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9a8fd558 CZ |
1 | /* |
2 | * include/asm-xtensa/unistd.h | |
3 | * | |
4 | * This file is subject to the terms and conditions of the GNU General Public | |
5 | * License. See the file "COPYING" in the main directory of this archive | |
6 | * for more details. | |
7 | * | |
8 | * Copyright (C) 2001 - 2005 Tensilica Inc. | |
9 | */ | |
10 | ||
11 | #ifndef _XTENSA_UNISTD_H | |
12 | #define _XTENSA_UNISTD_H | |
13 | ||
9a8fd558 CZ |
14 | #define __NR_spill 0 |
15 | #define __NR_exit 1 | |
9a8fd558 CZ |
16 | #define __NR_read 3 |
17 | #define __NR_write 4 | |
18 | #define __NR_open 5 | |
19 | #define __NR_close 6 | |
9a8fd558 CZ |
20 | #define __NR_creat 8 |
21 | #define __NR_link 9 | |
22 | #define __NR_unlink 10 | |
23 | #define __NR_execve 11 | |
24 | #define __NR_chdir 12 | |
9a8fd558 CZ |
25 | #define __NR_mknod 14 |
26 | #define __NR_chmod 15 | |
27 | #define __NR_lchown 16 | |
28 | #define __NR_break 17 | |
9a8fd558 CZ |
29 | #define __NR_lseek 19 |
30 | #define __NR_getpid 20 | |
31 | #define __NR_mount 21 | |
9a8fd558 CZ |
32 | #define __NR_setuid 23 |
33 | #define __NR_getuid 24 | |
9a8fd558 | 34 | #define __NR_ptrace 26 |
9a8fd558 CZ |
35 | #define __NR_utime 30 |
36 | #define __NR_stty 31 | |
37 | #define __NR_gtty 32 | |
38 | #define __NR_access 33 | |
9a8fd558 CZ |
39 | #define __NR_ftime 35 |
40 | #define __NR_sync 36 | |
41 | #define __NR_kill 37 | |
42 | #define __NR_rename 38 | |
43 | #define __NR_mkdir 39 | |
44 | #define __NR_rmdir 40 | |
45 | #define __NR_dup 41 | |
46 | #define __NR_pipe 42 | |
47 | #define __NR_times 43 | |
48 | #define __NR_prof 44 | |
49 | #define __NR_brk 45 | |
50 | #define __NR_setgid 46 | |
51 | #define __NR_getgid 47 | |
52 | #define __NR_signal 48 | |
53 | #define __NR_geteuid 49 | |
54 | #define __NR_getegid 50 | |
55 | #define __NR_acct 51 | |
9a8fd558 CZ |
56 | #define __NR_lock 53 |
57 | #define __NR_ioctl 54 | |
58 | #define __NR_fcntl 55 | |
9a8fd558 CZ |
59 | #define __NR_setpgid 57 |
60 | #define __NR_ulimit 58 | |
9a8fd558 CZ |
61 | #define __NR_umask 60 |
62 | #define __NR_chroot 61 | |
63 | #define __NR_ustat 62 | |
64 | #define __NR_dup2 63 | |
65 | #define __NR_getppid 64 | |
9a8fd558 CZ |
66 | #define __NR_setsid 66 |
67 | #define __NR_sigaction 67 | |
9a8fd558 CZ |
68 | #define __NR_setreuid 70 |
69 | #define __NR_setregid 71 | |
70 | #define __NR_sigsuspend 72 | |
71 | #define __NR_sigpending 73 | |
72 | #define __NR_sethostname 74 | |
73 | #define __NR_setrlimit 75 | |
74 | #define __NR_getrlimit 76 /* Back compatible 2Gig limited rlimit */ | |
75 | #define __NR_getrusage 77 | |
76 | #define __NR_gettimeofday 78 | |
77 | #define __NR_settimeofday 79 | |
78 | #define __NR_getgroups 80 | |
79 | #define __NR_setgroups 81 | |
80 | #define __NR_select 82 | |
81 | #define __NR_symlink 83 | |
9a8fd558 CZ |
82 | #define __NR_readlink 85 |
83 | #define __NR_uselib 86 | |
84 | #define __NR_swapon 87 | |
85 | #define __NR_reboot 88 | |
9a8fd558 CZ |
86 | #define __NR_munmap 91 |
87 | #define __NR_truncate 92 | |
88 | #define __NR_ftruncate 93 | |
