root/include/asm-sparc/unistd.h

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INCLUDED FROM


DEFINITIONS

This source file includes following definitions.
  1. _syscall0
  2. kernel_thread

   1 /* $Id: unistd.h,v 1.20 1996/04/20 07:54:39 davem Exp $ */
   2 #ifndef _SPARC_UNISTD_H
   3 #define _SPARC_UNISTD_H
   4 
   5 /*
   6  * System calls under the Sparc.
   7  *
   8  * Don't be scared by the ugly clobbers, it is the only way I can
   9  * think of right now to force the arguments into fixed registers
  10  * before the trap into the system call with gcc 'asm' statements.
  11  *
  12  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
  13  *
  14  * SunOS compatibility based upon preliminary work which is:
  15  *
  16  * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
  17  */
  18 
  19 #define __NR_setup                0 /* Used only by init, to get system going.     */
  20 #define __NR_exit                 1 /* Common                                      */
  21 #define __NR_fork                 2 /* Common                                      */
  22 #define __NR_read                 3 /* Common                                      */
  23 #define __NR_write                4 /* Common                                      */
  24 #define __NR_open                 5 /* Common                                      */
  25 #define __NR_close                6 /* Common                                      */
  26 #define __NR_wait4                7 /* Common                                      */
  27 #define __NR_creat                8 /* Common                                      */
  28 #define __NR_link                 9 /* Common                                      */
  29 #define __NR_unlink              10 /* Common                                      */
  30 #define __NR_execv               11 /* SunOS Specific                              */
  31 #define __NR_chdir               12 /* Common                                      */
  32 /* #define __NR_ni_syscall       13    ENOSYS under SunOS                          */
  33 #define __NR_mknod               14 /* Common                                      */
  34 #define __NR_chmod               15 /* Common                                      */
  35 #define __NR_chown               16 /* Common                                      */
  36 #define __NR_brk                 17 /* Common                                      */
  37 /* #define __NR_ni_syscall       18    ENOSYS under SunOS                          */
  38 #define __NR_lseek               19 /* Common                                      */
  39 #define __NR_getpid              20 /* Common                                      */
  40 /* #define __NR_ni_syscall       21    ENOSYS under SunOS                          */
  41 /* #define __NR_ni_syscall       22    ENOSYS under SunOS                          */
  42 #define __NR_setuid              23 /* Implemented via setreuid in SunOS           */
  43 #define __NR_getuid              24 /* Common                                      */
  44 /* #define __NR_ni_syscall       25    ENOSYS under SunOS                          */
  45 #define __NR_ptrace              26 /* Common                                      */
  46 #define __NR_alarm               27 /* Implemented via setitimer in SunOS          */
  47 /* #define __NR_ni_syscall       28    ENOSYS under SunOS                          */
  48 #define __NR_pause               29 /* Is sigblock(0)->sigpause() in SunOS         */
  49 #define __NR_utime               30 /* Implemented via utimes() under SunOS        */
  50 #define __NR_stty                31 /* Implemented via ioctl() under SunOS         */
  51 #define __NR_gtty                32 /* Implemented via ioctl() under SunOS         */
  52 #define __NR_access              33 /* Common                                      */
  53 #define __NR_nice                34 /* Implemented via get/setpriority() in SunOS  */
  54 #define __NR_ftime               35 /* Implemented via gettimeofday() in SunOS     */
  55 #define __NR_sync                36 /* Common                                      */
  56 #define __NR_kill                37 /* Common                                      */
  57 #define __NR_stat                38 /* Common                                      */
  58 /* #define __NR_ni_syscall       39    ENOSYS under SunOS                          */
  59 #define __NR_lstat               40 /* Common                                      */
  60 #define __NR_dup                 41 /* Common                                      */
  61 #define __NR_pipe                42 /* Common                                      */
  62 #define __NR_times               43 /* Implemented via getrusage() in SunOS        */
