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scall64-n32.S

scall64-n32.S 9.7 KB
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  1. /*
    2. 

  2.  * This file is subject to the terms and conditions of the GNU General Public
    3. 

  3.  * License.  See the file "COPYING" in the main directory of this archive
    4. 

  4.  * for more details.
    5. 

  5.  *
    6. 

  6.  * Copyright (C) 1995, 96, 97, 98, 99, 2000, 01 by Ralf Baechle
    7. 

  7.  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
    8. 

  8.  * Copyright (C) 2001 MIPS Technologies, Inc.
    9. 

  9.  */
    10. 

  10. #include <linux/errno.h>
    11. 

  11. #include <asm/asm.h>
    12. 

  12. #include <asm/asmmacro.h>
    13. 

  13. #include <asm/irqflags.h>
    14. 

  14. #include <asm/mipsregs.h>
    15. 

  15. #include <asm/regdef.h>
    16. 

  16. #include <asm/stackframe.h>
    17. 

  17. #include <asm/thread_info.h>
    18. 

  18. #include <asm/unistd.h>
    19. 

  19. 

  20. /* This duplicates the definition from <linux/sched.h> */
    21. 

  21. #define PT_TRACESYS	0x00000002	/* tracing system calls */
    22. 

  22. 

  23. /* This duplicates the definition from <asm/signal.h> */
    24. 

  24. #define SIGILL		4		/* Illegal instruction (ANSI).  */
    25. 

  25. 

  26. #ifndef CONFIG_MIPS32_O32
    27. 

  27. /* No O32, so define handle_sys here */
    28. 

  28. #define handle_sysn32 handle_sys
    29. 

  29. #endif
    30. 

  30. 

  31. 	.align  5
    32. 

  32. NESTED(handle_sysn32, PT_SIZE, sp)
    33. 

  33. #ifndef CONFIG_MIPS32_O32
    34. 

  34. 	.set	noat
    35. 

  35. 	SAVE_SOME
    36. 

  36. 	TRACE_IRQS_ON_RELOAD
    37. 

  37. 	STI
    38. 

  38. 	.set	at
    39. 

  39. #endif
    40. 

  40. 

  41. 	dsubu	t0, v0, __NR_N32_Linux	# check syscall number
    42. 

  42. 	sltiu	t0, t0,	__NR_N32_Linux_syscalls + 1
    43. 

  43. 

  44. #ifndef CONFIG_MIPS32_O32
    45. 

  45. 	ld	t1, PT_EPC(sp)		# skip syscall on return
    46. 

  46. 	daddiu	t1, 4			# skip to next instruction
    47. 

  47. 	sd	t1, PT_EPC(sp)
    48. 

  48. #endif
    49. 

  49. 	beqz	t0, not_n32_scall
    50. 

  50. 

  51. 	dsll	t0, v0, 3		# offset into table
    52. 

  52. 	ld	t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0)
    53. 

  53. 

  54. 	sd	a3, PT_R26(sp)		# save a3 for syscall restarting
    55. 

  55. 

  56. 	li	t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
    57. 

  57. 	LONG_L	t0, TI_FLAGS($28)	# syscall tracing enabled?
    58. 

  58. 	and	t0, t1, t0
    59. 

  59. 	bnez	t0, n32_syscall_trace_entry
    60. 

  60. 

  61. 	jalr	t2			# Do The Real Thing (TM)
    62. 

  62. 

  63. 	li	t0, -EMAXERRNO - 1	# error?
    64. 

  64. 	sltu	t0, t0, v0
    65. 

  65. 	sd	t0, PT_R7(sp)		# set error flag
    66. 

  66. 	beqz	t0, 1f
    67. 

  67. 

  68. 	dnegu	v0			# error
    69. 

  69. 	sd	v0, PT_R0(sp)		# set flag for syscall restarting
    70. 

  70. 1:	sd	v0, PT_R2(sp)		# result
    71. 

  71. 

  72. 	local_irq_disable		# make sure need_resched and
    73. 

  73. 					# signals dont change between
    74. 

  74. 					# sampling and return
    75. 

  75. 	LONG_L  a2, TI_FLAGS($28)	# current->work
    76. 

  76. 	li	t0, _TIF_ALLWORK_MASK
    77. 

