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gerrit-public.fairphone.software / kernel / msm-4.9 / 722cfd90420b660ad13f933efb135daf1d0e5400 / . / arch / mips / kernel / scall64-64.S
blob: 809fd1b55f8488e0c4a8a27a54d1b8610a7fd867 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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) 1999, 2000 Silicon Graphics, Inc.
8 * Copyright (C) 2001 MIPS Technologies, Inc.
9 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]10#include <linux/errno.h>
11#include <asm/asm.h>
12#include <asm/asmmacro.h>
13#include <asm/mipsregs.h>
14#include <asm/regdef.h>
15#include <asm/stackframe.h>
Sam Ravnborg048eb582005-09-09 22:32:31 +0200[diff] [blame]16#include <asm/asm-offsets.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]17#include <asm/sysmips.h>
18#include <asm/thread_info.h>
19#include <asm/unistd.h>
20#include <asm/war.h>
21
22#ifndef CONFIG_BINFMT_ELF32
23/* Neither O32 nor N32, so define handle_sys here */
24#define handle_sys64 handle_sys
25#endif
26
27 .align 5
28NESTED(handle_sys64, PT_SIZE, sp)
29#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
30 /*
31 * When 32-bit compatibility is configured scall_o32.S
32 * already did this.
33 */
34 .set noat
35 SAVE_SOME
36 STI
37 .set at
38#endif
39
40 dsubu t0, v0, __NR_64_Linux # check syscall number
41 sltiu t0, t0, __NR_64_Linux_syscalls + 1
42#if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32)
43 ld t1, PT_EPC(sp) # skip syscall on return
44 daddiu t1, 4 # skip to next instruction
45 sd t1, PT_EPC(sp)
46#endif
47 beqz t0, illegal_syscall
48
49 dsll t0, v0, 3 # offset into table
50 ld t2, (sys_call_table - (__NR_64_Linux * 8))(t0)
51 # syscall routine
52
53 sd a3, PT_R26(sp) # save a3 for syscall restarting
54
55 li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
56 LONG_L t0, TI_FLAGS($28) # syscall tracing enabled?
57 and t0, t1, t0
58 bnez t0, syscall_trace_entry
59
60 jalr t2 # Do The Real Thing (TM)
61
62 li t0, -EMAXERRNO - 1 # error?
63 sltu t0, t0, v0
64 sd t0, PT_R7(sp) # set error flag
65 beqz t0, 1f
66
67 dnegu v0 # error
68 sd v0, PT_R0(sp) # set flag for syscall
69 # restarting
701: sd v0, PT_R2(sp) # result
71
72n64_syscall_exit:
73 local_irq_disable # make sure need_resched and
74 # signals dont change between
75 # sampling and return
76 LONG_L a2, TI_FLAGS($28) # current->work
77 li t0, _TIF_ALLWORK_MASK
78 and t0, a2, t0
79 bnez t0, n64_syscall_exit_work
80
81 j restore_partial
82
83n64_syscall_exit_work:
84 j syscall_exit_work_partial
85
86/* ------------------------------------------------------------------------ */
87
88syscall_trace_entry:
89 SAVE_STATIC
90 move s0, t2
91 move a0, sp
92 li a1, 0
93 jal do_syscall_trace
94
Ralf Baechle04a70522005-11-30 16:24:57 +0000[diff] [blame]95 move t0, s0
96 RESTORE_STATIC
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]97 ld a0, PT_R4(sp) # Restore argument registers
98 ld a1, PT_R5(sp)
99 ld a2, PT_R6(sp)
100 ld a3, PT_R7(sp)
101 ld a4, PT_R8(sp)
102 ld a5, PT_R9(sp)
Ralf Baechle04a70522005-11-30 16:24:57 +0000[diff] [blame]103 jalr t0
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]104
105 li t0, -EMAXERRNO - 1 # error?