  63 #define __NR_profil              44 /* Common                                      */
  64 /* #define __NR_ni_syscall       45    ENOSYS under SunOS                          */
  65 #define __NR_setgid              46 /* Implemented via setregid() in SunOS         */
  66 #define __NR_getgid              47 /* Common                                      */
  67 #define __NR_signal              48 /* Implemented via sigvec() in SunOS           */
  68 #define __NR_geteuid             49 /* SunOS calls getuid()                        */
  69 #define __NR_getegid             50 /* SunOS calls getgid()                        */
  70 #define __NR_acct                51 /* Common                                      */
  71 /* #define __NR_ni_syscall       52    ENOSYS under SunOS                          */
  72 #define __NR_mctl                53 /* SunOS specific                              */
  73 #define __NR_ioctl               54 /* Common                                      */
  74 #define __NR_reboot              55 /* Common                                      */
  75 /* #define __NR_ni_syscall       56    ENOSYS under SunOS                          */
  76 #define __NR_symlink             57 /* Common                                      */
  77 #define __NR_readlink            58 /* Common                                      */
  78 #define __NR_execve              59 /* Common                                      */
  79 #define __NR_umask               60 /* Common                                      */
  80 #define __NR_chroot              61 /* Common                                      */
  81 #define __NR_fstat               62 /* Common                                      */
  82 /* #define __NR_ni_syscall       63    ENOSYS under SunOS                          */
  83 #define __NR_getpagesize         64 /* Common                                      */
  84 #define __NR_msync               65 /* Common in newer 1.3.x revs...               */
  85 /* #define __NR_ni_syscall       66    ENOSYS under SunOS                          */
  86 /* #define __NR_ni_syscall       67    ENOSYS under SunOS                          */
  87 /* #define __NR_ni_syscall       68    ENOSYS under SunOS                          */
  88 #define __NR_sbrk                69 /* SunOS Specific                              */
  89 #define __NR_sstk                70 /* SunOS Specific                              */
  90 #define __NR_mmap                71 /* Common                                      */
  91 #define __NR_vadvise             72 /* SunOS Specific                              */
  92 #define __NR_munmap              73 /* Common                                      */
  93 #define __NR_mprotect            74 /* Common                                      */
  94 #define __NR_madvise             75 /* SunOS Specific                              */
  95 #define __NR_vhangup             76 /* Common                                      */
  96 /* #define __NR_ni_syscall       77    ENOSYS under SunOS                          */
  97 #define __NR_mincore             78 /* SunOS Specific                              */
  98 #define __NR_getgroups           79 /* Common                                      */
  99 #define __NR_setgroups           80 /* Common                                      */
 100 #define __NR_getpgrp             81 /* Common                                      */
 101 #define __NR_setpgrp             82 /* setpgid, same difference...                 */
 102 #define __NR_setitimer           83 /* Common                                      */
 103 /* #define __NR_ni_syscall       84    ENOSYS under SunOS                          */
 104 #define __NR_swapon              85 /* Common                                      */
 105 #define __NR_getitimer           86 /* Common                                      */
 106 #define __NR_gethostname         87 /* SunOS Specific                              */
 107 #define __NR_sethostname         88 /* Common                                      */
 108 #define __NR_getdtablesize       89 /* SunOS Specific                              */
 109 #define __NR_dup2                90 /* Common                                      */
 110 #define __NR_getdopt             91 /* SunOS Specific                              */
 111 #define __NR_fcntl               92 /* Common                                      */
 112 #define __NR_select              93 /* Common                                      */
 113 #define __NR_setdopt             94 /* SunOS Specific                              */
 114 #define __NR_fsync               95 /* Common                                      */
