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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/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/thread_info.h> | |
18 | #include <asm/unistd.h> | |
19 | ||
20 | /* This duplicates the definition from <linux/sched.h> */ | |
21 | #define PT_TRACESYS 0x00000002 /* tracing system calls */ | |
22 | ||
23 | /* This duplicates the definition from <asm/signal.h> */ | |
24 | #define SIGILL 4 /* Illegal instruction (ANSI). */ | |
25 | ||
26 | #ifndef CONFIG_MIPS32_O32 | |
27 | /* No O32, so define handle_sys here */ | |
28 | #define handle_sysn32 handle_sys | |
29 | #endif | |
30 | ||
31 | .align 5 | |
32 | NESTED(handle_sysn32, PT_SIZE, sp) | |
33 | #ifndef CONFIG_MIPS32_O32 | |
34 | .set noat | |
35 | SAVE_SOME | |
36 | STI | |
37 | .set at | |
38 | #endif | |
39 | ||
40 | dsubu t0, v0, __NR_N32_Linux # check syscall number | |
41 | sltiu t0, t0, __NR_N32_Linux_syscalls + 1 | |
42 | ||
43 | #ifndef CONFIG_MIPS32_O32 | |
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, not_n32_scall | |
49 | ||
50 | dsll t0, v0, 3 # offset into table | |
51 | ld t2, (sysn32_call_table - (__NR_N32_Linux * 8))(t0) | |
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, n32_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 restarting | |
69 | 1: sd v0, PT_R2(sp) # result | |
70 | ||
71 | local_irq_disable # make sure need_resched and | |
72 | # signals dont change between | |
73 | # sampling and return | |
74 | LONG_L a2, TI_FLAGS($28) # current->work | |
75 | li t0, _TIF_ALLWORK_MASK | |
76 | and t0, a2, t0 | |
77 | bnez t0, n32_syscall_exit_work | |
78 | ||
79 | j restore_partial | |
80 | ||
81 | n32_syscall_exit_work: | |
82 | j syscall_exit_work_partial | |
83 | ||
84 | /* ------------------------------------------------------------------------ */ | |
85 | ||
86 | n32_syscall_trace_entry: | |
87 | SAVE_STATIC | |
88 | move s0, t2 | |
89 | move a0, sp | |
90 | li a1, 0 | |
91 | jal do_syscall_trace | |
92 | ||
93 | ld a0, PT_R4(sp) # Restore argument registers | |
94 | ld a1, PT_R5(sp) | |
95 | ld a2, PT_R6(sp) | |
96 | ld a3, PT_R7(sp) | |
97 | ld a4, PT_R8(sp) | |
98 | ld a5, PT_R9(sp) | |
99 | jalr s0 | |
100 | ||
101 | li t0, -EMAXERRNO - 1 # error? | |
102 | sltu t0, t0, v0 | |
103 | sd t0, PT_R7(sp) # set error flag | |
104 | beqz t0, 1f | |
105 | ||
106 | dnegu v0 # error | |
107 | sd v0, PT_R0(sp) # set flag for syscall restarting | |
108 | 1: sd v0, PT_R2(sp) # result | |
109 | ||
110 | j syscall_exit | |
111 | ||
112 | not_n32_scall: | |
113 | /* This is not an n32 compatibility syscall, pass it on to | |
114 | the n64 syscall handlers. */ | |
115 | j handle_sys64 | |
116 | ||
117 | END(handle_sysn32) | |
118 | ||
119 | EXPORT(sysn32_call_table) | |
120 | PTR sys_read /* 6000 */ | |
121 | PTR sys_write | |
122 | PTR sys_open | |
123 | PTR sys_close | |
124 | PTR sys_newstat | |
125 | PTR sys_newfstat /* 6005 */ | |
126 | PTR sys_newlstat | |
127 | PTR sys_poll | |
128 | PTR sys_lseek | |
129 | PTR old_mmap | |
130 | PTR sys_mprotect /* 6010 */ | |
131 | PTR sys_munmap | |
132 | PTR sys_brk | |
133 | PTR sys32_rt_sigaction | |
134 | PTR sys32_rt_sigprocmask | |
135 | PTR compat_sys_ioctl /* 6015 */ | |
136 | PTR sys_pread64 | |
137 | PTR sys_pwrite64 | |
138 | PTR compat_sys_readv | |
139 | PTR compat_sys_writev | |
140 | PTR sys_access /* 6020 */ | |
141 | PTR sys_pipe | |
142 | PTR compat_sys_select | |
143 | PTR sys_sched_yield | |
144 | PTR sys_mremap | |
145 | PTR sys_msync /* 6025 */ | |
