this point the page should be readable and writable unless
232	 * there was no more memory available.
233	 */
2341:	lw	v0, (a1)
2352:	sw	a2, (a1)
236
237	.section __ex_table,"a"
238	PTR	1b, no_mem
239	PTR	2b, no_mem
240	.previous
241#endif
242
243	sw	zero, PT_R7(sp)		# success
244	sw	v0, PT_R2(sp)		# result
245
246	j	o32_syscall_exit	# continue like a normal syscall
247
248no_mem:	li	v0, -ENOMEM
249	jr	ra
250
251bad_address:
252	li	v0, -EFAULT
253	jr	ra
254
255bad_alignment:
256	li	v0, -EINVAL
257	jr	ra
258	END(mips_atomic_set)
259
260	LEAF(sys_sysmips)
261	beq	a0, MIPS_ATOMIC_SET, mips_atomic_set
262	j	_sys_sysmips
263	END(sys_sysmips)
264
265	LEAF(sys_syscall)
266#if defined(CONFIG_BINFMT_IRIX)
267	sltiu	v0, a0, MAX_SYSCALL_NO + 1 # check syscall number
268#else
269	subu	t0, a0, __NR_O32_Linux	# check syscall number
270	sltiu	v0, t0, __NR_O32_Linux_syscalls + 1
271#endif
272	sll	t1, t0, 3
273	beqz	v0, einval
274
275	lw	t2, sys_call_table(t1)		# syscall routine
276
277#if defined(CONFIG_BINFMT_IRIX)
278	li	v1, 4000			# nr of sys_syscall
279#else
280	li	v1, 4000 - __NR_O32_Linux	# index of sys_syscall
281#endif
282	beq	t0, v1, einval			# do not recurse
283
284	/* Some syscalls like execve get their arguments from struct pt_regs
285	   and claim zero arguments in the syscall table. Thus we have to
286	   assume the worst case and shuffle around all potential arguments.
287	   If you want performance, don't use indirect syscalls. */
288
289	move	a0, a1				# shift argument registers
290	move	a1, a2
291	move	a2, a3
292	lw	a3, 16(sp)
293	lw	t4, 20(sp)
294	lw	t5, 24(sp)
295	lw	t6, 28(sp)
296	sw	t4, 16(sp)
297	sw	t5, 20(sp)
298	sw	t6, 24(sp)
299	sw	a0, PT_R4(sp)			# .. and push back a0 - a3, some
300	sw	a1, PT_R5(sp)			# syscalls expect them there
301	sw	a2, PT_R6(sp)
302	sw	a3, PT_R7(sp)
303	sw	a3, PT_R26(sp)			# update a3 for syscall restarting
304	jr	t2
305	/* Unreached */
306
307einval:	li	v0, -EINVAL
308	jr	ra
309	END(sys_syscall)
310
311	.macro	fifty ptr, nargs, from=1, to=50
312	sys	\ptr		\nargs
313	.if	\to-\from
314	fifty	\ptr,\nargs,"(\from+1)",\to
315	.endif
316	.endm
317
318	.macro	mille ptr, nargs, from=1, to=20
319	fifty	\ptr,\nargs
320	.if	\to-\from
321	mille	\ptr,\nargs,"(\from+1)",\to
322	.endif
323	.endm
324
325	.macro	syscalltable
326#if defined(CONFIG_BINFMT_IRIX)
327	mille	sys_ni_syscall		0	/*    0 -  999 SVR4 flavour */
328	mille	sys_ni_syscall		0	/* 1000 - 1999 32-bit IRIX */
329	mille	sys_ni_syscall		0	/* 2000 - 2999 BSD43 flavour */
330	mille	sys_ni_syscall		0	/* 3000 - 3999 POSIX flavour */
331#endif
332
333	sys	sys_syscall		8	/* 4000 */
334	sys	sys_exit		1
335	sys	sys_fork		0
336	sys	sys_read		3
337	sys	sys_write		3
338	sys	sys_open		3	/* 4005 */
339	sys	sys_close		1
340	sys	sys_waitpid		3
341	sys	sys_creat		2
342	sys	sys_link		2
343	sys	sys_unlink		1	/* 4010 */
344	sys	sys_execve		0
345	sys	sys_chdir		1
346	sys	sys_time		1
347	sys	sys_mknod		3
348	sys	sys_chmod		2	/* 4015 */
349	sys	sys_lchown		3
350	sys	sys_ni_syscall		0
351	sys	sys_ni_syscall		0	/* was sys_stat */
352	sys	sys_lseek		3
353	sys	sys_getpid		0	/* 4020 */
354	sys	sys_mount		5
355	sys	sys_oldumount		1