 115 #define __NR_setpriority         96 /* Common                                      */
 116 #define __NR_socket              97 /* SunOS Specific                              */
 117 #define __NR_connect             98 /* SunOS Specific                              */
 118 #define __NR_accept              99 /* SunOS Specific                              */
 119 #define __NR_getpriority        100 /* Common                                      */
 120 #define __NR_send               101 /* SunOS Specific                              */
 121 #define __NR_recv               102 /* SunOS Specific                              */
 122 /* #define __NR_ni_syscall      103    ENOSYS under SunOS                          */
 123 #define __NR_bind               104 /* SunOS Specific                              */
 124 #define __NR_setsockopt         105 /* SunOS Specific                              */
 125 #define __NR_listen             106 /* SunOS Specific                              */
 126 /* #define __NR_ni_syscall      107    ENOSYS under SunOS                          */
 127 #define __NR_sigvec             108 /* SunOS Specific                              */
 128 #define __NR_sigblock           109 /* SunOS Specific                              */
 129 #define __NR_sigsetmask         110 /* SunOS Specific                              */
 130 #define __NR_sigpause           111 /* SunOS Specific                              */
 131 #define __NR_sigstack           112 /* SunOS Specific                              */
 132 #define __NR_recvmsg            113 /* SunOS Specific                              */
 133 #define __NR_sendmsg            114 /* SunOS Specific                              */
 134 #define __NR_vtrace             115 /* SunOS Specific                              */
 135 #define __NR_gettimeofday       116 /* Common                                      */
 136 #define __NR_getrusage          117 /* Common                                      */
 137 #define __NR_getsockopt         118 /* SunOS Specific                              */
 138 /* #define __NR_ni_syscall      119    ENOSYS under SunOS                          */
 139 #define __NR_readv              120 /* Common                                      */
 140 #define __NR_writev             121 /* Common                                      */
 141 #define __NR_settimeofday       122 /* Common                                      */
 142 #define __NR_fchown             123 /* Common                                      */
 143 #define __NR_fchmod             124 /* Common                                      */
 144 #define __NR_recvfrom           125 /* SunOS Specific                              */
 145 #define __NR_setreuid           126 /* Common                                      */
 146 #define __NR_setregid           127 /* Common                                      */
 147 #define __NR_rename             128 /* Common                                      */
 148 #define __NR_truncate           129 /* Common                                      */
 149 #define __NR_ftruncate          130 /* Common                                      */
 150 #define __NR_flock              131 /* Common                                      */
 151 /* #define __NR_ni_syscall      132    ENOSYS under SunOS                          */
 152 #define __NR_sendto             133 /* SunOS Specific                              */
 153 #define __NR_shutdown           134 /* SunOS Specific                              */
 154 #define __NR_socketpair         135 /* SunOS Specific                              */
 155 #define __NR_mkdir              136 /* Common                                      */
 156 #define __NR_rmdir              137 /* Common                                      */
 157 #define __NR_utimes             138 /* SunOS Specific                              */
 158 /* #define __NR_ni_syscall      139    ENOSYS under SunOS                          */
 159 #define __NR_adjtime            140 /* SunOS Specific                              */
 160 #define __NR_getpeername        141 /* SunOS Specific                              */
 161 #define __NR_gethostid          142 /* SunOS Specific                              */
 162 /* #define __NR_ni_syscall      143    ENOSYS under SunOS                          */
 163 #define __NR_getrlimit          144 /* Common                                      */
 164 #define __NR_setrlimit          145 /* Common                                      */
 165 #define __NR_killpg             146 /* SunOS Specific                              */
 166 /* #define __NR_ni_syscall      147    ENOSYS under SunOS                          */
 167 /* #define __NR_ni_syscall      148    ENOSYS under SunOS                          */