89 | #define __NR_fchmod 94 | |
90 | #define __NR_fchown 95 | |
91 | #define __NR_getpriority 96 | |
92 | #define __NR_setpriority 97 | |
93 | #define __NR_profil 98 | |
94 | #define __NR_statfs 99 | |
95 | #define __NR_fstatfs 100 | |
96 | #define __NR_ioperm 101 | |
9a8fd558 CZ |
97 | #define __NR_syslog 103 |
98 | #define __NR_setitimer 104 | |
99 | #define __NR_getitimer 105 | |
100 | #define __NR_stat 106 | |
101 | #define __NR_lstat 107 | |
102 | #define __NR_fstat 108 | |
9a8fd558 CZ |
103 | #define __NR_iopl 110 |
104 | #define __NR_vhangup 111 | |
105 | #define __NR_idle 112 | |
9a8fd558 CZ |
106 | #define __NR_wait4 114 |
107 | #define __NR_swapoff 115 | |
108 | #define __NR_sysinfo 116 | |
9a8fd558 CZ |
109 | #define __NR_fsync 118 |
110 | #define __NR_sigreturn 119 | |
111 | #define __NR_clone 120 | |
112 | #define __NR_setdomainname 121 | |
113 | #define __NR_uname 122 | |
114 | #define __NR_modify_ldt 123 | |
115 | #define __NR_adjtimex 124 | |
116 | #define __NR_mprotect 125 | |
9a8fd558 CZ |
117 | #define __NR_create_module 127 |
118 | #define __NR_init_module 128 | |
119 | #define __NR_delete_module 129 | |
9a8fd558 CZ |
120 | #define __NR_quotactl 131 |
121 | #define __NR_getpgid 132 | |
122 | #define __NR_fchdir 133 | |
123 | #define __NR_bdflush 134 | |
124 | #define __NR_sysfs 135 | |
125 | #define __NR_personality 136 | |
9a8fd558 CZ |
126 | #define __NR_setfsuid 138 |
127 | #define __NR_setfsgid 139 | |
128 | #define __NR__llseek 140 | |
129 | #define __NR_getdents 141 | |
130 | #define __NR__newselect 142 | |
131 | #define __NR_flock 143 | |
132 | #define __NR_msync 144 | |
133 | #define __NR_readv 145 | |
134 | #define __NR_writev 146 | |
135 | #define __NR_cacheflush 147 | |
136 | #define __NR_cachectl 148 | |
137 | #define __NR_sysxtensa 149 | |
138 | #define __NR_sysdummy 150 | |
139 | #define __NR_getsid 151 | |
140 | #define __NR_fdatasync 152 | |
141 | #define __NR__sysctl 153 | |
142 | #define __NR_mlock 154 | |
143 | #define __NR_munlock 155 | |
144 | #define __NR_mlockall 156 | |
145 | #define __NR_munlockall 157 | |
146 | #define __NR_sched_setparam 158 | |
147 | #define __NR_sched_getparam 159 | |
148 | #define __NR_sched_setscheduler 160 | |
149 | #define __NR_sched_getscheduler 161 | |
150 | #define __NR_sched_yield 162 | |
151 | #define __NR_sched_get_priority_max 163 | |
152 | #define __NR_sched_get_priority_min 164 | |
153 | #define __NR_sched_rr_get_interval 165 | |
154 | #define __NR_nanosleep 166 | |
155 | #define __NR_mremap 167 | |
156 | #define __NR_accept 168 | |
157 | #define __NR_bind 169 | |
158 | #define __NR_connect 170 | |
159 | #define __NR_getpeername 171 | |
160 | #define __NR_getsockname 172 | |
161 | #define __NR_getsockopt 173 | |
162 | #define __NR_listen 174 | |
163 | #define __NR_recv 175 | |
164 | #define __NR_recvfrom 176 | |
165 | #define __NR_recvmsg 177 | |
166 | #define __NR_send 178 | |
167 | #define __NR_sendmsg 179 | |
168 | #define __NR_sendto 180 | |
169 | #define __NR_setsockopt 181 | |
170 | #define __NR_shutdown 182 | |
171 | #define __NR_socket 183 | |
172 | #define __NR_socketpair 184 | |