106 sltu t0, t0, v0
107 sd t0, PT_R7(sp) # set error flag
108 beqz t0, 1f
109
110 dnegu v0 # error
111 sd v0, PT_R0(sp) # set flag for syscall restarting
1121: sd v0, PT_R2(sp) # result
113
114 j syscall_exit
115
116illegal_syscall:
117 /* This also isn't a 64-bit syscall, throw an error. */
118 li v0, -ENOSYS # error
119 sd v0, PT_R2(sp)
120 li t0, 1 # set error flag
121 sd t0, PT_R7(sp)
122 j n64_syscall_exit
123 END(handle_sys64)
124
125 LEAF(mips_atomic_set)
126 andi v0, a1, 3 # must be word aligned
127 bnez v0, bad_alignment
128
129 LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range?
130 LONG_ADDIU a0, a1, 4
131 or a0, a0, a1
132 and a0, a0, v1
133 bltz a0, bad_address
134
135#ifdef CONFIG_CPU_HAS_LLSC
136 /* Ok, this is the ll/sc case. World is sane :-) */
1371: ll v0, (a1)
138 move a0, a2
1392: sc a0, (a1)
140#if R10000_LLSC_WAR
141 beqzl a0, 1b
142#else
143 beqz a0, 1b
144#endif
145
146 .section __ex_table,"a"
147 PTR 1b, bad_stack
148 PTR 2b, bad_stack
149 .previous
150#else
151 sw a1, 16(sp)
152 sw a2, 20(sp)
153
154 move a0, sp
155 move a2, a1
156 li a1, 1
157 jal do_page_fault
158
159 lw a1, 16(sp)
160 lw a2, 20(sp)
161
162 /*
163 * At this point the page should be readable and writable unless
164 * there was no more memory available.
165 */
1661: lw v0, (a1)
1672: sw a2, (a1)
168
169 .section __ex_table,"a"
170 PTR 1b, no_mem
171 PTR 2b, no_mem
172 .previous
173#endif
174
175 sd zero, PT_R7(sp) # success
176 sd v0, PT_R2(sp) # result
177
Ralf Baechleedcb98d2005-11-29 13:01:01 +0000[diff] [blame]178 j n64_syscall_exit # continue like a normal syscall
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]179
180no_mem: li v0, -ENOMEM
181 jr ra
182
183bad_address:
184 li v0, -EFAULT
185 jr ra
186
187bad_alignment:
188 li v0, -EINVAL
189 jr ra
190 END(mips_atomic_set)
191
192 LEAF(sys_sysmips)
193 beq a0, MIPS_ATOMIC_SET, mips_atomic_set
194 j _sys_sysmips
195 END(sys_sysmips)
196
197 .align 3
198sys_call_table:
199 PTR sys_read /* 5000 */
200 PTR sys_write
201 PTR sys_open
202 PTR sys_close
203 PTR sys_newstat
204 PTR sys_newfstat /* 5005 */
205 PTR sys_newlstat
206 PTR sys_poll
207 PTR sys_lseek
208 PTR old_mmap
209 PTR sys_mprotect /* 5010 */
210 PTR sys_munmap
211 PTR sys_brk
212 PTR sys_rt_sigaction
213 PTR sys_rt_sigprocmask
214 PTR sys_ioctl /* 5015 */
215 PTR sys_pread64
216 PTR sys_pwrite64
217 PTR sys_readv
218 PTR sys_writev
219 PTR sys_access /* 5020 */
220 PTR sys_pipe
221 PTR sys_select
222 PTR sys_sched_yield
223 PTR sys_mremap
224 PTR sys_msync /* 5025 */
225 PTR sys_mincore
226 PTR sys_madvise
227 PTR sys_shmget
228 PTR sys_shmat
229 PTR sys_shmctl /* 5030 */
230 PTR sys_dup
231 PTR sys_dup2
232 PTR sys_pause
233 PTR sys_nanosleep
234 PTR sys_getitimer /* 5035 */
235 PTR sys_setitimer
236 PTR sys_alarm
237 PTR sys_getpid
238 PTR sys_sendfile64
239 PTR sys_socket /* 5040 */
240 PTR sys_connect
241 PTR sys_accept
242 PTR sys_sendto
243 PTR sys_recvfrom
244 PTR sys_sendmsg /* 5045 */
245 PTR sys_recvmsg
