Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Loading...
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
/*
 *  include/asm-s390/unistd.h
 *
 *  S390 version
 *
 *  Derived from "include/asm-i386/unistd.h"
 */

#ifndef _ASM_S390_UNISTD_H_
#define _ASM_S390_UNISTD_H_

/*
 * This file contains the system call numbers.
 */

#define __NR_exit                 1
#define __NR_fork                 2
#define __NR_read                 3
#define __NR_write                4
#define __NR_open                 5
#define __NR_close                6
#define __NR_creat                8
#define __NR_link                 9
#define __NR_unlink              10
#define __NR_execve              11
#define __NR_chdir               12
#define __NR_time                13
#define __NR_mknod               14
#define __NR_chmod               15
#define __NR_lchown              16
#define __NR_lseek               19
#define __NR_getpid              20
#define __NR_mount               21
#define __NR_umount              22
#define __NR_setuid              23
#define __NR_getuid              24
#define __NR_stime               25
#define __NR_ptrace              26
#define __NR_alarm               27
#define __NR_pause               29
#define __NR_utime               30
#define __NR_access              33
#define __NR_nice                34
#define __NR_sync                36
#define __NR_kill                37
#define __NR_rename              38
#define __NR_mkdir               39
#define __NR_rmdir               40
#define __NR_dup                 41
#define __NR_pipe                42
#define __NR_times               43
#define __NR_brk                 45
#define __NR_setgid              46
#define __NR_getgid              47
#define __NR_signal              48
#define __NR_geteuid             49
#define __NR_getegid             50
#define __NR_acct                51
#define __NR_umount2             52
#define __NR_ioctl               54
#define __NR_fcntl               55
#define __NR_setpgid             57
#define __NR_umask               60
#define __NR_chroot              61
#define __NR_ustat               62
#define __NR_dup2                63
#define __NR_getppid             64
#define __NR_getpgrp             65
#define __NR_setsid              66
#define __NR_sigaction           67
#define __NR_setreuid            70
#define __NR_setregid            71
#define __NR_sigsuspend          72
#define __NR_sigpending          73
#define __NR_sethostname         74
#define __NR_setrlimit           75
#define __NR_getrlimit           76
#define __NR_getrusage           77
#define __NR_gettimeofday        78
#define __NR_settimeofday        79
#define __NR_getgroups           80
#define __NR_setgroups           81
#define __NR_symlink             83
#define __NR_readlink            85
#define __NR_uselib              86
#define __NR_swapon              87
#define __NR_reboot              88
#define __NR_readdir             89
#define __NR_mmap                90
#define __NR_munmap              91
#define __NR_truncate            92
#define __NR_ftruncate           93
#define __NR_fchmod              94
#define __NR_fchown              95
#define __NR_getpriority         96
#define __NR_setpriority         97
#define __NR_statfs              99
#define __NR_fstatfs            100
#define __NR_ioperm             101
#define __NR_socketcall         102
#define __NR_syslog             103
#define __NR_setitimer          104
#define __NR_getitimer          105
#define __NR_stat               106
#define __NR_lstat              107
#define __NR_fstat              108
#define __NR_vhangup            111
#define __NR_idle               112
#define __NR_wait4              114
#define __NR_swapoff            115
#define __NR_sysinfo            116
#define __NR_ipc                117
#define __NR_fsync              118
#define __NR_sigreturn          119
#define __NR_clone              120
#define __NR_setdomainname      121
#define __NR_uname              122
#define __NR_adjtimex           124
#define __NR_mprotect           125
#define __NR_sigprocmask        126
#define __NR_create_module      127
#define __NR_init_module        128
#define __NR_delete_module      129
#define __NR_get_kernel_syms    130
#define __NR_quotactl           131
#define __NR_getpgid            132
#define __NR_fchdir             133
#define __NR_bdflush            134
#define __NR_sysfs              135
#define __NR_personality        136
#define __NR_afs_syscall        137 /* Syscall for Andrew File System */
#define __NR_setfsuid           138
#define __NR_setfsgid           139
#define __NR__llseek            140
#define __NR_getdents           141
#define __NR__newselect         142
#define __NR_flock              143
#define __NR_msync              144
#define __NR_readv              145
#define __NR_writev             146
#define __NR_getsid             147
#define __NR_fdatasync          148
#define __NR__sysctl            149
#define __NR_mlock              150
#define __NR_munlock            151
#define __NR_mlockall           152
#define __NR_munlockall         153
#define __NR_sched_setparam             154
#define __NR_sched_getparam             155
#define __NR_sched_setscheduler         156
#define __NR_sched_getscheduler         157
#define __NR_sched_yield                158
#define __NR_sched_get_priority_max     159
#define __NR_sched_get_priority_min     160
#define __NR_sched_rr_get_interval      161
#define __NR_nanosleep          162
#define __NR_mremap             163
#define __NR_setresuid          164
#define __NR_getresuid          165
#define __NR_query_module       167
#define __NR_poll               168
#define __NR_nfsservctl         169
#define __NR_setresgid          170
#define __NR_getresgid          171
#define __NR_prctl              172
#define __NR_rt_sigreturn       173
#define __NR_rt_sigaction       174
#define __NR_rt_sigprocmask     175
#define __NR_rt_sigpending      176
#define __NR_rt_sigtimedwait    177
#define __NR_rt_sigqueueinfo    178
#define __NR_rt_sigsuspend      179
#define __NR_pread64            180
#define __NR_pwrite64           181
#define __NR_chown              182
#define __NR_getcwd             183
#define __NR_capget             184
#define __NR_capset             185
#define __NR_sigaltstack        186
#define __NR_sendfile           187
#define __NR_getpmsg		188
#define __NR_putpmsg		189
#define __NR_vfork		190
#define __NR_ugetrlimit		191	/* SuS compliant getrlimit */
#define __NR_mmap2		192
#define __NR_truncate64		193
#define __NR_ftruncate64	194
#define __NR_stat64		195
#define __NR_lstat64		196
#define __NR_fstat64		197
#define __NR_lchown32		198
#define __NR_getuid32		199
#define __NR_getgid32		200
#define __NR_geteuid32		201
#define __NR_getegid32		202
#define __NR_setreuid32		203
#define __NR_setregid32		204
#define __NR_getgroups32	205
#define __NR_setgroups32	206
#define __NR_fchown32		207
#define __NR_setresuid32	208
#define __NR_getresuid32	209
#define __NR_setresgid32	210
#define __NR_getresgid32	211
#define __NR_chown32		212
#define __NR_setuid32		213
#define __NR_setgid32		214
#define __NR_setfsuid32		215
#define __NR_setfsgid32		216
#define __NR_pivot_root         217
#define __NR_mincore            218
#define __NR_madvise            219
#define __NR_getdents64		220
#define __NR_fcntl64		221
#define __NR_readahead		222
#define __NR_sendfile64		223
#define __NR_setxattr		224
#define __NR_lsetxattr		225
#define __NR_fsetxattr		226
#define __NR_getxattr		227
#define __NR_lgetxattr		228
#define __NR_fgetxattr		229
#define __NR_listxattr		230
#define __NR_llistxattr		231
#define __NR_flistxattr		232
#define __NR_removexattr	233
#define __NR_lremovexattr	234
#define __NR_fremovexattr	235
#define __NR_gettid		236
#define __NR_tkill		237
#define __NR_futex		238
#define __NR_sched_setaffinity	239
#define __NR_sched_getaffinity	240