173 | #define __NR_setresuid 185 | |
174 | #define __NR_getresuid 186 | |
175 | #define __NR_query_module 187 | |
176 | #define __NR_poll 188 | |
177 | #define __NR_nfsservctl 189 | |
178 | #define __NR_setresgid 190 | |
179 | #define __NR_getresgid 191 | |
180 | #define __NR_prctl 192 | |
181 | #define __NR_rt_sigreturn 193 | |
182 | #define __NR_rt_sigaction 194 | |
183 | #define __NR_rt_sigprocmask 195 | |
184 | #define __NR_rt_sigpending 196 | |
185 | #define __NR_rt_sigtimedwait 197 | |
186 | #define __NR_rt_sigqueueinfo 198 | |
187 | #define __NR_rt_sigsuspend 199 | |
188 | #define __NR_pread 200 | |
189 | #define __NR_pwrite 201 | |
190 | #define __NR_chown 202 | |
191 | #define __NR_getcwd 203 | |
192 | #define __NR_capget 204 | |
193 | #define __NR_capset 205 | |
194 | #define __NR_sigaltstack 206 | |
195 | #define __NR_sendfile 207 | |
9a8fd558 CZ |
196 | #define __NR_mmap2 210 |
197 | #define __NR_truncate64 211 | |
198 | #define __NR_ftruncate64 212 | |
199 | #define __NR_stat64 213 | |
200 | #define __NR_lstat64 214 | |
201 | #define __NR_fstat64 215 | |
202 | #define __NR_pivot_root 216 | |
203 | #define __NR_mincore 217 | |
204 | #define __NR_madvise 218 | |
205 | #define __NR_getdents64 219 | |
9a8fd558 CZ |
206 | |
207 | /* Keep this last; should always equal the last valid call number. */ | |
208 | #define __NR_Linux_syscalls 220 | |
209 | ||
210 | /* user-visible error numbers are in the range -1 - -125: see | |
211 | * <asm-xtensa/errno.h> */ | |
212 | ||
213 | #define SYSXTENSA_RESERVED 0 /* don't use this */ | |
214 | #define SYSXTENSA_ATOMIC_SET 1 /* set variable */ | |
215 | #define SYSXTENSA_ATOMIC_EXG_ADD 2 /* exchange memory and add */ | |
216 | #define SYSXTENSA_ATOMIC_ADD 3 /* add to memory */ | |
217 | #define SYSXTENSA_ATOMIC_CMP_SWP 4 /* compare and swap */ | |
218 | ||
219 | #define SYSXTENSA_COUNT 5 /* count of syscall0 functions*/ | |
220 | ||
221 | #ifdef __KERNEL__ | |
56142536 | 222 | #include <linux/linkage.h> |
9a8fd558 | 223 | |
56142536 | 224 | #define __syscall_return(type, res) return ((type)(res)) |
9a8fd558 CZ |
225 | |
226 | /* Tensilica's xt-xcc compiler is much more agressive at code | |
227 | * optimization than gcc. Multiple __asm__ statements are | |
228 | * insufficient for xt-xcc because subsequent optimization passes | |
229 | * (beyond the front-end that knows of __asm__ statements and other | |
230 | * such GNU Extensions to C) can modify the register selection for | |
231 | * containment of C variables. | |
232 | * | |
233 | * xt-xcc cannot modify the contents of a single __asm__ statement, so | |
234 | * we create single-asm versions of the syscall macros that are | |
235 | * suitable and optimal for both xt-xcc and gcc. | |
236 | * | |
237 | * Linux takes system-call arguments in registers. The following | |
238 | * design is optimized for user-land apps (e.g., glibc) which | |
239 | * typically have a function wrapper around the "syscall" assembly | |
240 | * instruction. It satisfies the Xtensa ABI while minizing argument | |
241 | * shifting. | |
242 | * | |
