include/asm-i386/unistd.h

/* */
This source file includes following definitions.
_syscall0
kernel_thread
   1 #ifndef _ASM_I386_UNISTD_H_
   2 #define _ASM_I386_UNISTD_H_
   3 
   4 /*
   5  * This file contains the system call numbers.
   6  */
   7 
   8 #define __NR_setup                0     /* used only by init, to get system going */
   9 #define __NR_exit                 1
  10 #define __NR_fork                 2
  11 #define __NR_read                 3
  12 #define __NR_write                4
  13 #define __NR_open                 5
  14 #define __NR_close                6
  15 #define __NR_waitpid              7
  16 #define __NR_creat                8
  17 #define __NR_link                 9
  18 #define __NR_unlink              10
  19 #define __NR_execve              11
  20 #define __NR_chdir               12
  21 #define __NR_time                13
  22 #define __NR_mknod               14
  23 #define __NR_chmod               15
  24 #define __NR_chown               16
  25 #define __NR_break               17
  26 #define __NR_oldstat             18
  27 #define __NR_lseek               19
  28 #define __NR_getpid              20
  29 #define __NR_mount               21
  30 #define __NR_umount              22
  31 #define __NR_setuid              23
  32 #define __NR_getuid              24
  33 #define __NR_stime               25
  34 #define __NR_ptrace              26
  35 #define __NR_alarm               27
  36 #define __NR_oldfstat            28
  37 #define __NR_pause               29
  38 #define __NR_utime               30
  39 #define __NR_stty                31
  40 #define __NR_gtty                32
  41 #define __NR_access              33
  42 #define __NR_nice                34
  43 #define __NR_ftime               35
  44 #define __NR_sync                36
  45 #define __NR_kill                37
  46 #define __NR_rename              38
  47 #define __NR_mkdir               39
  48 #define __NR_rmdir               40
  49 #define __NR_dup                 41
  50 #define __NR_pipe                42
  51 #define __NR_times               43
  52 #define __NR_prof                44
  53 #define __NR_brk                 45
  54 #define __NR_setgid              46
  55 #define __NR_getgid              47
  56 #define __NR_signal              48
  57 #define __NR_geteuid             49
  58 #define __NR_getegid             50
  59 #define __NR_acct                51
  60 #define __NR_phys                52
  61 #define __NR_lock                53
  62 #define __NR_ioctl               54
  63 #define __NR_fcntl               55
  64 #define __NR_mpx                 56
  65 #define __NR_setpgid             57
  66 #define __NR_ulimit              58
  67 #define __NR_oldolduname         59
  68 #define __NR_umask               60
  69 #define __NR_chroot              61
  70 #define __NR_ustat               62
  71 #define __NR_dup2                63
  72 #define __NR_getppid             64
  73 #define __NR_getpgrp             65
  74 #define __NR_setsid              66
  75 #define __NR_sigaction           67
  76 #define __NR_sgetmask            68
  77 #define __NR_ssetmask            69
  78 #define __NR_setreuid            70
  79 #define __NR_setregid            71
  80 #define __NR_sigsuspend          72
  81 #define __NR_sigpending          73
  82 #define __NR_sethostname         74
  83 #define __NR_setrlimit           75
  84 #define __NR_getrlimit           76
  85 #define __NR_getrusage           77
  86 #define __NR_gettimeofday        78
  87 #define __NR_settimeofday        79
  88 #define __NR_getgroups           80
  89 #define __NR_setgroups           81
  90 #define __NR_select              82
  91 #define __NR_symlink             83
  92 #define __NR_oldlstat            84
  93 #define __NR_readlink            85
  94 #define __NR_uselib              86
  95 #define __NR_swapon              87
  96 #define __NR_reboot              88
  97 #define __NR_readdir             89
  98 #define __NR_mmap                90
  99 #define __NR_munmap              91
