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 by Ralf Baechle
7 * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
8 * Copyright (C) 2001 MIPS Technologies, Inc.
9 */
10#include <linux/errno.h>
11#include <asm/asm.h>
12#include <asm/asmmacro.h>
13#include <asm/irqflags.h>
14#include <asm/mipsregs.h>
15#include <asm/regdef.h>
16#include <asm/stackframe.h>
17#include <asm/thread_info.h>
18#include <asm/unistd.h>
19
20#ifndef CONFIG_MIPS32_O32
21/* No O32, so define handle_sys here */
22#define handle_sysn32 handle_sys
23#endif
24
25	.align	5
26NESTED(handle_sysn32, PT_SIZE, sp)
27#ifndef CONFIG_MIPS32_O32
28	.set	noat
29	SAVE_SOME
30	TRACE_IRQS_ON_RELOAD
31	STI
32	.set	at
33#endif
34
35	dsubu	t0, v0, __NR_N32_Linux	# check syscall number
36	sltiu	t0, t0, __NR_N32_Linux_syscalls + 1
37
38#ifndef CONFIG_MIPS32_O32
39	ld	t1, PT_EPC(sp)		# skip syscall on return
40	daddiu	t1, 4			# skip to next instruction
41	sd	t1, PT_EPC(sp)
42#endif
43	beqz	t0, not_n32_scall
44
45	dsll	t0, v0, 3		# offset into table
46	ld	t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0)
47
48	sd	a3, PT_R26(sp)		# save a3 for syscall restarting
49
50	li	t1, _TIF_WORK_SYSCALL_ENTRY
51	LONG_L	t0, TI_FLAGS($28)	# syscall tracing enabled?
52	and	t0, t1, t0
53	bnez	t0, n32_syscall_trace_entry
54
55	jalr	t2			# Do The Real Thing (TM)
56
57	li	t0, -EMAXERRNO - 1	# error?
58	sltu	t0, t0, v0
59	sd	t0, PT_R7(sp)		# set error flag
60	beqz	t0, 1f
61
62	ld	t1, PT_R2(sp)		# syscall number
63	dnegu	v0			# error
64	sd	t1, PT_R0(sp)		# save it for syscall restarting
651:	sd	v0, PT_R2(sp)		# result
66
67	j	syscall_exit_partial
68
69/* ------------------------------------------------------------------------ */
70
71n32_syscall_trace_entry:
72	SAVE_STATIC
73	move	s0, t2
74	move	a0, sp
75	move	a1, v0
76	jal	syscall_trace_enter
77
78	bltz	v0, 2f			# seccomp failed? Skip syscall
79
80	move	t0, s0
81	RESTORE_STATIC
82	ld	a0, PT_R4(sp)		# Restore argument registers
83	ld	a1, PT_R5(sp)
84	ld	a2, PT_R6(sp)
85	ld	a3, PT_R7(sp)
86	ld	a4, PT_R8(sp)
87	ld	a5, PT_R9(sp)
88	jalr	t0
89
90	li	t0, -EMAXERRNO - 1	# error?
91	sltu	t0, t0, v0
92	sd	t0, PT_R7(sp)		# set error flag
93	beqz	t0, 1f
94
95	ld	t1, PT_R2(sp)		# syscall number
96	dnegu	v0			# error
97	sd	t1, PT_R0(sp)		# save it for syscall restarting
981:	sd	v0, PT_R2(sp)		# result
99
1002:	j	syscall_exit
101
102not_n32_scall:
103	/* This is not an n32 compatibility syscall, pass it on to
104	   the n64 syscall handlers.  */
105	j	handle_sys64
106
107	END(handle_sysn32)
108
109	.type	sysn32_call_table, @object
110EXPORT(sysn32_call_table)
111	PTR	sys_read			/* 6000 */
112	PTR	sys_write
113	PTR	sys_open
114	PTR	sys_close
115	PTR	sys_newstat
116	PTR	sys_newfstat			/* 6005 */
117	PTR	sys_newlstat
118	PTR	sys_poll
119	PTR	sys_lseek
120	PTR	sys_mips_mmap
121	PTR	sys_mprotect			/* 6010 */