 168 /* #define __NR_ni_syscall      149    ENOSYS under SunOS                          */
 169 #define __NR_getsockname        150 /* SunOS Specific                              */
 170 #define __NR_getmsg             151 /* SunOS Specific                              */
 171 #define __NR_putmsg             152 /* SunOS Specific                              */
 172 #define __NR_poll               153 /* SunOS Specific                              */
 173 /* #define __NR_ni_syscall      154    ENOSYS under SunOS                          */
 174 #define __NR_nfssvc             155 /* SunOS Specific                              */
 175 #define __NR_getdirentries      156 /* SunOS Specific                              */
 176 #define __NR_statfs             157 /* Common                                      */
 177 #define __NR_fstatfs            158 /* Common                                      */
 178 #define __NR_umount             159 /* Common                                      */
 179 #define __NR_async_daemon       160 /* SunOS Specific                              */
 180 #define __NR_getfh              161 /* SunOS Specific                              */
 181 #define __NR_getdomainname      162 /* SunOS Specific                              */
 182 #define __NR_setdomainname      163 /* Common                                      */
 183 /* #define __NR_ni_syscall      164    ENOSYS under SunOS                          */
 184 #define __NR_quotactl           165 /* Common                                      */
 185 #define __NR_exportfs           166 /* SunOS Specific                              */
 186 #define __NR_mount              167 /* Common                                      */
 187 #define __NR_ustat              168 /* Common                                      */
 188 #define __NR_semsys             169 /* SunOS Specific                              */
 189 #define __NR_msgsys             170 /* SunOS Specific                              */
 190 #define __NR_shmsys             171 /* SunOS Specific                              */
 191 #define __NR_auditsys           172 /* SunOS Specific                              */
 192 #define __NR_rfssys             173 /* SunOS Specific                              */
 193 #define __NR_getdents           174 /* Common                                      */
 194 #define __NR_setsid             175 /* Common                                      */
 195 #define __NR_fchdir             176 /* Common                                      */
 196 #define __NR_fchroot            177 /* SunOS Specific                              */
 197 #define __NR_vpixsys            178 /* SunOS Specific                              */
 198 #define __NR_aioread            179 /* SunOS Specific                              */
 199 #define __NR_aiowrite           180 /* SunOS Specific                              */
 200 #define __NR_aiowait            181 /* SunOS Specific                              */
 201 #define __NR_aiocancel          182 /* SunOS Specific                              */
 202 #define __NR_sigpending         183 /* Common                                      */
 203 /* #define __NR_ni_syscall      184    ENOSYS under SunOS                          */
 204 #define __NR_setpgid            185 /* Common                                      */
 205 #define __NR_pathconf           186 /* SunOS Specific                              */
 206 #define __NR_fpathconf          187 /* SunOS Specific                              */
 207 #define __NR_sysconf            188 /* SunOS Specific                              */
 208 #define __NR_uname              189 /* Linux Specific                              */
 209 #define __NR_init_module        190 /* Linux Specific                              */
 210 #define __NR_personality        191 /* Linux Specific                              */
 211 #define __NR_prof               192 /* Linux Specific                              */
 212 #define __NR_break              193 /* Linux Specific                              */
 213 #define __NR_lock               194 /* Linux Specific                              */
 214 #define __NR_mpx                195 /* Linux Specific                              */
 215 #define __NR_ulimit             196 /* Linux Specific                              */
 216 #define __NR_getppid            197 /* Linux Specific                              */
 217 #define __NR_sigaction          198 /* Linux Specific                              */
 218 #define __NR_sgetmask           199 /* Linux Specific                              */
 219 #define __NR_ssetmask           200 /* Linux Specific                              */
 220 #define __NR_sigsuspend         201 /* Linux Specific                              */