 100 #define __NR_truncate            92
 101 #define __NR_ftruncate           93
 102 #define __NR_fchmod              94
 103 #define __NR_fchown              95
 104 #define __NR_getpriority         96
 105 #define __NR_setpriority         97
 106 #define __NR_profil              98
 107 #define __NR_statfs              99
 108 #define __NR_fstatfs            100
 109 #define __NR_ioperm             101
 110 #define __NR_socketcall         102
 111 #define __NR_syslog             103
 112 #define __NR_setitimer          104
 113 #define __NR_getitimer          105
 114 #define __NR_stat               106
 115 #define __NR_lstat              107
 116 #define __NR_fstat              108
 117 #define __NR_olduname           109
 118 #define __NR_iopl               110
 119 #define __NR_vhangup            111
 120 #define __NR_idle               112
 121 #define __NR_vm86               113
 122 #define __NR_wait4              114
 123 #define __NR_swapoff            115
 124 #define __NR_sysinfo            116
 125 #define __NR_ipc                117
 126 #define __NR_fsync              118
 127 #define __NR_sigreturn          119
 128 #define __NR_clone              120
 129 #define __NR_setdomainname      121
 130 #define __NR_uname              122
 131 #define __NR_modify_ldt         123
 132 #define __NR_adjtimex           124
 133 #define __NR_mprotect           125
 134 #define __NR_sigprocmask        126
 135 #define __NR_create_module      127
 136 #define __NR_init_module        128
 137 #define __NR_delete_module      129
 138 #define __NR_get_kernel_syms    130
 139 #define __NR_quotactl           131
 140 #define __NR_getpgid            132
 141 #define __NR_fchdir             133
 142 #define __NR_bdflush            134
 143 #define __NR_sysfs              135
 144 #define __NR_personality        136
 145 #define __NR_afs_syscall        137 /* Syscall for Andrew File System */
 146 #define __NR_setfsuid           138
 147 #define __NR_setfsgid           139
 148 #define __NR__llseek            140
 149 #define __NR_getdents           141
 150 #define __NR__newselect         142
 151 #define __NR_flock              143
 152 #define __NR_msync              144
 153 #define __NR_readv              145
 154 #define __NR_writev             146
 155 #define __NR_getsid             147
 156 #define __NR_fdatasync          148
 157 #define __NR__sysctl            149
 158 #define __NR_mlock              150
 159 #define __NR_munlock            151
 160 #define __NR_mlockall           152
 161 #define __NR_munlockall         153
 162 #define __NR_sched_setparam             154
 163 #define __NR_sched_getparam             155
 164 #define __NR_sched_setscheduler         156
 165 #define __NR_sched_getscheduler         157
 166 #define __NR_sched_yield                158
 167 #define __NR_sched_get_priority_max     159
 168 #define __NR_sched_get_priority_min     160
 169 #define __NR_sched_rr_get_interval      161
 170 #define __NR_nanosleep          162
 171 #define __NR_mremap             163
 172 
 173 /* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
 174 #define _syscall0(type,name) \
 175 type name(void) \
 176 { \
 177 long __res; \
 178 __asm__ volatile ("int $0x80" \
 179         : "=a" (__res) \
 180         : "0" (__NR_##name)); \
 181 if (__res >= 0) \
 182         return (type) __res; \
 183 errno = -__res; \
 184 return -1; \
 185 }
 186 
 187 #define _syscall1(type,name,type1,arg1) \
 188 type name(type1 arg1) \
 189 { \
 190 long __res; \
 191 __asm__ volatile ("int $0x80" \
 192         : "=a" (__res) \
 193         : "0" (__NR_##name),"b" ((long)(arg1))); \
 194 if (__res >= 0) \
 195         return (type) __res; \
 196 errno = -__res; \
 197 return -1; \
 198 }
 199 
 200 #define _syscall2(type,name,type1,arg1,type2,arg2) \
 201 type name(type1 arg1,type2 arg2) \
 202 { \
 203 long __res; \
 204 __asm__ volatile ("int $0x80" \
 205         : "=a" (__res) \
 206         : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2))); \