122	PTR	sys_munmap
123	PTR	sys_brk
124	PTR	compat_sys_rt_sigaction
125	PTR	compat_sys_rt_sigprocmask
126	PTR	compat_sys_ioctl		/* 6015 */
127	PTR	sys_pread64
128	PTR	sys_pwrite64
129	PTR	compat_sys_readv
130	PTR	compat_sys_writev
131	PTR	sys_access			/* 6020 */
132	PTR	sysm_pipe
133	PTR	compat_sys_select
134	PTR	sys_sched_yield
135	PTR	sys_mremap
136	PTR	sys_msync			/* 6025 */
137	PTR	sys_mincore
138	PTR	sys_madvise
139	PTR	sys_shmget
140	PTR	sys_shmat
141	PTR	compat_sys_shmctl			/* 6030 */
142	PTR	sys_dup
143	PTR	sys_dup2
144	PTR	sys_pause
145	PTR	compat_sys_nanosleep
146	PTR	compat_sys_getitimer		/* 6035 */
147	PTR	compat_sys_setitimer
148	PTR	sys_alarm
149	PTR	sys_getpid
150	PTR	compat_sys_sendfile
151	PTR	sys_socket			/* 6040 */
152	PTR	sys_connect
153	PTR	sys_accept
154	PTR	sys_sendto
155	PTR	compat_sys_recvfrom
156	PTR	compat_sys_sendmsg		/* 6045 */
157	PTR	compat_sys_recvmsg
158	PTR	sys_shutdown
159	PTR	sys_bind
160	PTR	sys_listen
161	PTR	sys_getsockname			/* 6050 */
162	PTR	sys_getpeername
163	PTR	sys_socketpair
164	PTR	compat_sys_setsockopt
165	PTR	compat_sys_getsockopt
166	PTR	__sys_clone			/* 6055 */
167	PTR	__sys_fork
168	PTR	compat_sys_execve
169	PTR	sys_exit
170	PTR	compat_sys_wait4
171	PTR	sys_kill			/* 6060 */
172	PTR	sys_newuname
173	PTR	sys_semget
174	PTR	sys_semop
175	PTR	compat_sys_semctl
176	PTR	sys_shmdt			/* 6065 */
177	PTR	sys_msgget
178	PTR	compat_sys_msgsnd
179	PTR	compat_sys_msgrcv
180	PTR	compat_sys_msgctl
181	PTR	compat_sys_fcntl		/* 6070 */
182	PTR	sys_flock
183	PTR	sys_fsync
184	PTR	sys_fdatasync
185	PTR	sys_truncate
186	PTR	sys_ftruncate			/* 6075 */
187	PTR	compat_sys_getdents
188	PTR	sys_getcwd
189	PTR	sys_chdir
190	PTR	sys_fchdir
191	PTR	sys_rename			/* 6080 */
192	PTR	sys_mkdir
193	PTR	sys_rmdir
194	PTR	sys_creat
195	PTR	sys_link
196	PTR	sys_unlink			/* 6085 */
197	PTR	sys_symlink
198	PTR	sys_readlink
199	PTR	sys_chmod
200	PTR	sys_fchmod
201	PTR	sys_chown			/* 6090 */
202	PTR	sys_fchown
203	PTR	sys_lchown
204	PTR	sys_umask
205	PTR	compat_sys_gettimeofday
206	PTR	compat_sys_getrlimit		/* 6095 */
207	PTR	compat_sys_getrusage
208	PTR	compat_sys_sysinfo
209	PTR	compat_sys_times
210	PTR	compat_sys_ptrace
211	PTR	sys_getuid			/* 6100 */
212	PTR	sys_syslog
213	PTR	sys_getgid
214	PTR	sys_setuid
215	PTR	sys_setgid
216	PTR	sys_geteuid			/* 6105 */
217	PTR	sys_getegid
218	PTR	sys_setpgid
219	PTR	sys_getppid
220	PTR	sys_getpgrp
221	PTR	sys_setsid			/* 6110 */
222	PTR	sys_setreuid
223	PTR	sys_setregid
224	PTR	sys_getgroups
225	PTR	sys_setgroups
226	PTR	sys_setresuid			/* 6115 */
227	PTR	sys_getresuid
228	PTR	sys_setresgid
229	PTR	sys_getresgid
230	PTR	sys_getpgid
231	PTR	sys_setfsuid			/* 6120 */
232	PTR	sys_setfsgid
233	PTR	sys_getsid
234	PTR	sys_capget
235	PTR	sys_capset
236	PTR	compat_sys_rt_sigpending	/* 6125 */
237	PTR	compat_sys_rt_sigtimedwait
238	PTR	compat_sys_rt_sigqueueinfo
