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1da177e4 LT |
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 | */ | |
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> | |
048eb582 | 17 | #include <asm/asm-offsets.h> |
1da177e4 LT |
18 | #include <asm/sysmips.h> |
19 | #include <asm/thread_info.h> | |
20 | #include <asm/unistd.h> | |
21 | #include <asm/war.h> | |
22 | ||
23 | #ifndef CONFIG_BINFMT_ELF32 | |
24 | /* Neither O32 nor N32, so define handle_sys here */ | |
25 | #define handle_sys64 handle_sys | |
26 | #endif | |
27 | ||
28 | .align 5 | |
29 | NESTED(handle_sys64, PT_SIZE, sp) | |
30 | #if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) | |
31 | /* | |
32 | * When 32-bit compatibility is configured scall_o32.S | |
33 | * already did this. | |
34 | */ | |
35 | .set noat | |
36 | SAVE_SOME | |
37 | STI | |
38 | .set at | |
39 | #endif | |
40 | ||
41 | dsubu t0, v0, __NR_64_Linux # check syscall number | |
42 | sltiu t0, t0, __NR_64_Linux_syscalls + 1 | |
43 | #if !defined(CONFIG_MIPS32_O32) && !defined(CONFIG_MIPS32_N32) | |
44 | ld t1, PT_EPC(sp) # skip syscall on return | |
45 | daddiu t1, 4 # skip to next instruction | |
46 | sd t1, PT_EPC(sp) | |
47 | #endif | |
48 | beqz t0, illegal_syscall | |
49 | ||
50 | dsll t0, v0, 3 # offset into table | |
51 | ld t2, (sys_call_table - (__NR_64_Linux * 8))(t0) | |
52 | # syscall routine | |
53 | ||
54 | sd a3, PT_R26(sp) # save a3 for syscall restarting | |
55 | ||
56 | li t1, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | |
57 | LONG_L t0, TI_FLAGS($28) # syscall tracing enabled? | |
58 | and t0, t1, t0 | |
59 | bnez t0, syscall_trace_entry | |
60 | ||
61 | jalr t2 # Do The Real Thing (TM) | |
62 | ||
63 | li t0, -EMAXERRNO - 1 # error? | |
64 | sltu t0, t0, v0 | |
65 | sd t0, PT_R7(sp) # set error flag | |
66 | beqz t0, 1f | |
67 | ||
68 | dnegu v0 # error | |
69 | sd v0, PT_R0(sp) # set flag for syscall | |
70 | # restarting | |
71 | 1: sd v0, PT_R2(sp) # result | |
72 | ||
73 | n64_syscall_exit: | |
74 | local_irq_disable # make sure need_resched and | |
75 | # signals dont change between | |
76 | # sampling and return | |
77 | LONG_L a2, TI_FLAGS($28) # current->work | |
78 | li t0, _TIF_ALLWORK_MASK | |
79 | and t0, a2, t0 | |
80 | bnez t0, n64_syscall_exit_work | |
81 | ||
82 | j restore_partial | |
83 | ||
84 | n64_syscall_exit_work: | |
85 | j syscall_exit_work_partial | |
86 | ||
87 | /* ------------------------------------------------------------------------ */ | |
88 | ||
89 | syscall_trace_entry: | |
90 | SAVE_STATIC | |
91 | move s0, t2 | |
92 | move a0, sp | |
93 | li a1, 0 | |
94 | jal do_syscall_trace | |
95 | ||
96 | ld a0, PT_R4(sp) # Restore argument registers | |
97 | ld a1, PT_R5(sp) | |
98 | ld a2, PT_R6(sp) | |
99 | ld a3, PT_R7(sp) | |
100 | ld a4, PT_R8(sp) | |
101 | ld a5, PT_R9(sp) | |
102 | jalr s0 | |
103 | ||
104 | li t0, -EMAXERRNO - 1 # error? | |
105 | sltu t0, t0, v0 | |
106 | sd t0, PT_R7(sp) # set error flag | |
107 | beqz t0, 1f | |
108 | ||
109 | dnegu v0 # error | |
110 | sd v0, PT_R0(sp) # set flag for syscall restarting | |
111 | 1: sd v0, PT_R2(sp) # result | |
112 | ||
113 | j syscall_exit | |
114 | ||
115 | illegal_syscall: | |
116 | /* This also isn't a 64-bit syscall, throw an error. */ | |