246 PTR sys_shutdown
247 PTR sys_bind
248 PTR sys_listen
249 PTR sys_getsockname /* 5050 */
250 PTR sys_getpeername
251 PTR sys_socketpair
252 PTR sys_setsockopt
253 PTR sys_getsockopt
254 PTR sys_clone /* 5055 */
255 PTR sys_fork
256 PTR sys_execve
257 PTR sys_exit
258 PTR sys_wait4
259 PTR sys_kill /* 5060 */
260 PTR sys_newuname
261 PTR sys_semget
262 PTR sys_semop
263 PTR sys_semctl
264 PTR sys_shmdt /* 5065 */
265 PTR sys_msgget
266 PTR sys_msgsnd
267 PTR sys_msgrcv
268 PTR sys_msgctl
269 PTR sys_fcntl /* 5070 */
270 PTR sys_flock
271 PTR sys_fsync
272 PTR sys_fdatasync
273 PTR sys_truncate
274 PTR sys_ftruncate /* 5075 */
275 PTR sys_getdents
276 PTR sys_getcwd
277 PTR sys_chdir
278 PTR sys_fchdir
279 PTR sys_rename /* 5080 */
280 PTR sys_mkdir
281 PTR sys_rmdir
282 PTR sys_creat
283 PTR sys_link
284 PTR sys_unlink /* 5085 */
285 PTR sys_symlink
286 PTR sys_readlink
287 PTR sys_chmod
288 PTR sys_fchmod
289 PTR sys_chown /* 5090 */
290 PTR sys_fchown
291 PTR sys_lchown
292 PTR sys_umask
293 PTR sys_gettimeofday
294 PTR sys_getrlimit /* 5095 */
295 PTR sys_getrusage
296 PTR sys_sysinfo
297 PTR sys_times
298 PTR sys_ptrace
299 PTR sys_getuid /* 5100 */
300 PTR sys_syslog
301 PTR sys_getgid
302 PTR sys_setuid
303 PTR sys_setgid
304 PTR sys_geteuid /* 5105 */
305 PTR sys_getegid
306 PTR sys_setpgid
307 PTR sys_getppid
308 PTR sys_getpgrp
309 PTR sys_setsid /* 5110 */
310 PTR sys_setreuid
311 PTR sys_setregid
312 PTR sys_getgroups
313 PTR sys_setgroups
314 PTR sys_setresuid /* 5115 */
315 PTR sys_getresuid
316 PTR sys_setresgid
317 PTR sys_getresgid
318 PTR sys_getpgid
319 PTR sys_setfsuid /* 5120 */
320 PTR sys_setfsgid
321 PTR sys_getsid
322 PTR sys_capget
323 PTR sys_capset
324 PTR sys_rt_sigpending /* 5125 */
325 PTR sys_rt_sigtimedwait
326 PTR sys_rt_sigqueueinfo
327 PTR sys_rt_sigsuspend
328 PTR sys_sigaltstack
329 PTR sys_utime /* 5130 */
330 PTR sys_mknod
331 PTR sys_personality
332 PTR sys_ustat
333 PTR sys_statfs
334 PTR sys_fstatfs /* 5135 */
335 PTR sys_sysfs
336 PTR sys_getpriority
337 PTR sys_setpriority
338 PTR sys_sched_setparam
339 PTR sys_sched_getparam /* 5140 */
340 PTR sys_sched_setscheduler
341 PTR sys_sched_getscheduler
342 PTR sys_sched_get_priority_max
343 PTR sys_sched_get_priority_min
344 PTR sys_sched_rr_get_interval /* 5145 */
345 PTR sys_mlock
346 PTR sys_munlock
347 PTR sys_mlockall
348 PTR sys_munlockall
349 PTR sys_vhangup /* 5150 */
350 PTR sys_pivot_root
351 PTR sys_sysctl
352 PTR sys_prctl
353 PTR sys_adjtimex
354 PTR sys_setrlimit /* 5155 */
355 PTR sys_chroot
356 PTR sys_sync
357 PTR sys_acct
358 PTR sys_settimeofday
359 PTR sys_mount /* 5160 */
360 PTR sys_umount
361 PTR sys_swapon
362 PTR sys_swapoff
363 PTR sys_reboot
364 PTR sys_sethostname /* 5165 */
365 PTR sys_setdomainname
366 PTR sys_ni_syscall /* was create_module */
367 PTR sys_init_module
368 PTR sys_delete_module
369 PTR sys_ni_syscall /* 5170, was get_kernel_syms */
370 PTR sys_ni_syscall /* was query_module */
371 PTR sys_quotactl