243 | * The Xtensa ABI and software conventions require the system-call | |
244 | * number in a2. If an argument exists in a2, we move it to the next | |
245 | * available register. Note that for improved efficiency, we do NOT | |
246 | * shift all parameters down one register to maintain the original | |
247 | * order. | |
248 | * | |
249 | * At best case (zero arguments), we just write the syscall number to | |
250 | * a2. At worst case (1 to 6 arguments), we move the argument in a2 | |
251 | * to the next available register, then write the syscall number to | |
252 | * a2. | |
253 | * | |
254 | * For clarity, the following truth table enumerates all possibilities. | |
255 | * | |
256 | * arguments syscall number arg0, arg1, arg2, arg3, arg4, arg5 | |
257 | * --------- -------------- ---------------------------------- | |
258 | * 0 a2 | |
259 | * 1 a2 a3 | |
260 | * 2 a2 a4, a3 | |
261 | * 3 a2 a5, a3, a4 | |
262 | * 4 a2 a6, a3, a4, a5 | |
263 | * 5 a2 a7, a3, a4, a5, a6 | |
264 | * 6 a2 a8, a3, a4, a5, a6, a7 | |
265 | */ | |
266 | ||
267 | #define _syscall0(type,name) \ | |
268 | type name(void) \ | |
269 | { \ | |
270 | long __res; \ | |
271 | __asm__ __volatile__ ( \ | |
272 | " movi a2, %1 \n" \ | |
273 | " syscall \n" \ | |
274 | " mov %0, a2 \n" \ | |
275 | : "=a" (__res) \ | |
276 | : "i" (__NR_##name) \ | |
277 | : "a2" \ | |
278 | ); \ | |
279 | __syscall_return(type,__res); \ | |
280 | } | |
281 | ||
282 | #define _syscall1(type,name,type0,arg0) \ | |
283 | type name(type0 arg0) \ | |
284 | { \ | |
285 | long __res; \ | |
286 | __asm__ __volatile__ ( \ | |
287 | " mov a3, %2 \n" \ | |
288 | " movi a2, %1 \n" \ | |
289 | " syscall \n" \ | |
290 | " mov %0, a2 \n" \ | |
291 | : "=a" (__res) \ | |
292 | : "i" (__NR_##name), "a" (arg0) \ | |
293 | : "a2", "a3" \ | |
294 | ); \ | |
295 | __syscall_return(type,__res); \ | |
296 | } | |
297 | ||
298 | #define _syscall2(type,name,type0,arg0,type1,arg1) \ | |
299 | type name(type0 arg0,type1 arg1) \ | |
300 | { \ | |
301 | long __res; \ | |
302 | __asm__ __volatile__ ( \ | |
303 | " mov a4, %2 \n" \ | |
304 | " mov a3, %3 \n" \ | |
305 | " movi a2, %1 \n" \ | |
306 | " syscall \n" \ | |
307 | " mov %0, a2 \n" \ | |
308 | : "=a" (__res) \ | |
309 | : "i" (__NR_##name), "a" (arg0), "a" (arg1) \ | |
310 | : "a2", "a3", "a4" \ | |
311 | ); \ | |
312 | __syscall_return(type,__res); \ | |
313 | } | |
314 | ||
315 | #define _syscall3(type,name,type0,arg0,type1,arg1,type2,arg2) \ | |
316 | type name(type0 arg0,type1 arg1,type2 arg2) \ | |
317 | { \ | |
318 | long __res; \ | |
319 | __asm__ __volatile__ ( \ | |
320 | " mov a5, %2 \n" \ | |
321 | " mov a4, %4 \n" \ | |
322 | " mov a3, %3 \n" \ | |
323 | " movi a2, %1 \n" \ | |
324 | " syscall \n" \ | |
325 | " mov %0, a2 \n" \ | |
326 | : "=a" (__res) \ | |
327 | : "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2) \ | |
328 | : "a2", "a3", "a4", "a5" \ | |
329 | ); \ | |
330 | __syscall_return(type,__res); \ | |
331 | } | |
332 | ||
333 | #define _syscall4(type,name,type0,arg0,type1,arg1,type2,arg2,type3,arg3) \ | |
334 | type name(type0 arg0,type1 arg1,type2 arg2,type3 arg3) \ | |