  77. 	and	t0, a2, t0
    78. 

  78. 	bnez	t0, n32_syscall_exit_work
    79. 

  79. 

  80. 	j	restore_partial
    81. 

  81. 

  82. n32_syscall_exit_work:
    83. 

  83. 	j	syscall_exit_work_partial
    84. 

  84. 

  85. /* ------------------------------------------------------------------------ */
    86. 

  86. 

  87. n32_syscall_trace_entry:
    88. 

  88. 	SAVE_STATIC
    89. 

  89. 	move	s0, t2
    90. 

  90. 	move	a0, sp
    91. 

  91. 	li	a1, 0
    92. 

  92. 	jal	do_syscall_trace
    93. 

  93. 

  94. 	move	t0, s0
    95. 

  95. 	RESTORE_STATIC
    96. 

  96. 	ld	a0, PT_R4(sp)		# Restore argument registers
    97. 

  97. 	ld	a1, PT_R5(sp)
    98. 

  98. 	ld	a2, PT_R6(sp)
    99. 

  99. 	ld	a3, PT_R7(sp)
    100. 

  100. 	ld	a4, PT_R8(sp)
    101. 

  101. 	ld	a5, PT_R9(sp)
    102. 

  102. 	jalr	t0
    103. 

  103. 

  104. 	li	t0, -EMAXERRNO - 1	# error?
    105. 

  105. 	sltu	t0, t0, v0
    106. 

  106. 	sd	t0, PT_R7(sp)		# set error flag
    107. 

  107. 	beqz	t0, 1f
    108. 

  108. 

  109. 	dnegu	v0			# error
    110. 

  110. 	sd	v0, PT_R0(sp)		# set flag for syscall restarting
    111. 

  111. 1:	sd	v0, PT_R2(sp)		# result
    112. 

  112. 

  113. 	j	syscall_exit
    114. 

  114. 

  115. not_n32_scall:
    116. 

  116. 	/* This is not an n32 compatibility syscall, pass it on to
    117. 

  117. 	   the n64 syscall handlers.  */
    118. 

  118. 	j	handle_sys64
    119. 

  119. 

  120. 	END(handle_sysn32)
    121. 

  121. 