146 | PTR sys_mincore | |
147 | PTR sys_madvise | |
148 | PTR sys_shmget | |
149 | PTR sys32_shmat | |
150 | PTR sys_shmctl /* 6030 */ | |
151 | PTR sys_dup | |
152 | PTR sys_dup2 | |
153 | PTR sys_pause | |
154 | PTR compat_sys_nanosleep | |
155 | PTR compat_sys_getitimer /* 6035 */ | |
156 | PTR compat_sys_setitimer | |
157 | PTR sys_alarm | |
158 | PTR sys_getpid | |
159 | PTR sys32_sendfile | |
160 | PTR sys_socket /* 6040 */ | |
161 | PTR sys_connect | |
162 | PTR sys_accept | |
163 | PTR sys_sendto | |
164 | PTR sys_recvfrom | |
165 | PTR compat_sys_sendmsg /* 6045 */ | |
166 | PTR compat_sys_recvmsg | |
167 | PTR sys_shutdown | |
168 | PTR sys_bind | |
169 | PTR sys_listen | |
170 | PTR sys_getsockname /* 6050 */ | |
171 | PTR sys_getpeername | |
172 | PTR sys_socketpair | |
173 | PTR compat_sys_setsockopt | |
174 | PTR sys_getsockopt | |
175 | PTR sys_clone /* 6055 */ | |
176 | PTR sys_fork | |
177 | PTR sys32_execve | |
178 | PTR sys_exit | |
179 | PTR sys32_wait4 | |
180 | PTR sys_kill /* 6060 */ | |
181 | PTR sys32_newuname | |
182 | PTR sys_semget | |
183 | PTR sys_semop | |
184 | PTR sys_semctl | |
185 | PTR sys_shmdt /* 6065 */ | |
186 | PTR sys_msgget | |
187 | PTR sys_msgsnd | |
188 | PTR sys_msgrcv | |
189 | PTR sys_msgctl | |
190 | PTR compat_sys_fcntl /* 6070 */ | |
191 | PTR sys_flock | |
192 | PTR sys_fsync | |
193 | PTR sys_fdatasync | |
194 | PTR sys_truncate | |
195 | PTR sys_ftruncate /* 6075 */ | |
196 | PTR sys32_getdents | |
197 | PTR sys_getcwd | |
198 | PTR sys_chdir | |
199 | PTR sys_fchdir | |
200 | PTR sys_rename /* 6080 */ | |
201 | PTR sys_mkdir | |
202 | PTR sys_rmdir | |
203 | PTR sys_creat | |
204 | PTR sys_link | |
205 | PTR sys_unlink /* 6085 */ | |
206 | PTR sys_symlink | |
207 | PTR sys_readlink | |
208 | PTR sys_chmod | |
209 | PTR sys_fchmod | |
210 | PTR sys_chown /* 6090 */ | |
211 | PTR sys_fchown | |
212 | PTR sys_lchown | |
213 | PTR sys_umask | |
214 | PTR sys32_gettimeofday | |
215 | PTR compat_sys_getrlimit /* 6095 */ | |
216 | PTR compat_sys_getrusage | |
217 | PTR sys32_sysinfo | |
218 | PTR compat_sys_times | |
219 | PTR sys_ptrace | |
220 | PTR sys_getuid /* 6100 */ | |
221 | PTR sys_syslog | |
222 | PTR sys_getgid | |
223 | PTR sys_setuid | |
224 | PTR sys_setgid | |
225 | PTR sys_geteuid /* 6105 */ | |
226 | PTR sys_getegid | |
227 | PTR sys_setpgid | |
228 | PTR sys_getppid | |
229 | PTR sys_getpgrp | |
230 | PTR sys_setsid /* 6110 */ | |
231 | PTR sys_setreuid | |
232 | PTR sys_setregid | |
233 | PTR sys_getgroups | |
234 | PTR sys_setgroups | |
235 | PTR sys_setresuid /* 6115 */ | |
236 | PTR sys_getresuid | |
237 | PTR sys_setresgid | |
238 | PTR sys_getresgid | |
239 | PTR sys_getpgid | |
240 | PTR sys_setfsuid /* 6120 */ | |
241 | PTR sys_setfsgid | |
242 | PTR sys_getsid | |
243 | PTR sys_capget | |
244 | PTR sys_capset | |
245 | PTR sys32_rt_sigpending /* 6125 */ | |
246 | PTR compat_sys_rt_sigtimedwait | |
247 | PTR sys32_rt_sigqueueinfo | |
248 | PTR sys32_rt_sigsuspend | |
249 | PTR sys32_sigaltstack | |
250 | PTR compat_sys_utime /* 6130 */ | |
251 | PTR sys_mknod | |
252 | PTR sys32_personality | |
253 | PTR sys_ustat | |
254 | PTR compat_sys_statfs | |
255 | PTR compat_sys_fstatfs /* 6135 */ | |
256 | PTR sys_sysfs | |
257 | PTR sys_getpriority | |
258 | PTR sys_setpriority | |
259 | PTR sys_sched_setparam | |
260 | PTR sys_sched_getparam /* 6140 */ | |
261 | PTR sys_sched_setscheduler | |
262 | PTR sys_sched_getscheduler | |
263 | PTR sys_sched_get_priority_max | |