372 PTR sys_nfsservctl
373 PTR sys_ni_syscall /* res. for getpmsg */
374 PTR sys_ni_syscall /* 5175 for putpmsg */
375 PTR sys_ni_syscall /* res. for afs_syscall */
376 PTR sys_ni_syscall /* res. for security */
377 PTR sys_gettid
378 PTR sys_readahead
379 PTR sys_setxattr /* 5180 */
380 PTR sys_lsetxattr
381 PTR sys_fsetxattr
382 PTR sys_getxattr
383 PTR sys_lgetxattr
384 PTR sys_fgetxattr /* 5185 */
385 PTR sys_listxattr
386 PTR sys_llistxattr
387 PTR sys_flistxattr
388 PTR sys_removexattr
389 PTR sys_lremovexattr /* 5190 */
390 PTR sys_fremovexattr
391 PTR sys_tkill
392 PTR sys_ni_syscall
393 PTR sys_futex
394 PTR sys_sched_setaffinity /* 5195 */
395 PTR sys_sched_getaffinity
396 PTR sys_cacheflush
397 PTR sys_cachectl
398 PTR sys_sysmips
399 PTR sys_io_setup /* 5200 */
400 PTR sys_io_destroy
401 PTR sys_io_getevents
402 PTR sys_io_submit
403 PTR sys_io_cancel
404 PTR sys_exit_group /* 5205 */
405 PTR sys_lookup_dcookie
406 PTR sys_epoll_create
407 PTR sys_epoll_ctl
408 PTR sys_epoll_wait
409 PTR sys_remap_file_pages /* 5210 */
410 PTR sys_rt_sigreturn
411 PTR sys_set_tid_address
412 PTR sys_restart_syscall
413 PTR sys_semtimedop
414 PTR sys_fadvise64_64 /* 5215 */
415 PTR sys_timer_create
416 PTR sys_timer_settime
417 PTR sys_timer_gettime
418 PTR sys_timer_getoverrun
419 PTR sys_timer_delete /* 5220 */
420 PTR sys_clock_settime
421 PTR sys_clock_gettime
422 PTR sys_clock_getres
423 PTR sys_clock_nanosleep
424 PTR sys_tgkill /* 5225 */
425 PTR sys_utimes
426 PTR sys_mbind
427 PTR sys_ni_syscall /* sys_get_mempolicy */
428 PTR sys_ni_syscall /* sys_set_mempolicy */
429 PTR sys_mq_open /* 5230 */
430 PTR sys_mq_unlink
431 PTR sys_mq_timedsend
432 PTR sys_mq_timedreceive
433 PTR sys_mq_notify
434 PTR sys_mq_getsetattr /* 5235 */
435 PTR sys_ni_syscall /* sys_vserver */
436 PTR sys_waitid
437 PTR sys_ni_syscall /* available, was setaltroot */
438 PTR sys_add_key
439 PTR sys_request_key /* 5240 */
440 PTR sys_keyctl
Ralf Baechle3c370262005-04-13 17:43:59 +0000[diff] [blame]441 PTR sys_set_thread_area
Ralf Baechle7db36c82005-07-13 11:48:45 +0000[diff] [blame]442 PTR sys_inotify_init
443 PTR sys_inotify_add_watch
444 PTR sys_inotify_rm_watch /* 5245 */
Ralf Baechle72bf8912006-02-08 13:38:50 +0000[diff] [blame]445 PTR sys_migrate_pages
446 PTR sys_openat
447 PTR sys_mkdirat
448 PTR sys_mknodat
449 PTR sys_fchownat /* 5250 */
450 PTR sys_futimesat
451 PTR sys_newfstatat
452 PTR sys_unlinkat
453 PTR sys_renameat
454 PTR sys_linkat /* 5255 */
455 PTR sys_symlinkat
456 PTR sys_readlinkat
457 PTR sys_fchmodat
458 PTR sys_faccessat
459 PTR sys_pselect6 /* 5260 */
460 PTR sys_ppoll
461 PTR sys_unshare
Ralf Baechlef115da92006-03-31 09:27:20 +0100[diff] [blame]462 PTR sys_splice
Ralf Baechlea8d587a2006-04-01 07:49:21 +0100[diff] [blame]463 PTR sys_sync_file_range
Ralf Baechle136d47d2006-04-15 11:16:19 +0200[diff] [blame]464 PTR sys_tee /* 5265 */
Ralf Baechle722cfd92006-07-02 16:31:14 +0100[diff] [blame^]465 PTR sys_vmsplice
466 PTR sys_move_pages