  122. EXPORT(sysn32_call_table)
    123. 

  123. 	PTR	sys_read			/* 6000 */
    124. 

  124. 	PTR	sys_write
    125. 

  125. 	PTR	sys_open
    126. 

  126. 	PTR	sys_close
    127. 

  127. 	PTR	sys_newstat
    128. 

  128. 	PTR	sys_newfstat			/* 6005 */
    129. 

  129. 	PTR	sys_newlstat
    130. 

  130. 	PTR	sys_poll
    131. 

  131. 	PTR	sys_lseek
    132. 

  132. 	PTR	sys_mips_mmap
    133. 

  133. 	PTR	sys_mprotect			/* 6010 */
    134. 

  134. 	PTR	sys_munmap
    135. 

  135. 	PTR	sys_brk
    136. 

  136. 	PTR	sys_32_rt_sigaction
    137. 

  137. 	PTR	sys_32_rt_sigprocmask
    138. 

  138. 	PTR	compat_sys_ioctl		/* 6015 */
    139. 

  139. 	PTR	sys_pread64
    140. 

  140. 	PTR	sys_pwrite64
    141. 

  141. 	PTR	compat_sys_readv
    142. 

  142. 	PTR	compat_sys_writev
    143. 

  143. 	PTR	sys_access			/* 6020 */
    144. 

  144. 	PTR	sysm_pipe
    145. 

  145. 	PTR	compat_sys_select
    146. 

  146. 	PTR	sys_sched_yield
    147. 

  147. 	PTR	sys_mremap
    148. 

  148. 	PTR	sys_msync			/* 6025 */
    149. 

  149. 	PTR	sys_mincore
    150. 

  150. 	PTR	sys_madvise
    151. 

  151. 	PTR	sys_shmget
    152. 

  152. 	PTR	sys_shmat
    153. 

  153. 	PTR	compat_sys_shmctl			/* 6030 */
    154. 

  154. 	PTR	sys_dup
    155. 

  155. 	PTR	sys_dup2
    156. 

  156. 	PTR	sys_pause
    157. 

  157. 	PTR	compat_sys_nanosleep
    158. 

  158. 	PTR	compat_sys_getitimer		/* 6035 */
    159. 

  159. 	PTR	compat_sys_setitimer
    160. 

  160. 	PTR	sys_alarm
    161. 

  161. 	PTR	sys_getpid
    162. 

  162. 	PTR	sys_32_sendfile
    163. 

  163. 	PTR	sys_socket			/* 6040 */
    164. 

  164. 	PTR	sys_connect
    165. 

  165. 	PTR	sys_accept
    166. 

  166. 	PTR	sys_sendto
    167. 

  167. 	PTR	sys_recvfrom
    168. 

  168. 	PTR	compat_sys_sendmsg		/* 6045 */
    169. 

  169. 	PTR	compat_sys_recvmsg
    170. 

  170. 	PTR	sys_shutdown
    171. 

  171. 	PTR	sys_bind
    172. 

  172. 	PTR	sys_listen
    173. 

  173. 	PTR	sys_getsockname			/* 6050 */
    174. 

  174. 	PTR	sys_getpeername
    175. 

  175. 	PTR	sys_socketpair
    176. 

  176. 	PTR	compat_sys_setsockopt
    177. 

  177. 	PTR	sys_getsockopt
    178. 

  178. 	PTR	sys_clone			/* 6055 */
    179. 

  179. 	PTR	sys_fork
    180. 

  180. 	PTR	sys32_execve
    181. 

  181. 	PTR	sys_exit
    182. 

  182. 	PTR	compat_sys_wait4
    183. 

  183. 	PTR	sys_kill			/* 6060 */
    184. 

  184. 	PTR	sys_32_newuname
    185. 

  185. 	PTR	sys_semget
    186. 

  186. 	PTR	sys_semop
    187. 

  187. 	PTR	sys_n32_semctl
    188. 

  188. 	PTR	sys_shmdt			/* 6065 */
    189. 

  189. 	PTR	sys_msgget
    190. 

  190. 	PTR	sys_n32_msgsnd
    191. 

  191. 	PTR	sys_n32_msgrcv
    192. 

  192. 	PTR	compat_sys_msgctl
    193. 

  193. 	PTR	compat_sys_fcntl		/* 6070 */
    194. 

  194. 	PTR	sys_flock
    195. 

  195. 	PTR	sys_fsync
    196. 

  196. 	PTR	sys_fdatasync
    197. 

  197. 	PTR	sys_truncate
    198. 

  198. 	PTR	sys_ftruncate			/* 6075 */
    199. 

  199. 	PTR	compat_sys_getdents
    200. 

  200. 	PTR	sys_getcwd
    201. 

  201. 	PTR	sys_chdir