 221 #define __NR_oldlstat           202 /* Linux Specific                              */
 222 #define __NR_uselib             203 /* Linux Specific                              */
 223 #define __NR_readdir            204 /* Linux Specific                              */
 224 #define __NR_ioperm             205 /* Linux Specific - i386 specific, unused      */
 225 #define __NR_socketcall         206 /* Linux Specific                              */
 226 #define __NR_syslog             207 /* Linux Specific                              */
 227 #define __NR_olduname           208 /* Linux Specific                              */
 228 #define __NR_iopl               209 /* Linux Specific - i386 specific, unused      */
 229 #define __NR_idle               210 /* Linux Specific                              */
 230 #define __NR_vm86               211 /* Linux Specific - i386 specific, unused      */
 231 #define __NR_waitpid            212 /* Linux Specific                              */
 232 #define __NR_swapoff            213 /* Linux Specific                              */
 233 #define __NR_sysinfo            214 /* Linux Specific                              */
 234 #define __NR_ipc                215 /* Linux Specific                              */
 235 #define __NR_sigreturn          216 /* Linux Specific                              */
 236 #define __NR_clone              217 /* Linux Specific                              */
 237 #define __NR_modify_ldt         218 /* Linux Specific - i386 specific, unused      */
 238 #define __NR_adjtimex           219 /* Linux Specific                              */
 239 #define __NR_sigprocmask        220 /* Linux Specific                              */
 240 #define __NR_create_module      221 /* Linux Specific                              */
 241 #define __NR_delete_module      222 /* Linux Specific                              */
 242 #define __NR_get_kernel_syms    223 /* Linux Specific                              */
 243 #define __NR_getpgid            224 /* Linux Specific                              */
 244 #define __NR_bdflush            225 /* Linux Specific                              */
 245 #define __NR_sysfs              226 /* Linux Specific                              */
 246 #define __NR_afs_syscall        227 /* Linux Specific                              */
 247 #define __NR_setfsuid           228 /* Linux Specific                              */
 248 #define __NR_setfsgid           229 /* Linux Specific                              */
 249 #define __NR__newselect         230 /* Linux Specific                              */
 250 #define __NR_time               231 /* Linux Specific                              */
 251 #define __NR_oldstat            232 /* Linux Specific                              */
 252 #define __NR_stime              233 /* Linux Specific                              */
 253 #define __NR_oldfstat           234 /* Linux Specific                              */
 254 #define __NR_phys               235 /* Linux Specific                              */
 255 #define __NR__llseek            236 /* Linux Specific                              */
 256 #define __NR_mlock              237
 257 #define __NR_munlock            238
 258 #define __NR_mlockall           239
 259 #define __NR_munlockall         240
 260 #define __NR_sched_setparam     241
 261 #define __NR_sched_getparam     242
 262 #define __NR_sched_setscheduler 243
 263 #define __NR_sched_getscheduler 244
 264 #define __NR_sched_yield        245
 265 #define __NR_sched_get_priority_max 246
 266 #define __NR_sched_get_priority_min 247
 267 #define __NR_sched_rr_get_interval  248
 268 #define __NR_nanosleep          249
 269 #define __NR_mremap             250
 270 #define __NR__sysctl            251
 271 #define __NR_getsid             252
 272 #define __NR_fdatasync          253
 273 
 274 #define _syscall0(type,name) \
 275 type name(void) \
 276 { \
 277 long __res; \
 278 __asm__ volatile ("or %%g0, %0, %%g1\n\t" \
 279                   "t 0x10\n\t" \
 280                   "bcc 1f\n\t" \
 281                   "or %%g0, %%o0, %0\n\t" \
 282                   "sub %%g0, %%o0, %0\n\t" \
 283                   "1:\n\t" \
 284                   : "=r" (__res)\
 285                   : "0" (__NR_##name) \
 286                   : "g1", "o0"); \
 287 if (__res >= 0) \
 288     return (type) __res; \
 289 errno = -__res; \
 290 return -1; \
 291 }
 292 
 293 #define _syscall1(type,name,type1,arg1) \
 294 type name(type1 arg1) \
 295 { \
 296 long __res; \
 297 __asm__ volatile ("or %%g0, %0, %%g1\n\t" \
 298                   "or %%g0, %1, %%o0\n\t" \
 299                   "t 0x10\n\t" \
 300                   "bcc 1f\n\t" \