335 | { \ | |
336 | long __res; \ | |
337 | __asm__ __volatile__ ( \ | |
338 | " mov a6, %2 \n" \ | |
339 | " mov a5, %5 \n" \ | |
340 | " mov a4, %4 \n" \ | |
341 | " mov a3, %3 \n" \ | |
342 | " movi a2, %1 \n" \ | |
343 | " syscall \n" \ | |
344 | " mov %0, a2 \n" \ | |
345 | : "=a" (__res) \ | |
346 | : "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2), "a" (arg3) \ | |
347 | : "a2", "a3", "a4", "a5", "a6" \ | |
348 | ); \ | |
349 | __syscall_return(type,__res); \ | |
350 | } | |
351 | ||
352 | /* Note that we save and restore the a7 frame pointer. | |
353 | * Including a7 in the clobber list doesn't do what you'd expect. | |
354 | */ | |
355 | #define _syscall5(type,name,type0,arg0,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \ | |
356 | type name(type0 arg0,type1 arg1,type2 arg2,type3 arg3,type4 arg4) \ | |
357 | { \ | |
358 | long __res; \ | |
359 | __asm__ __volatile__ ( \ | |
360 | " mov a9, a7 \n" \ | |
361 | " mov a7, %2 \n" \ | |
362 | " mov a6, %6 \n" \ | |
363 | " mov a5, %5 \n" \ | |
364 | " mov a4, %4 \n" \ | |
365 | " mov a3, %3 \n" \ | |
366 | " movi a2, %1 \n" \ | |
367 | " syscall \n" \ | |
368 | " mov a7, a9 \n" \ | |
369 | " mov %0, a2 \n" \ | |
370 | : "=a" (__res) \ | |
371 | : "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2), \ | |
372 | "a" (arg3), "a" (arg4) \ | |
373 | : "a2", "a3", "a4", "a5", "a6", "a9" \ | |
374 | ); \ | |
375 | __syscall_return(type,__res); \ | |
376 | } | |
377 | ||
378 | /* Note that we save and restore the a7 frame pointer. | |
379 | * Including a7 in the clobber list doesn't do what you'd expect. | |
380 | */ | |
381 | #define _syscall6(type,name,type0,arg0,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \ | |
382 | type name(type0 arg0,type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \ | |
383 | { \ | |
384 | long __res; \ | |
385 | __asm__ __volatile__ ( \ | |
386 | " mov a9, a7 \n" \ | |
387 | " mov a8, %2 \n" \ | |
388 | " mov a7, %7 \n" \ | |
389 | " mov a6, %6 \n" \ | |
390 | " mov a5, %5 \n" \ | |
391 | " mov a4, %4 \n" \ | |
392 | " mov a3, %3 \n" \ | |
393 | " movi a2, %1 \n" \ | |
394 | " syscall \n" \ | |
395 | " mov a7, a9 \n" \ | |
396 | " mov %0, a2 \n" \ | |
397 | : "=a" (__res) \ | |
398 | : "i" (__NR_##name), "a" (arg0), "a" (arg1), "a" (arg2), \ | |
399 | "a" (arg3), "a" (arg4), "a" (arg5) \ | |
400 | : "a2", "a3", "a4", "a5", "a6", "a8", "a9" \ | |
401 | ); \ | |
402 | __syscall_return(type,__res); \ | |
403 | } | |
404 | ||
9a8fd558 CZ |
405 | /* |
406 | * "Conditional" syscalls | |
407 | * | |
408 | * What we want is __attribute__((weak,alias("sys_ni_syscall"))), | |
409 | * but it doesn't work on all toolchains, so we just do it by hand | |
410 | */ | |
411 | #define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall"); | |
412 | ||
9a8fd558 | 413 | #define __ARCH_WANT_STAT64 |
9a8fd558 | 414 | #define __ARCH_WANT_SYS_UTIME |
9a8fd558 | 415 | #define __ARCH_WANT_SYS_LLSEEK |
9a8fd558 | 416 | #define __ARCH_WANT_SYS_RT_SIGACTION |
56142536 | 417 | #endif /* __KERNEL__ */ |
9a8fd558 | 418 | |
9a8fd558 | 419 | #endif /* _XTENSA_UNISTD_H */ |