    202. 

  202. 	PTR	sys_fchdir
    203. 

  203. 	PTR	sys_rename			/* 6080 */
    204. 

  204. 	PTR	sys_mkdir
    205. 

  205. 	PTR	sys_rmdir
    206. 

  206. 	PTR	sys_creat
    207. 

  207. 	PTR	sys_link
    208. 

  208. 	PTR	sys_unlink			/* 6085 */
    209. 

  209. 	PTR	sys_symlink
    210. 

  210. 	PTR	sys_readlink
    211. 

  211. 	PTR	sys_chmod
    212. 

  212. 	PTR	sys_fchmod
    213. 

  213. 	PTR	sys_chown			/* 6090 */
    214. 

  214. 	PTR	sys_fchown
    215. 

  215. 	PTR	sys_lchown
    216. 

  216. 	PTR	sys_umask
    217. 

  217. 	PTR	compat_sys_gettimeofday
    218. 

  218. 	PTR	compat_sys_getrlimit		/* 6095 */
    219. 

  219. 	PTR	compat_sys_getrusage
    220. 

  220. 	PTR	compat_sys_sysinfo
    221. 

  221. 	PTR	compat_sys_times
    222. 

  222. 	PTR	compat_sys_ptrace
    223. 

  223. 	PTR	sys_getuid			/* 6100 */
    224. 

  224. 	PTR	sys_syslog
    225. 

  225. 	PTR	sys_getgid
    226. 

  226. 	PTR	sys_setuid
    227. 

  227. 	PTR	sys_setgid
    228. 

  228. 	PTR	sys_geteuid			/* 6105 */
    229. 

  229. 	PTR	sys_getegid
    230. 

  230. 	PTR	sys_setpgid
    231. 

  231. 	PTR	sys_getppid
    232. 

  232. 	PTR	sys_getpgrp
    233. 

  233. 	PTR	sys_setsid			/* 6110 */
    234. 

  234. 	PTR	sys_setreuid
    235. 

  235. 	PTR	sys_setregid
    236. 

  236. 	PTR	sys_getgroups
    237. 

  237. 	PTR	sys_setgroups
    238. 

  238. 	PTR	sys_setresuid			/* 6115 */
    239. 

  239. 	PTR	sys_getresuid
    240. 

  240. 	PTR	sys_setresgid
    241. 

  241. 	PTR	sys_getresgid
    242. 

  242. 	PTR	sys_getpgid
    243. 

  243. 	PTR	sys_setfsuid			/* 6120 */
    244. 

  244. 	PTR	sys_setfsgid
    245. 

  245. 	PTR	sys_getsid
    246. 

  246. 	PTR	sys_capget
    247. 

  247. 	PTR	sys_capset
    248. 

  248. 	PTR	sys_32_rt_sigpending		/* 6125 */
    249. 

  249. 	PTR	compat_sys_rt_sigtimedwait
    250. 

  250. 	PTR	sys_32_rt_sigqueueinfo
    251. 

  251. 	PTR	sysn32_rt_sigsuspend
    252. 

  252. 	PTR	sys32_sigaltstack
    253. 

  253. 	PTR	compat_sys_utime		/* 6130 */
    254. 

  254. 	PTR	sys_mknod
    255. 

  255. 	PTR	sys_32_personality
    256. 

  256. 	PTR	compat_sys_ustat
    257. 

  257. 	PTR	compat_sys_statfs
    258. 

  258. 	PTR	compat_sys_fstatfs		/* 6135 */
    259. 

  259. 	PTR	sys_sysfs
    260. 

  260. 	PTR	sys_getpriority
    261. 

  261. 	PTR	sys_setpriority
    262. 

  262. 	PTR	sys_sched_setparam
    263. 

  263. 	PTR	sys_sched_getparam		/* 6140 */
    264. 

  264. 	PTR	sys_sched_setscheduler
    265. 

  265. 	PTR	sys_sched_getscheduler
    266. 

  266. 	PTR	sys_sched_get_priority_max
    267. 

  267. 	PTR	sys_sched_get_priority_min
    268. 

  268. 	PTR	sys_32_sched_rr_get_interval	/* 6145 */
    269. 

  269. 	PTR	sys_mlock
    270. 

  270. 	PTR	sys_munlock
    271. 

  271. 	PTR	sys_mlockall
    272. 

  272. 	PTR	sys_munlockall
    273. 

  273. 	PTR	sys_vhangup			/* 6150 */
    274. 

  274. 	PTR	sys_pivot_root
    275. 

  275. 	PTR	sys_32_sysctl
    276. 

  276. 	PTR	sys_prctl
    277. 

  277. 	PTR	compat_sys_adjtimex
    278. 

  278. 	PTR	compat_sys_setrlimit		/* 6155 */