356	sys	sys_setuid		1
357	sys	sys_getuid		0
358	sys	sys_stime		1	/* 4025 */
359	sys	sys_ptrace		4
360	sys	sys_alarm		1
361	sys	sys_ni_syscall		0	/* was sys_fstat */
362	sys	sys_pause		0
363	sys	sys_utime		2	/* 4030 */
364	sys	sys_ni_syscall		0
365	sys	sys_ni_syscall		0
366	sys	sys_access		2
367	sys	sys_nice		1
368	sys	sys_ni_syscall		0	/* 4035 */
369	sys	sys_sync		0
370	sys	sys_kill		2
371	sys	sys_rename		2
372	sys	sys_mkdir		2
373	sys	sys_rmdir		1	/* 4040 */
374	sys	sys_dup			1
375	sys	sys_pipe		0
376	sys	sys_times		1
377	sys	sys_ni_syscall		0
378	sys	sys_brk			1	/* 4045 */
379	sys	sys_setgid		1
380	sys	sys_getgid		0
381	sys	sys_ni_syscall		0	/* was signal(2) */
382	sys	sys_geteuid		0
383	sys	sys_getegid		0	/* 4050 */
384	sys	sys_acct		1
385	sys	sys_umount		2
386	sys	sys_ni_syscall		0
387	sys	sys_ioctl		3
388	sys	sys_fcntl		3	/* 4055 */
389	sys	sys_ni_syscall		2
390	sys	sys_setpgid		2
391	sys	sys_ni_syscall		0
392	sys	sys_olduname		1
393	sys	sys_umask		1	/* 4060 */
394	sys	sys_chroot		1
395	sys	sys_ustat		2
396	sys	sys_dup2		2
397	sys	sys_getppid		0
398	sys	sys_getpgrp		0	/* 4065 */
399	sys	sys_setsid		0
400	sys	sys_sigaction		3
401	sys	sys_sgetmask		0
402	sys	sys_ssetmask		1
403	sys	sys_setreuid		2	/* 4070 */
404	sys	sys_setregid		2
405	sys	sys_sigsuspend		0
406	sys	sys_sigpending		1
407	sys	sys_sethostname		2
408	sys	sys_setrlimit		2	/* 4075 */
409	sys	sys_getrlimit		2
410	sys	sys_getrusage		2
411	sys	sys_gettimeofday	2
412	sys	sys_settimeofday	2
413	sys	sys_getgroups		2	/* 4080 */
414	sys	sys_setgroups		2
415	sys	sys_ni_syscall		0	/* old_select */
416	sys	sys_symlink		2
417	sys	sys_ni_syscall		0	/* was sys_lstat */
418	sys	sys_readlink		3	/* 4085 */
419	sys	sys_uselib		1
420	sys	sys_swapon		2
421	sys	sys_reboot		3
422	sys	old_readdir		3
423	sys	old_mmap		6	/* 4090 */
424	sys	sys_munmap		2
425	sys	sys_truncate		2
426	sys	sys_ftruncate		2
427	sys	sys_fchmod		2
428	sys	sys_fchown		3	/* 4095 */
429	sys	sys_getpriority		2
430	sys	sys_setpriority		3
431	sys	sys_ni_syscall		0
432	sys	sys_statfs		2
433	sys	sys_fstatfs		2	/* 4100 */
434	sys	sys_ni_syscall		0	/* was ioperm(2) */
435	sys	sys_socketcall		2
436	sys	sys_syslog		3
437	sys	sys_setitimer		3
438	sys	sys_getitimer		2	/* 4105 */
439	sys	sys_newstat		2
440	sys	sys_newlstat		2
441	sys	sys_newfstat		2
442	sys	sys_uname		1
443	sys	sys_ni_syscall		0	/* 4110 was iopl(2) */
444	sys	sys_vhangup		0
445	sys	sys_ni_syscall		0	/* was sys_idle() */
446	sys	sys_ni_syscall		0	/* was sys_vm86 */
447	sys	sys_wait4		4
448	sys	sys_swapoff		1	/* 4115 */
449	sys	sys_sysinfo		1
450	sys	sys_ipc			6
451	sys	sys_fsync		1
452	sys	sys_sigreturn		0
453	sys	sys_clone		0	/* 4120 */
454	sys	sys_setdomainname	2
455	sys	sys_newuname		1
456	sys	sys_ni_syscall		0	/* sys_modify_ldt */
457	sys	sys_adjtimex		1
458	sys	sys_mprotect		3	/* 4125 */
459	sys	sys_sigprocmask		3
460	sys	sys_ni_syscall		0	/* was create_module */
461	sys	sys_init_module		5
462	sys	sys_delete_module	1
463	sys	sys_ni_syscall		0	/* 4130	was get_kernel_syms */
464	sys	sys_quotactl		4
465	sys	sys_getpgid		1
466	sys	sys_fchdir		1
467	sys	sys_bdflush		2
468	sys	sys_sysfs		3	/* 4135 */
469	sys	sys_personality		1