264 | PTR sys_sched_get_priority_min | |
265 | PTR sys32_sched_rr_get_interval /* 6145 */ | |
266 | PTR sys_mlock | |
267 | PTR sys_munlock | |
268 | PTR sys_mlockall | |
269 | PTR sys_munlockall | |
270 | PTR sys_vhangup /* 6150 */ | |
271 | PTR sys_pivot_root | |
272 | PTR sys32_sysctl | |
273 | PTR sys_prctl | |
274 | PTR sys32_adjtimex | |
275 | PTR compat_sys_setrlimit /* 6155 */ | |
276 | PTR sys_chroot | |
277 | PTR sys_sync | |
278 | PTR sys_acct | |
279 | PTR sys32_settimeofday | |
280 | PTR sys_mount /* 6160 */ | |
281 | PTR sys_umount | |
282 | PTR sys_swapon | |
283 | PTR sys_swapoff | |
284 | PTR sys_reboot | |
285 | PTR sys_sethostname /* 6165 */ | |
286 | PTR sys_setdomainname | |
287 | PTR sys_ni_syscall /* was create_module */ | |
288 | PTR sys_init_module | |
289 | PTR sys_delete_module | |
290 | PTR sys_ni_syscall /* 6170, was get_kernel_syms */ | |
291 | PTR sys_ni_syscall /* was query_module */ | |
292 | PTR sys_quotactl | |
293 | PTR sys_nfsservctl | |
294 | PTR sys_ni_syscall /* res. for getpmsg */ | |
295 | PTR sys_ni_syscall /* 6175 for putpmsg */ | |
296 | PTR sys_ni_syscall /* res. for afs_syscall */ | |
297 | PTR sys_ni_syscall /* res. for security */ | |
298 | PTR sys_gettid | |
299 | PTR sys32_readahead | |
300 | PTR sys_setxattr /* 6180 */ | |
301 | PTR sys_lsetxattr | |
302 | PTR sys_fsetxattr | |
303 | PTR sys_getxattr | |
304 | PTR sys_lgetxattr | |
305 | PTR sys_fgetxattr /* 6185 */ | |
306 | PTR sys_listxattr | |
307 | PTR sys_llistxattr | |
308 | PTR sys_flistxattr | |
309 | PTR sys_removexattr | |
310 | PTR sys_lremovexattr /* 6190 */ | |
311 | PTR sys_fremovexattr | |
312 | PTR sys_tkill | |
313 | PTR sys_ni_syscall | |
314 | PTR compat_sys_futex | |
315 | PTR compat_sys_sched_setaffinity /* 6195 */ | |
316 | PTR compat_sys_sched_getaffinity | |
317 | PTR sys_cacheflush | |
318 | PTR sys_cachectl | |
319 | PTR sys_sysmips | |
320 | PTR sys_io_setup /* 6200 */ | |
321 | PTR sys_io_destroy | |
322 | PTR sys_io_getevents | |
323 | PTR sys_io_submit | |
324 | PTR sys_io_cancel | |
325 | PTR sys_exit_group /* 6205 */ | |
326 | PTR sys_lookup_dcookie | |
327 | PTR sys_epoll_create | |
328 | PTR sys_epoll_ctl | |
329 | PTR sys_epoll_wait | |
330 | PTR sys_remap_file_pages /* 6210 */ | |
331 | PTR sysn32_rt_sigreturn | |
332 | PTR sys_fcntl | |
333 | PTR sys_set_tid_address | |
334 | PTR sys_restart_syscall | |
335 | PTR sys_semtimedop /* 6215 */ | |
336 | PTR sys_fadvise64_64 | |
337 | PTR compat_sys_statfs64 | |
338 | PTR compat_sys_fstatfs64 | |
339 | PTR sys_sendfile64 | |
340 | PTR sys_timer_create /* 6220 */ | |
341 | PTR sys_timer_settime | |
342 | PTR sys_timer_gettime | |
343 | PTR sys_timer_getoverrun | |
344 | PTR sys_timer_delete | |
345 | PTR sys_clock_settime /* 6225 */ | |
346 | PTR sys_clock_gettime | |
347 | PTR sys_clock_getres | |
348 | PTR sys_clock_nanosleep | |
349 | PTR sys_tgkill | |
350 | PTR compat_sys_utimes /* 6230 */ | |
351 | PTR sys_ni_syscall /* sys_mbind */ | |
352 | PTR sys_ni_syscall /* sys_get_mempolicy */ | |
353 | PTR sys_ni_syscall /* sys_set_mempolicy */ | |
354 | PTR compat_sys_mq_open | |
355 | PTR sys_mq_unlink /* 6235 */ | |
356 | PTR compat_sys_mq_timedsend | |
357 | PTR compat_sys_mq_timedreceive | |
358 | PTR compat_sys_mq_notify | |
359 | PTR compat_sys_mq_getsetattr | |
360 | PTR sys_ni_syscall /* 6240, sys_vserver */ | |
361 | PTR sys_waitid | |
362 | PTR sys_ni_syscall /* available, was setaltroot */ | |
363 | PTR sys_add_key | |
364 | PTR sys_request_key | |
365 | PTR sys_keyctl /* 6245 */ |