    279. 

  279. 	PTR	sys_chroot
    280. 

  280. 	PTR	sys_sync
    281. 

  281. 	PTR	sys_acct
    282. 

  282. 	PTR	compat_sys_settimeofday
    283. 

  283. 	PTR	compat_sys_mount		/* 6160 */
    284. 

  284. 	PTR	sys_umount
    285. 

  285. 	PTR	sys_swapon
    286. 

  286. 	PTR	sys_swapoff
    287. 

  287. 	PTR	sys_reboot
    288. 

  288. 	PTR	sys_sethostname			/* 6165 */
    289. 

  289. 	PTR	sys_setdomainname
    290. 

  290. 	PTR	sys_ni_syscall			/* was create_module */
    291. 

  291. 	PTR	sys_init_module
    292. 

  292. 	PTR	sys_delete_module
    293. 

  293. 	PTR	sys_ni_syscall			/* 6170, was get_kernel_syms */
    294. 

  294. 	PTR	sys_ni_syscall			/* was query_module */
    295. 

  295. 	PTR	sys_quotactl
    296. 

  296. 	PTR	compat_sys_nfsservctl
    297. 

  297. 	PTR	sys_ni_syscall			/* res. for getpmsg */
    298. 

  298. 	PTR	sys_ni_syscall			/* 6175  for putpmsg */
    299. 

  299. 	PTR	sys_ni_syscall			/* res. for afs_syscall */
    300. 

  300. 	PTR	sys_ni_syscall			/* res. for security */
    301. 

  301. 	PTR	sys_gettid
    302. 

  302. 	PTR	sys_readahead
    303. 

  303. 	PTR	sys_setxattr			/* 6180 */
    304. 

  304. 	PTR	sys_lsetxattr
    305. 

  305. 	PTR	sys_fsetxattr
    306. 

  306. 	PTR	sys_getxattr
    307. 

  307. 	PTR	sys_lgetxattr
    308. 

  308. 	PTR	sys_fgetxattr			/* 6185 */
    309. 

  309. 	PTR	sys_listxattr
    310. 

  310. 	PTR	sys_llistxattr
    311. 

  311. 	PTR	sys_flistxattr
    312. 

  312. 	PTR	sys_removexattr
    313. 

  313. 	PTR	sys_lremovexattr		/* 6190 */
    314. 

  314. 	PTR	sys_fremovexattr
    315. 

  315. 	PTR	sys_tkill
    316. 

  316. 	PTR	sys_ni_syscall
    317. 

  317. 	PTR	compat_sys_futex
    318. 

  318. 	PTR	compat_sys_sched_setaffinity	/* 6195 */
    319. 

  319. 	PTR	compat_sys_sched_getaffinity
    320. 

  320. 	PTR	sys_cacheflush
    321. 

  321. 	PTR	sys_cachectl
    322. 

  322. 	PTR	sys_sysmips
    323. 

  323. 	PTR	sys_io_setup			/* 6200 */
    324. 

  324. 	PTR	sys_io_destroy
    325. 

  325. 	PTR	sys_io_getevents
    326. 

  326. 	PTR	sys_io_submit
    327. 

  327. 	PTR	sys_io_cancel
    328. 

  328. 	PTR	sys_exit_group			/* 6205 */
    329. 

  329. 	PTR	sys_lookup_dcookie
    330. 

  330. 	PTR	sys_epoll_create
    331. 

  331. 	PTR	sys_epoll_ctl
    332. 

  332. 	PTR	sys_epoll_wait
    333. 

  333. 	PTR	sys_remap_file_pages		/* 6210 */
    334. 

  334. 	PTR	sysn32_rt_sigreturn
    335. 

  335. 	PTR	compat_sys_fcntl64
    336. 

  336. 	PTR	sys_set_tid_address
    337. 

  337. 	PTR	sys_restart_syscall
    338. 

  338. 	PTR	compat_sys_semtimedop			/* 6215 */
    339. 

  339. 	PTR	sys_fadvise64_64
    340. 

  340. 	PTR	compat_sys_statfs64
    341. 

  341. 	PTR	compat_sys_fstatfs64
    342. 

  342. 	PTR	sys_sendfile64
    343. 

  343. 	PTR	compat_sys_timer_create		/* 6220 */
    344. 

  344. 	PTR	compat_sys_timer_settime
    345. 

  345. 	PTR	compat_sys_timer_gettime
    346. 

  346. 	PTR	sys_timer_getoverrun
    347. 

  347. 	PTR	sys_timer_delete
    348. 

  348. 	PTR	compat_sys_clock_settime		/* 6225 */