470	sys	sys_ni_syscall		0	/* for afs_syscall */
471	sys	sys_setfsuid		1
472	sys	sys_setfsgid		1
473	sys	sys_llseek		5	/* 4140 */
474	sys	sys_getdents		3
475	sys	sys_select		5
476	sys	sys_flock		2
477	sys	sys_msync		3
478	sys	sys_readv		3	/* 4145 */
479	sys	sys_writev		3
480	sys	sys_cacheflush		3
481	sys	sys_cachectl		3
482	sys	sys_sysmips		4
483	sys	sys_ni_syscall		0	/* 4150 */
484	sys	sys_getsid		1
485	sys	sys_fdatasync		1
486	sys	sys_sysctl		1
487	sys	sys_mlock		2
488	sys	sys_munlock		2	/* 4155 */
489	sys	sys_mlockall		1
490	sys	sys_munlockall		0
491	sys	sys_sched_setparam	2
492	sys	sys_sched_getparam	2
493	sys	sys_sched_setscheduler	3	/* 4160 */
494	sys	sys_sched_getscheduler	1
495	sys	sys_sched_yield		0
496	sys	sys_sched_get_priority_max 1
497	sys	sys_sched_get_priority_min 1
498	sys	sys_sched_rr_get_interval 2	/* 4165 */
499	sys	sys_nanosleep,		2
500	sys	sys_mremap,		5
501	sys	sys_accept		3
502	sys	sys_bind		3
503	sys	sys_connect		3	/* 4170 */
504	sys	sys_getpeername		3
505	sys	sys_getsockname		3
506	sys	sys_getsockopt		5
507	sys	sys_listen		2
508	sys	sys_recv		4	/* 4175 */
509	sys	sys_recvfrom		6
510	sys	sys_recvmsg		3
511	sys	sys_send		4
512	sys	sys_sendmsg		3
513	sys	sys_sendto		6	/* 4180 */
514	sys	sys_setsockopt		5
515	sys	sys_shutdown		2
516	sys	sys_socket		3
517	sys	sys_socketpair		4
518	sys	sys_setresuid		3	/* 4185 */
519	sys	sys_getresuid		3
520	sys	sys_ni_syscall		0	/* was sys_query_module */
521	sys	sys_poll		3
522	sys	sys_nfsservctl		3
523	sys	sys_setresgid		3	/* 4190 */
524	sys	sys_getresgid		3
525	sys	sys_prctl		5
526	sys	sys_rt_sigreturn	0
527	sys	sys_rt_sigaction	4
528	sys	sys_rt_sigprocmask	4	/* 4195 */
529	sys	sys_rt_sigpending	2
530	sys	sys_rt_sigtimedwait	4
531	sys	sys_rt_sigqueueinfo	3
532	sys	sys_rt_sigsuspend	0
533	sys	sys_pread64		6	/* 4200 */
534	sys	sys_pwrite64		6
535	sys	sys_chown		3
536	sys	sys_getcwd		2
537	sys	sys_capget		2
538	sys	sys_capset		2	/* 4205 */
539	sys	sys_sigaltstack		0
540	sys	sys_sendfile		4
541	sys	sys_ni_syscall		0
542	sys	sys_ni_syscall		0
543	sys	sys_mmap2		6	/* 4210 */
544	sys	sys_truncate64		4
545	sys	sys_ftruncate64		4
546	sys	sys_stat64		2
547	sys	sys_lstat64		2
548	sys	sys_fstat64		2	/* 4215 */
549	sys	sys_pivot_root		2
550	sys	sys_mincore		3
551	sys	sys_madvise		3
552	sys	sys_getdents64		3
553	sys	sys_fcntl64		3	/* 4220 */
554	sys	sys_ni_syscall		0
555	sys	sys_gettid		0
556	sys	sys_readahead		5
557	sys	sys_setxattr		5
558	sys	sys_lsetxattr		5	/* 4225 */
559	sys	sys_fsetxattr		5
560	sys	sys_getxattr		4
561	sys	sys_lgetxattr		4
562	sys	sys_fgetxattr		4
563	sys	sys_listxattr		3	/* 4230 */
564	sys	sys_llistxattr		3
565	sys	sys_flistxattr		3
566	sys	sys_removexattr		2
567	sys	sys_lremovexattr	2
568	sys	sys_fremovexattr	2	/* 4235 */
569	sys	sys_tkill		2
570	sys	sys_sendfile64		5
571	sys	sys_futex		6
572#ifdef CONFIG_MIPS_MT_FPAFF
573	/*
574	 * For FPU affinity scheduling on MIPS MT processors, we need to
575	 * intercept sys_sched_xxxaffinity() calls until we get a proper hook
576	 * in kernel/sched.c.  Considered only temporary we only support these
577	 * hooks for the 32-bit kernel - there is no MIPS64 MT processor atm.