117 | li v0, -ENOSYS # error | |
118 | sd v0, PT_R2(sp) | |
119 | li t0, 1 # set error flag | |
120 | sd t0, PT_R7(sp) | |
121 | j n64_syscall_exit | |
122 | END(handle_sys64) | |
123 | ||
124 | LEAF(mips_atomic_set) | |
125 | andi v0, a1, 3 # must be word aligned | |
126 | bnez v0, bad_alignment | |
127 | ||
128 | LONG_L v1, TI_ADDR_LIMIT($28) # in legal address range? | |
129 | LONG_ADDIU a0, a1, 4 | |
130 | or a0, a0, a1 | |
131 | and a0, a0, v1 | |
132 | bltz a0, bad_address | |
133 | ||
134 | #ifdef CONFIG_CPU_HAS_LLSC | |
135 | /* Ok, this is the ll/sc case. World is sane :-) */ | |
136 | 1: ll v0, (a1) | |
137 | move a0, a2 | |
138 | 2: sc a0, (a1) | |
139 | #if R10000_LLSC_WAR | |
140 | beqzl a0, 1b | |
141 | #else | |
142 | beqz a0, 1b | |
143 | #endif | |
144 | ||
145 | .section __ex_table,"a" | |
146 | PTR 1b, bad_stack | |
147 | PTR 2b, bad_stack | |
148 | .previous | |
149 | #else | |
150 | sw a1, 16(sp) | |
151 | sw a2, 20(sp) | |
152 | ||
153 | move a0, sp | |
154 | move a2, a1 | |
155 | li a1, 1 | |
156 | jal do_page_fault | |
157 | ||
158 | lw a1, 16(sp) | |
159 | lw a2, 20(sp) | |
160 | ||
161 | /* | |
162 | * At this point the page should be readable and writable unless | |
163 | * there was no more memory available. | |
164 | */ | |
165 | 1: lw v0, (a1) | |
166 | 2: sw a2, (a1) | |
167 | ||
168 | .section __ex_table,"a" | |
169 | PTR 1b, no_mem | |
170 | PTR 2b, no_mem | |
171 | .previous | |
172 | #endif | |
173 | ||
174 | sd zero, PT_R7(sp) # success | |
175 | sd v0, PT_R2(sp) # result | |
176 | ||
177 | /* Success, so skip usual error handling garbage. */ | |
178 | li t0, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | |
179 | LONG_L a2, TI_FLAGS($28) # syscall tracing enabled? | |
180 | and t0, a2, t0 | |
181 | bnez t0, 1f | |
182 | ||
183 | j n64_syscall_exit | |
184 | ||
185 | 1: SAVE_STATIC | |
186 | move a0, sp | |
187 | li a1, 1 | |
188 | jal do_syscall_trace | |
189 | j syscall_exit | |
190 | ||
191 | no_mem: li v0, -ENOMEM | |
192 | jr ra | |
193 | ||
194 | bad_address: | |
195 | li v0, -EFAULT | |
196 | jr ra | |
197 | ||
198 | bad_alignment: | |
199 | li v0, -EINVAL | |
200 | jr ra | |
201 | END(mips_atomic_set) | |
202 | ||
203 | LEAF(sys_sysmips) | |
204 | beq a0, MIPS_ATOMIC_SET, mips_atomic_set | |
205 | j _sys_sysmips | |
206 | END(sys_sysmips) | |
207 | ||
208 | .align 3 | |
209 | sys_call_table: | |
210 | PTR sys_read /* 5000 */ | |
211 | PTR sys_write | |
212 | PTR sys_open | |
213 | PTR sys_close | |
214 | PTR sys_newstat | |
215 | PTR sys_newfstat /* 5005 */ | |
216 | PTR sys_newlstat | |
217 | PTR sys_poll | |
218 | PTR sys_lseek | |
219 | PTR old_mmap | |
220 | PTR sys_mprotect /* 5010 */ | |
221 | PTR sys_munmap | |
222 | PTR sys_brk | |
223 | PTR sys_rt_sigaction | |
224 | PTR sys_rt_sigprocmask | |
225 | PTR sys_ioctl /* 5015 */ | |
226 | PTR sys_pread64 | |
227 | PTR sys_pwrite64 | |
228 | PTR sys_readv | |
229 | PTR sys_writev | |
230 | PTR sys_access /* 5020 */ | |
231 | PTR sys_pipe | |
232 | PTR sys_select | |
233 | PTR sys_sched_yield | |
234 | PTR sys_mremap | |
235 | PTR sys_msync /* 5025 */ | |
236 | PTR sys_mincore | |
237 | PTR sys_madvise | |
238 | PTR sys_shmget | |
239 | PTR sys_shmat | |
240 | PTR sys_shmctl /* 5030 */ | |