/* user-visible error numbers are in the range -1 - -122: see <asm-s390/errno.h> */

#define __syscall_return(type, res)                          \
do {                                                         \
        if ((unsigned long)(res) >= (unsigned long)(-125)) { \
                errno = -(res);                              \
                res = -1;                                    \
        }                                                    \
        return (type) (res);                                 \
} while (0)

#define _svc_clobber "2", "cc", "memory"

#define _syscall0(type,name)                                 \
type name(void) {                                            \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name)                          \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall1(type,name,type1,arg1)                      \
type name(type1 arg1) {                                      \
        register type1 __arg1 asm("2") = arg1;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall2(type,name,type1,arg1,type2,arg2)           \
type name(type1 arg1, type2 arg2) {                          \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)\
type name(type1 arg1, type2 arg2, type3 arg3) {              \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        register type3 __arg3 asm("4") = arg3;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2),                              \
                  "d" (__arg3)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,\
                  type4,name4)                               \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {  \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        register type3 __arg3 asm("4") = arg3;               \
        register type4 __arg4 asm("5") = arg4;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2),                              \
                  "d" (__arg3),                              \
                  "d" (__arg4)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,\
                  type4,name4,type5,name5)                   \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4,    \
          type5 arg5) {                                      \
        register type1 __arg1 asm("2") = arg1;               \
        register type2 __arg2 asm("3") = arg2;               \
        register type3 __arg3 asm("4") = arg3;               \
        register type4 __arg4 asm("5") = arg4;               \
        register type5 __arg5 asm("6") = arg5;               \
        long __res;                                          \
        __asm__ __volatile__ (                               \
                "    svc %b1\n"                              \
                "    lr  %0,2"                               \
                : "=d" (__res)                               \
                : "i" (__NR_##name),                         \
                  "d" (__arg1),                              \
                  "d" (__arg2),                              \
                  "d" (__arg3),                              \
                  "d" (__arg4),                              \
                  "d" (__arg5)                               \
                : _svc_clobber );                            \
        __syscall_return(type,__res);                        \
}

#ifdef __KERNEL_SYSCALLS__

#include <asm/stat.h>

/*
 * we need this inline - forking from kernel space will result
 * in NO COPY ON WRITE (!!!), until an execve is executed. This
 * is no problem, but for the stack. This is handled by not letting
 * main() use the stack at all after fork(). Thus, no function
 * calls - which means inline code for fork too, as otherwise we
 * would use the stack upon exit from 'fork()'.
 *
 * Actually only pause and fork are needed inline, so that there
 * won't be any messing with the stack from main(), but we define
 * some others too.
 */
#define __NR__exit __NR_exit
static inline _syscall0(int,idle)
static inline _syscall0(int,pause)
static inline _syscall0(int,sync)
static inline _syscall0(pid_t,setsid)
static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
static inline _syscall3(int,read,int,fd,char *,buf,off_t,count)
static inline _syscall3(off_t,lseek,int,fd,off_t,offset,int,count)
static inline _syscall1(int,dup,int,fd)
static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
static inline _syscall1(int,close,int,fd)
static inline _syscall1(int,_exit,int,exitcode)
static inline _syscall1(int,delete_module,const char *,name)
static inline _syscall2(long,stat,char *,filename,struct stat *,statbuf)

struct rusage;
extern long sys_wait4(pid_t, unsigned int *, int, struct rusage *);
static inline pid_t waitpid(int pid, int *wait_stat, int flags)
{
	return sys_wait4(pid, wait_stat, flags, NULL);
}

static inline pid_t wait(int * wait_stat)
{
        return waitpid(-1,wait_stat,0);
}

#endif

/*
 * "Conditional" syscalls
 *
 * What we want is __attribute__((weak,alias("sys_ni_syscall"))),
 * but it doesn't work on all toolchains, so we just do it by hand
 */
#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall");

#endif /* _ASM_S390_UNISTD_H_ */