578	 */
579	sys	mipsmt_sys_sched_setaffinity	3
580	sys	mipsmt_sys_sched_getaffinity	3
581#else
582	sys	sys_sched_setaffinity	3
583	sys	sys_sched_getaffinity	3	/* 4240 */
584#endif /* CONFIG_MIPS_MT_FPAFF */
585	sys	sys_io_setup		2
586	sys	sys_io_destroy		1
587	sys	sys_io_getevents	5
588	sys	sys_io_submit		3
589	sys	sys_io_cancel		3	/* 4245 */
590	sys	sys_exit_group		1
591	sys	sys_lookup_dcookie	4
592	sys	sys_epoll_create	1
593	sys	sys_epoll_ctl		4
594	sys	sys_epoll_wait		3	/* 4250 */
595	sys	sys_remap_file_pages	5
596	sys	sys_set_tid_address	1
597	sys	sys_restart_syscall	0
598	sys	sys_fadvise64_64	7
599	sys	sys_statfs64		3	/* 4255 */
600	sys	sys_fstatfs64		2
601	sys	sys_timer_create	3
602	sys	sys_timer_settime	4
603	sys	sys_timer_gettime	2
604	sys	sys_timer_getoverrun	1	/* 4260 */
605	sys	sys_timer_delete	1
606	sys	sys_clock_settime	2
607	sys	sys_clock_gettime	2
608	sys	sys_clock_getres	2
609	sys	sys_clock_nanosleep	4	/* 4265 */
610	sys	sys_tgkill		3
611	sys	sys_utimes		2
612	sys	sys_mbind		4
613	sys	sys_ni_syscall		0	/* sys_get_mempolicy */
614	sys	sys_ni_syscall		0	/* 4270 sys_set_mempolicy */
615	sys	sys_mq_open		4
616	sys	sys_mq_unlink		1
617	sys	sys_mq_timedsend	5
618	sys	sys_mq_timedreceive	5
619	sys	sys_mq_notify		2	/* 4275 */
620	sys	sys_mq_getsetattr	3
621	sys	sys_ni_syscall		0	/* sys_vserver */
622	sys	sys_waitid		5
623	sys	sys_ni_syscall		0	/* available, was setaltroot */
624	sys	sys_add_key		5	/* 4280 */
625	sys	sys_request_key		4
626	sys	sys_keyctl		5
627	sys	sys_set_thread_area	1
628	sys	sys_inotify_init	0
629	sys	sys_inotify_add_watch	3	/* 4285 */
630	sys	sys_inotify_rm_watch	2
631	sys	sys_migrate_pages	4
632	sys	sys_openat		4
633	sys	sys_mkdirat		3
634	sys	sys_mknodat		4	/* 4290 */
635	sys	sys_fchownat		5
636	sys	sys_futimesat		3
637	sys	sys_fstatat64		4
638	sys	sys_unlinkat		3
639	sys	sys_renameat		4	/* 4295 */
640	sys	sys_linkat		5
641	sys	sys_symlinkat		3
642	sys	sys_readlinkat		4
643	sys	sys_fchmodat		3
644	sys	sys_faccessat		3	/* 4300 */
645	sys	sys_pselect6		6
646	sys	sys_ppoll		5
647	sys	sys_unshare		1
648	sys	sys_splice		4
649	sys	sys_sync_file_range	7	/* 4305 */
650	sys	sys_tee			4
651	.endm
652
653	/* We pre-compute the number of _instruction_ bytes needed to
654	   load or store the arguments 6-8. Negative values are ignored. */
655
656	.macro  sys function, nargs
657	PTR	\function
658	LONG	(\nargs << 2) - (5 << 2)
659	.endm
660
661	.align	3
662	.type	sys_call_table,@object
663EXPORT(sys_call_table)
664	syscalltable
665	.size	sys_call_table, . - sys_call_table
666