241 | PTR sys_dup | |
242 | PTR sys_dup2 | |
243 | PTR sys_pause | |
244 | PTR sys_nanosleep | |
245 | PTR sys_getitimer /* 5035 */ | |
246 | PTR sys_setitimer | |
247 | PTR sys_alarm | |
248 | PTR sys_getpid | |
249 | PTR sys_sendfile64 | |
250 | PTR sys_socket /* 5040 */ | |
251 | PTR sys_connect | |
252 | PTR sys_accept | |
253 | PTR sys_sendto | |
254 | PTR sys_recvfrom | |
255 | PTR sys_sendmsg /* 5045 */ | |
256 | PTR sys_recvmsg | |
257 | PTR sys_shutdown | |
258 | PTR sys_bind | |
259 | PTR sys_listen | |
260 | PTR sys_getsockname /* 5050 */ | |
261 | PTR sys_getpeername | |
262 | PTR sys_socketpair | |
263 | PTR sys_setsockopt | |
264 | PTR sys_getsockopt | |
265 | PTR sys_clone /* 5055 */ | |
266 | PTR sys_fork | |
267 | PTR sys_execve | |
268 | PTR sys_exit | |
269 | PTR sys_wait4 | |
270 | PTR sys_kill /* 5060 */ | |
271 | PTR sys_newuname | |
272 | PTR sys_semget | |
273 | PTR sys_semop | |
274 | PTR sys_semctl | |
275 | PTR sys_shmdt /* 5065 */ | |
276 | PTR sys_msgget | |
277 | PTR sys_msgsnd | |
278 | PTR sys_msgrcv | |
279 | PTR sys_msgctl | |
280 | PTR sys_fcntl /* 5070 */ | |
281 | PTR sys_flock | |
282 | PTR sys_fsync | |
283 | PTR sys_fdatasync | |
284 | PTR sys_truncate | |
285 | PTR sys_ftruncate /* 5075 */ | |
286 | PTR sys_getdents | |
287 | PTR sys_getcwd | |
288 | PTR sys_chdir | |
289 | PTR sys_fchdir | |
290 | PTR sys_rename /* 5080 */ | |
291 | PTR sys_mkdir | |
292 | PTR sys_rmdir | |
293 | PTR sys_creat | |
294 | PTR sys_link | |
295 | PTR sys_unlink /* 5085 */ | |
296 | PTR sys_symlink | |
297 | PTR sys_readlink | |
298 | PTR sys_chmod | |
299 | PTR sys_fchmod | |
300 | PTR sys_chown /* 5090 */ | |
301 | PTR sys_fchown | |
302 | PTR sys_lchown | |
303 | PTR sys_umask | |
304 | PTR sys_gettimeofday | |
305 | PTR sys_getrlimit /* 5095 */ | |
306 | PTR sys_getrusage | |
307 | PTR sys_sysinfo | |
308 | PTR sys_times | |
309 | PTR sys_ptrace | |
310 | PTR sys_getuid /* 5100 */ | |
311 | PTR sys_syslog | |
312 | PTR sys_getgid | |
313 | PTR sys_setuid | |
314 | PTR sys_setgid | |
315 | PTR sys_geteuid /* 5105 */ | |
316 | PTR sys_getegid | |
317 | PTR sys_setpgid | |
318 | PTR sys_getppid | |
319 | PTR sys_getpgrp | |
320 | PTR sys_setsid /* 5110 */ | |
321 | PTR sys_setreuid | |
322 | PTR sys_setregid | |
323 | PTR sys_getgroups | |
324 | PTR sys_setgroups | |
325 | PTR sys_setresuid /* 5115 */ | |
326 | PTR sys_getresuid | |
327 | PTR sys_setresgid | |
328 | PTR sys_getresgid | |
329 | PTR sys_getpgid | |
330 | PTR sys_setfsuid /* 5120 */ | |
331 | PTR sys_setfsgid | |
332 | PTR sys_getsid | |
333 | PTR sys_capget | |
334 | PTR sys_capset | |
335 | PTR sys_rt_sigpending /* 5125 */ | |
336 | PTR sys_rt_sigtimedwait | |
337 | PTR sys_rt_sigqueueinfo | |
338 | PTR sys_rt_sigsuspend | |
339 | PTR sys_sigaltstack | |
340 | PTR sys_utime /* 5130 */ | |
341 | PTR sys_mknod | |
342 | PTR sys_personality | |
343 | PTR sys_ustat | |
344 | PTR sys_statfs | |
345 | PTR sys_fstatfs /* 5135 */ | |
346 | PTR sys_sysfs | |
347 | PTR sys_getpriority | |
348 | PTR sys_setpriority | |
349 | PTR sys_sched_setparam | |
350 | PTR sys_sched_getparam /* 5140 */ | |
351 | PTR sys_sched_setscheduler | |
352 | PTR sys_sched_getscheduler | |
353 | PTR sys_sched_get_priority_max | |
354 | PTR sys_sched_get_priority_min | |