 301                   "or %%g0, %%o0, %0\n\t" \
 302                   "sub %%g0, %%o0, %0\n\t" \
 303                   "1:\n\t" \
 304                   : "=r" (__res), "=r" ((long)(arg1)) \
 305                   : "0" (__NR_##name),"1" ((long)(arg1)) \
 306                   : "g1", "o0"); \
 307 if (__res >= 0) \
 308         return (type) __res; \
 309 errno = -__res; \
 310 return -1; \
 311 }
 312 
 313 #define _syscall2(type,name,type1,arg1,type2,arg2) \
 314 type name(type1 arg1,type2 arg2) \
 315 { \
 316 long __res; \
 317 __asm__ volatile ("or %%g0, %0, %%g1\n\t" \
 318                   "or %%g0, %1, %%o0\n\t" \
 319                   "or %%g0, %2, %%o1\n\t" \
 320                   "t 0x10\n\t" \
 321                   "bcc 1f\n\t" \
 322                   "or %%g0, %%o0, %0\n\t" \
 323                   "sub %%g0,%%o0,%0\n\t" \
 324                   "1:\n\t" \
 325                   : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)) \
 326                   : "0" (__NR_##name),"1" ((long)(arg1)),"2" ((long)(arg2)) \
 327                   : "g1", "o0", "o1"); \
 328 if (__res >= 0) \
 329         return (type) __res; \
 330 errno = -__res; \
 331 return -1; \
 332 }
 333 
 334 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
 335 type name(type1 arg1,type2 arg2,type3 arg3) \
 336 { \
 337 long __res; \
 338 __asm__ volatile ("or %%g0, %0, %%g1\n\t" \
 339                   "or %%g0, %1, %%o0\n\t" \
 340                   "or %%g0, %2, %%o1\n\t" \
 341                   "or %%g0, %3, %%o2\n\t" \
 342                   "t 0x10\n\t" \
 343                   "bcc 1f\n\t" \
 344                   "or %%g0, %%o0, %0\n\t" \
 345                   "sub %%g0, %%o0, %0\n\t" \
 346                   "1:\n\t" \
 347                   : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)), \
 348                     "=r" ((long)(arg3)) \
 349                   : "0" (__NR_##name), "1" ((long)(arg1)), "2" ((long)(arg2)), \
 350                     "3" ((long)(arg3)) \
 351                   : "g1", "o0", "o1", "o2"); \
 352 if (__res>=0) \
 353         return (type) __res; \
 354 errno = -__res; \
 355 return -1; \
 356 }
 357 
 358 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
 359 type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
 360 { \
 361 long __res; \
 362 __asm__ volatile ("or %%g0, %0, %%g1\n\t" \
 363                   "or %%g0, %1, %%o0\n\t" \
 364                   "or %%g0, %2, %%o1\n\t" \
 365                   "or %%g0, %3, %%o2\n\t" \
 366                   "or %%g0, %4, %%o3\n\t" \
 367                   "t 0x10\n\t" \
 368                   "bcc 1f\n\t" \
 369                   "or %%g0, %%o0, %0\n\t" \
 370                   "sub %%g0,%%o0, %0\n\t" \
 371                   "1:\n\t" \
 372                   : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)), \
 373                     "=r" ((long)(arg3)), "=r" ((long)(arg4)) \
 374                   : "0" (__NR_##name),"1" ((long)(arg1)),"2" ((long)(arg2)), \
 375                     "3" ((long)(arg3)),"4" ((long)(arg4)) \
 376                   : "g1", "o0", "o1", "o2", "o3"); \
 377 if (__res>=0) \
 378         return (type) __res; \
 379 errno = -__res; \
 380 return -1; \
 381 } 
 382 #
 383 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
 384           type5,arg5) \
 385 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
 386 { \
 387       long __res; \
 388 \
 389 __asm__ volatile ("or %%g0, %1, %%o0\n\t" \
 390                   "or %%g0, %2, %%o1\n\t" \
 391                   "or %%g0, %3, %%o2\n\t" \
 392                   "or %%g0, %4, %%o3\n\t" \
 393                   "or %%g0, %5, %%o4\n\t" \
 394                   "or %%g0, %6, %%g1\n\t" \
 395                   "t 0x10\n\t" \
 396                   "bcc 1f\n\t" \
 397                   "or %%g0, %%o0, %0\n\t" \
 398                   "sub %%g0, %%o0, %0\n\t" \
 399                   "1:\n\t" \
 400                   : "=r" (__res) \
 401                   : "0" ((long)(arg1)),"1" ((long)(arg2)), \
 402                     "2" ((long)(arg3)),"3" ((long)(arg4)),"4" ((long)(arg5)), \
 403                     "i" (__NR_##name)  \
 404                   : "g1", "o0", "o1", "o2", "o3", "o4"); \
 405 if (__res>=0) \
 406         return (type) __res; \
 407 errno = -__res; \
 408 return -1; \
 409 }
 410 #ifdef __KERNEL_SYSCALLS__
 411 
 412 /*
 413  * we need this inline - forking from kernel space will result
 414  * in NO COPY ON WRITE (!!!), until an execve is executed. This
 415  * is no problem, but for the stack. This is handled by not letting
 416  * main() use the stack at all after fork(). Thus, no function
 417  * calls - which means inline code for fork too, as otherwise we
 418  * would use the stack upon exit from 'fork()'.