239	PTR	compat_sys_rt_sigsuspend
240	PTR	compat_sys_sigaltstack
241	PTR	compat_sys_utime		/* 6130 */
242	PTR	sys_mknod
243	PTR	sys_32_personality
244	PTR	compat_sys_ustat
245	PTR	compat_sys_statfs
246	PTR	compat_sys_fstatfs		/* 6135 */
247	PTR	sys_sysfs
248	PTR	sys_getpriority
249	PTR	sys_setpriority
250	PTR	sys_sched_setparam
251	PTR	sys_sched_getparam		/* 6140 */
252	PTR	sys_sched_setscheduler
253	PTR	sys_sched_getscheduler
254	PTR	sys_sched_get_priority_max
255	PTR	sys_sched_get_priority_min
256	PTR	compat_sys_sched_rr_get_interval	/* 6145 */
257	PTR	sys_mlock
258	PTR	sys_munlock
259	PTR	sys_mlockall
260	PTR	sys_munlockall
261	PTR	sys_vhangup			/* 6150 */
262	PTR	sys_pivot_root
263	PTR	compat_sys_sysctl
264	PTR	sys_prctl
265	PTR	compat_sys_adjtimex
266	PTR	compat_sys_setrlimit		/* 6155 */
267	PTR	sys_chroot
268	PTR	sys_sync
269	PTR	sys_acct
270	PTR	compat_sys_settimeofday
271	PTR	compat_sys_mount		/* 6160 */
272	PTR	sys_umount
273	PTR	sys_swapon
274	PTR	sys_swapoff
275	PTR	sys_reboot
276	PTR	sys_sethostname			/* 6165 */
277	PTR	sys_setdomainname
278	PTR	sys_ni_syscall			/* was create_module */
279	PTR	sys_init_module
280	PTR	sys_delete_module
281	PTR	sys_ni_syscall			/* 6170, was get_kernel_syms */
282	PTR	sys_ni_syscall			/* was query_module */
283	PTR	sys_quotactl
284	PTR	sys_ni_syscall			/* was nfsservctl */
285	PTR	sys_ni_syscall			/* res. for getpmsg */
286	PTR	sys_ni_syscall			/* 6175	 for putpmsg */
287	PTR	sys_ni_syscall			/* res. for afs_syscall */
288	PTR	sys_ni_syscall			/* res. for security */
289	PTR	sys_gettid
290	PTR	sys_readahead
291	PTR	sys_setxattr			/* 6180 */
292	PTR	sys_lsetxattr
293	PTR	sys_fsetxattr
294	PTR	sys_getxattr
295	PTR	sys_lgetxattr
296	PTR	sys_fgetxattr			/* 6185 */
297	PTR	sys_listxattr
298	PTR	sys_llistxattr
299	PTR	sys_flistxattr
300	PTR	sys_removexattr
301	PTR	sys_lremovexattr		/* 6190 */
302	PTR	sys_fremovexattr
303	PTR	sys_tkill
304	PTR	sys_ni_syscall
305	PTR	compat_sys_futex
306	PTR	compat_sys_sched_setaffinity	/* 6195 */
307	PTR	compat_sys_sched_getaffinity
308	PTR	sys_cacheflush
309	PTR	sys_cachectl
310	PTR	sys_sysmips
311	PTR	compat_sys_io_setup			/* 6200 */
312	PTR	sys_io_destroy
313	PTR	compat_sys_io_getevents
314	PTR	compat_sys_io_submit
315	PTR	sys_io_cancel
316	PTR	sys_exit_group			/* 6205 */
317	PTR	sys_lookup_dcookie
318	PTR	sys_epoll_create
319	PTR	sys_epoll_ctl
320	PTR	sys_epoll_wait
321	PTR	sys_remap_file_pages		/* 6210 */
322	PTR	sysn32_rt_sigreturn
323	PTR	compat_sys_fcntl64
324	PTR	sys_set_tid_address
325	PTR	sys_restart_syscall
326	PTR	compat_sys_semtimedop			/* 6215 */
327	PTR	sys_fadvise64_64
328	PTR	compat_sys_statfs64
329	PTR	compat_sys_fstatfs64
330	PTR	sys_sendfile64
331	PTR	compat_sys_timer_create		/* 6220 */
332	PTR	compat_sys_timer_settime
333	PTR	compat_sys_timer_gettime
334	PTR	sys_timer_getoverrun
335	PTR	sys_timer_delete