355 | PTR sys_sched_rr_get_interval /* 5145 */ | |
356 | PTR sys_mlock | |
357 | PTR sys_munlock | |
358 | PTR sys_mlockall | |
359 | PTR sys_munlockall | |
360 | PTR sys_vhangup /* 5150 */ | |
361 | PTR sys_pivot_root | |
362 | PTR sys_sysctl | |
363 | PTR sys_prctl | |
364 | PTR sys_adjtimex | |
365 | PTR sys_setrlimit /* 5155 */ | |
366 | PTR sys_chroot | |
367 | PTR sys_sync | |
368 | PTR sys_acct | |
369 | PTR sys_settimeofday | |
370 | PTR sys_mount /* 5160 */ | |
371 | PTR sys_umount | |
372 | PTR sys_swapon | |
373 | PTR sys_swapoff | |
374 | PTR sys_reboot | |
375 | PTR sys_sethostname /* 5165 */ | |
376 | PTR sys_setdomainname | |
377 | PTR sys_ni_syscall /* was create_module */ | |
378 | PTR sys_init_module | |
379 | PTR sys_delete_module | |
380 | PTR sys_ni_syscall /* 5170, was get_kernel_syms */ | |
381 | PTR sys_ni_syscall /* was query_module */ | |
382 | PTR sys_quotactl | |
383 | PTR sys_nfsservctl | |
384 | PTR sys_ni_syscall /* res. for getpmsg */ | |
385 | PTR sys_ni_syscall /* 5175 for putpmsg */ | |
386 | PTR sys_ni_syscall /* res. for afs_syscall */ | |
387 | PTR sys_ni_syscall /* res. for security */ | |
388 | PTR sys_gettid | |
389 | PTR sys_readahead | |
390 | PTR sys_setxattr /* 5180 */ | |
391 | PTR sys_lsetxattr | |
392 | PTR sys_fsetxattr | |
393 | PTR sys_getxattr | |
394 | PTR sys_lgetxattr | |
395 | PTR sys_fgetxattr /* 5185 */ | |
396 | PTR sys_listxattr | |
397 | PTR sys_llistxattr | |
398 | PTR sys_flistxattr | |
399 | PTR sys_removexattr | |
400 | PTR sys_lremovexattr /* 5190 */ | |
401 | PTR sys_fremovexattr | |
402 | PTR sys_tkill | |
403 | PTR sys_ni_syscall | |
404 | PTR sys_futex | |
405 | PTR sys_sched_setaffinity /* 5195 */ | |
406 | PTR sys_sched_getaffinity | |
407 | PTR sys_cacheflush | |
408 | PTR sys_cachectl | |
409 | PTR sys_sysmips | |
410 | PTR sys_io_setup /* 5200 */ | |
411 | PTR sys_io_destroy | |
412 | PTR sys_io_getevents | |
413 | PTR sys_io_submit | |
414 | PTR sys_io_cancel | |
415 | PTR sys_exit_group /* 5205 */ | |
416 | PTR sys_lookup_dcookie | |
417 | PTR sys_epoll_create | |
418 | PTR sys_epoll_ctl | |
419 | PTR sys_epoll_wait | |
420 | PTR sys_remap_file_pages /* 5210 */ | |
421 | PTR sys_rt_sigreturn | |
422 | PTR sys_set_tid_address | |
423 | PTR sys_restart_syscall | |
424 | PTR sys_semtimedop | |
425 | PTR sys_fadvise64_64 /* 5215 */ | |
426 | PTR sys_timer_create | |
427 | PTR sys_timer_settime | |
428 | PTR sys_timer_gettime | |
429 | PTR sys_timer_getoverrun | |
430 | PTR sys_timer_delete /* 5220 */ | |
431 | PTR sys_clock_settime | |
432 | PTR sys_clock_gettime | |
433 | PTR sys_clock_getres | |
434 | PTR sys_clock_nanosleep | |
435 | PTR sys_tgkill /* 5225 */ | |
436 | PTR sys_utimes | |
437 | PTR sys_mbind | |
438 | PTR sys_ni_syscall /* sys_get_mempolicy */ | |
439 | PTR sys_ni_syscall /* sys_set_mempolicy */ | |
440 | PTR sys_mq_open /* 5230 */ | |
441 | PTR sys_mq_unlink | |
442 | PTR sys_mq_timedsend | |
443 | PTR sys_mq_timedreceive | |
444 | PTR sys_mq_notify | |
445 | PTR sys_mq_getsetattr /* 5235 */ | |
446 | PTR sys_ni_syscall /* sys_vserver */ | |
447 | PTR sys_waitid | |
448 | PTR sys_ni_syscall /* available, was setaltroot */ | |
449 | PTR sys_add_key | |
450 | PTR sys_request_key /* 5240 */ | |
451 | PTR sys_keyctl |