 419  *
 420  * Actually only pause and fork are needed inline, so that there
 421  * won't be any messing with the stack from main(), but we define
 422  * some others too.
 423  */
 424 #define __NR__exit __NR_exit
 425 static inline _syscall0(int,idle)
     /* [previous][next][first][last][top][bottom][index][help] */
 426 static inline _syscall0(int,fork)
 427 static inline _syscall2(int,clone,unsigned long,flags,char *,ksp)
 428 static inline _syscall0(int,pause)
 429 static inline _syscall0(int,setup)
 430 static inline _syscall0(int,sync)
 431 static inline _syscall0(pid_t,setsid)
 432 static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
 433 static inline _syscall1(int,dup,int,fd)
 434 static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
 435 static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
 436 static inline _syscall1(int,close,int,fd)
 437 static inline _syscall1(int,_exit,int,exitcode)
 438 static inline _syscall3(pid_t,waitpid,pid_t,pid,int *,wait_stat,int,options)
 439 
 440 static inline pid_t wait(int * wait_stat)
 441 {
 442         return waitpid(-1,wait_stat,0);
 443 }
 444 
 445 /*
 446  * This is the mechanism for creating a new kernel thread.
 447  *
 448  * NOTE! Only a kernel-only process(ie the swapper or direct descendants
 449  * who haven't done an "execve()") should use this: it will work within
 450  * a system call from a "real" process, but the process memory space will
 451  * not be free'd until both the parent and the child have exited.
 452  */
 453 static inline pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
     /* [previous][next][first][last][top][bottom][index][help] */
 454 {
 455         long retval;
 456 
 457         __asm__ __volatile("mov %4, %%g2\n\t"    /* Set aside fn ptr... */
 458                            "mov %5, %%g3\n\t"    /* and arg. */
 459                            "mov %1, %%g1\n\t"
 460                            "mov %2, %%o0\n\t"    /* Clone flags. */
 461                            "mov 0, %%o1\n\t"     /* usp arg == 0 */
 462                            "t 0x10\n\t"          /* Linux/Sparc clone(). */
 463                            "cmp %%o1, 0\n\t"
 464                            "be 1f\n\t"           /* The parent, just return. */
 465                            " nop\n\t"            /* Delay slot. */
 466                            "jmpl %%g2, %%o7\n\t" /* Call the function. */
 467                            " mov %%g3, %%o0\n\t" /* Get back the arg in delay. */
 468                            "mov %3, %%g1\n\t"
 469                            "t 0x10\n\t"          /* Linux/Sparc exit(). */
 470                            /* Notreached by child. */
 471                            "1: mov %%o0, %0\n\t" :
 472                            "=r" (retval) :
 473                            "i" (__NR_clone), "r" (flags | CLONE_VM),
 474                            "i" (__NR_exit),  "r" (fn), "r" (arg) :
 475                            "g1", "g2", "g3", "o0", "o1", "memory");
 476         return retval;
 477 }
 478 
 479 #endif /* __KERNEL_SYSCALLS__ */
 480 
 481 /* sysconf options, for SunOS compatibility */
 482 #define   _SC_ARG_MAX             1
 483 #define   _SC_CHILD_MAX           2
 484 #define   _SC_CLK_TCK             3
 485 #define   _SC_NGROUPS_MAX         4
 486 #define   _SC_OPEN_MAX            5
 487 #define   _SC_JOB_CONTROL         6
 488 #define   _SC_SAVED_IDS           7
 489 #define   _SC_VERSION             8
 490 
 491 #endif /* _SPARC_UNISTD_H */

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