336	PTR	compat_sys_clock_settime		/* 6225 */
337	PTR	compat_sys_clock_gettime
338	PTR	compat_sys_clock_getres
339	PTR	compat_sys_clock_nanosleep
340	PTR	sys_tgkill
341	PTR	compat_sys_utimes		/* 6230 */
342	PTR	compat_sys_mbind
343	PTR	compat_sys_get_mempolicy
344	PTR	compat_sys_set_mempolicy
345	PTR	compat_sys_mq_open
346	PTR	sys_mq_unlink			/* 6235 */
347	PTR	compat_sys_mq_timedsend
348	PTR	compat_sys_mq_timedreceive
349	PTR	compat_sys_mq_notify
350	PTR	compat_sys_mq_getsetattr
351	PTR	sys_ni_syscall			/* 6240, sys_vserver */
352	PTR	compat_sys_waitid
353	PTR	sys_ni_syscall			/* available, was setaltroot */
354	PTR	sys_add_key
355	PTR	sys_request_key
356	PTR	sys_keyctl			/* 6245 */
357	PTR	sys_set_thread_area
358	PTR	sys_inotify_init
359	PTR	sys_inotify_add_watch
360	PTR	sys_inotify_rm_watch
361	PTR	compat_sys_migrate_pages	/* 6250 */
362	PTR	sys_openat
363	PTR	sys_mkdirat
364	PTR	sys_mknodat
365	PTR	sys_fchownat
366	PTR	compat_sys_futimesat		/* 6255 */
367	PTR	sys_newfstatat
368	PTR	sys_unlinkat
369	PTR	sys_renameat
370	PTR	sys_linkat
371	PTR	sys_symlinkat			/* 6260 */
372	PTR	sys_readlinkat
373	PTR	sys_fchmodat
374	PTR	sys_faccessat
375	PTR	compat_sys_pselect6
376	PTR	compat_sys_ppoll		/* 6265 */
377	PTR	sys_unshare
378	PTR	sys_splice
379	PTR	sys_sync_file_range
380	PTR	sys_tee
381	PTR	compat_sys_vmsplice		/* 6270 */
382	PTR	compat_sys_move_pages
383	PTR	compat_sys_set_robust_list
384	PTR	compat_sys_get_robust_list
385	PTR	compat_sys_kexec_load
386	PTR	sys_getcpu			/* 6275 */
387	PTR	compat_sys_epoll_pwait
388	PTR	sys_ioprio_set
389	PTR	sys_ioprio_get
390	PTR	compat_sys_utimensat
391	PTR	compat_sys_signalfd		/* 6280 */
392	PTR	sys_ni_syscall			/* was timerfd */
393	PTR	sys_eventfd
394	PTR	sys_fallocate
395	PTR	sys_timerfd_create
396	PTR	compat_sys_timerfd_gettime	/* 6285 */
397	PTR	compat_sys_timerfd_settime
398	PTR	compat_sys_signalfd4
399	PTR	sys_eventfd2
400	PTR	sys_epoll_create1
401	PTR	sys_dup3			/* 6290 */
402	PTR	sys_pipe2
403	PTR	sys_inotify_init1
404	PTR	compat_sys_preadv
405	PTR	compat_sys_pwritev
406	PTR	compat_sys_rt_tgsigqueueinfo	/* 6295 */
407	PTR	sys_perf_event_open
408	PTR	sys_accept4
409	PTR	compat_sys_recvmmsg
410	PTR	sys_getdents64
411	PTR	sys_fanotify_init		/* 6300 */
412	PTR	sys_fanotify_mark
413	PTR	sys_prlimit64
414	PTR	sys_name_to_handle_at
415	PTR	sys_open_by_handle_at
416	PTR	compat_sys_clock_adjtime	/* 6305 */
417	PTR	sys_syncfs
418	PTR	compat_sys_sendmmsg
419	PTR	sys_setns
420	PTR	compat_sys_process_vm_readv
421	PTR	compat_sys_process_vm_writev	/* 6310 */
422	PTR	sys_kcmp
423	PTR	sys_finit_module
424	PTR	sys_sched_setattr
425	PTR	sys_sched_getattr
426	PTR	sys_renameat2			/* 6315 */
427	PTR	sys_seccomp
428	PTR	sys_getrandom
429	PTR	sys_memfd_create
430	PTR	sys_bpf
431	PTR	compat_sys_execveat		/* 6320 */
432	.size	sysn32_call_table,.-sysn32_call_table
433