    349. 

  349. 	PTR	compat_sys_clock_gettime
    350. 

  350. 	PTR	compat_sys_clock_getres
    351. 

  351. 	PTR	compat_sys_clock_nanosleep
    352. 

  352. 	PTR	sys_tgkill
    353. 

  353. 	PTR	compat_sys_utimes		/* 6230 */
    354. 

  354. 	PTR	sys_ni_syscall			/* sys_mbind */
    355. 

  355. 	PTR	sys_ni_syscall			/* sys_get_mempolicy */
    356. 

  356. 	PTR	sys_ni_syscall			/* sys_set_mempolicy */
    357. 

  357. 	PTR	compat_sys_mq_open
    358. 

  358. 	PTR	sys_mq_unlink			/* 6235 */
    359. 

  359. 	PTR	compat_sys_mq_timedsend
    360. 

  360. 	PTR	compat_sys_mq_timedreceive
    361. 

  361. 	PTR	compat_sys_mq_notify
    362. 

  362. 	PTR	compat_sys_mq_getsetattr
    363. 

  363. 	PTR	sys_ni_syscall			/* 6240, sys_vserver */
    364. 

  364. 	PTR	compat_sys_waitid
    365. 

  365. 	PTR	sys_ni_syscall			/* available, was setaltroot */
    366. 

  366. 	PTR	sys_add_key
    367. 

  367. 	PTR	sys_request_key
    368. 

  368. 	PTR	sys_keyctl			/* 6245 */
    369. 

  369. 	PTR	sys_set_thread_area
    370. 

  370. 	PTR	sys_inotify_init
    371. 

  371. 	PTR	sys_inotify_add_watch
    372. 

  372. 	PTR	sys_inotify_rm_watch
    373. 

  373. 	PTR	sys_migrate_pages		/* 6250 */
    374. 

  374. 	PTR	sys_openat
    375. 

  375. 	PTR	sys_mkdirat
    376. 

  376. 	PTR	sys_mknodat
    377. 

  377. 	PTR	sys_fchownat
    378. 

  378. 	PTR	compat_sys_futimesat		/* 6255 */
    379. 

  379. 	PTR	sys_newfstatat
    380. 

  380. 	PTR	sys_unlinkat
    381. 

  381. 	PTR	sys_renameat
    382. 

  382. 	PTR	sys_linkat
    383. 

  383. 	PTR	sys_symlinkat			/* 6260 */
    384. 

  384. 	PTR	sys_readlinkat
    385. 

  385. 	PTR	sys_fchmodat
    386. 

  386. 	PTR	sys_faccessat
    387. 

  387. 	PTR	compat_sys_pselect6
    388. 

  388. 	PTR	sys_ppoll			/* 6265 */
    389. 

  389. 	PTR	sys_unshare
    390. 

  390. 	PTR	sys_splice
    391. 

  391. 	PTR	sys_sync_file_range
    392. 

  392. 	PTR	sys_tee
    393. 

  393. 	PTR	compat_sys_vmsplice		/* 6270 */
    394. 

  394. 	PTR	sys_move_pages
    395. 

  395. 	PTR	compat_sys_set_robust_list
    396. 

  396. 	PTR	compat_sys_get_robust_list
    397. 

  397. 	PTR	compat_sys_kexec_load
    398. 

  398. 	PTR	sys_getcpu			/* 6275 */
    399. 

  399. 	PTR	compat_sys_epoll_pwait
    400. 

  400. 	PTR	sys_ioprio_set
    401. 

  401. 	PTR	sys_ioprio_get
    402. 

  402. 	PTR	compat_sys_utimensat
    403. 

  403. 	PTR	compat_sys_signalfd		/* 5280 */
    404. 

  404. 	PTR	sys_ni_syscall
    405. 

  405. 	PTR	sys_eventfd
    406. 

  406. 	PTR	sys_fallocate
    407. 

  407. 	PTR	sys_timerfd_create
    408. 

  408. 	PTR	sys_timerfd_gettime		/* 5285 */
    409. 

  409. 	PTR	sys_timerfd_settime
    410. 

  410. 	PTR	sys_signalfd4
    411. 

  411. 	PTR	sys_eventfd2
    412. 

  412. 	PTR	sys_epoll_create1
    413. 

  413. 	PTR	sys_dup3			/* 5290 */
    414. 

  414. 	PTR	sys_pipe2
    415. 

  415. 	PTR	sys_inotify_init1
    416. 

  416. 	PTR	sys_preadv
    417. 

  417. 	PTR	sys_pwritev
    418. 

  418. 	.size	sysn32_call_table,.-sysn32_call_table
    419.