 207 if (__res >= 0) \
 208         return (type) __res; \
 209 errno = -__res; \
 210 return -1; \
 211 }
 212 
 213 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
 214 type name(type1 arg1,type2 arg2,type3 arg3) \
 215 { \
 216 long __res; \
 217 __asm__ volatile ("int $0x80" \
 218         : "=a" (__res) \
 219         : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
 220                   "d" ((long)(arg3))); \
 221 if (__res>=0) \
 222         return (type) __res; \
 223 errno=-__res; \
 224 return -1; \
 225 }
 226 
 227 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
 228 type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
 229 { \
 230 long __res; \
 231 __asm__ volatile ("int $0x80" \
 232         : "=a" (__res) \
 233         : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
 234           "d" ((long)(arg3)),"S" ((long)(arg4))); \
 235 if (__res>=0) \
 236         return (type) __res; \
 237 errno=-__res; \
 238 return -1; \
 239 } 
 240 
 241 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
 242           type5,arg5) \
 243 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
 244 { \
 245 long __res; \
 246 __asm__ volatile ("int $0x80" \
 247         : "=a" (__res) \
 248         : "0" (__NR_##name),"b" ((long)(arg1)),"c" ((long)(arg2)), \
 249           "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
 250 if (__res>=0) \
 251         return (type) __res; \
 252 errno=-__res; \
 253 return -1; \
 254 }
 255 
 256 #ifdef __KERNEL_SYSCALLS__
 257 
 258 /*
 259  * we need this inline - forking from kernel space will result
 260  * in NO COPY ON WRITE (!!!), until an execve is executed. This
 261  * is no problem, but for the stack. This is handled by not letting
 262  * main() use the stack at all after fork(). Thus, no function
 263  * calls - which means inline code for fork too, as otherwise we
 264  * would use the stack upon exit from 'fork()'.
 265  *
 266  * Actually only pause and fork are needed inline, so that there
 267  * won't be any messing with the stack from main(), but we define
 268  * some others too.
 269  */
 270 #define __NR__exit __NR_exit
 271 static inline _syscall0(int,idle)
     /*  */
 272 static inline _syscall0(int,fork)
 273 static inline _syscall2(int,clone,unsigned long,flags,char *,esp)
 274 static inline _syscall0(int,pause)
 275 static inline _syscall0(int,setup)
 276 static inline _syscall0(int,sync)
 277 static inline _syscall0(pid_t,setsid)
 278 static inline _syscall3(int,write,int,fd,const char *,buf,off_t,count)
 279 static inline _syscall1(int,dup,int,fd)
 280 static inline _syscall3(int,execve,const char *,file,char **,argv,char **,envp)
 281 static inline _syscall3(int,open,const char *,file,int,flag,int,mode)
 282 static inline _syscall1(int,close,int,fd)
 283 static inline _syscall1(int,_exit,int,exitcode)
 284 static inline _syscall3(pid_t,waitpid,pid_t,pid,int *,wait_stat,int,options)
 285 
 286 static inline pid_t wait(int * wait_stat)
 287 {
 288         return waitpid(-1,wait_stat,0);
 289 }
 290 
 291 /*
 292  * This is the mechanism for creating a new kernel thread.
 293  *
 294  * NOTE! Only a kernel-only process(ie the swapper or direct descendants
 295  * who haven't done an "execve()") should use this: it will work within
 296  * a system call from a "real" process, but the process memory space will
 297  * not be free'd until both the parent and the child have exited.
 298  */
 299 static inline pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
     /*  */
 300 {
 301         long retval;
 302 
 303         __asm__ __volatile__(
 304                 "movl %%esp,%%esi\n\t"
 305                 "int $0x80\n\t"         /* Linux/i386 system call */
 306                 "cmpl %%esp,%%esi\n\t"  /* child or parent? */
 307                 "je 1f\n\t"             /* parent - jump */
 308                 "pushl %3\n\t"          /* push argument */
 309                 "call *%4\n\t"          /* call fn */
 310                 "movl %2,%0\n\t"        /* exit */
 311                 "int $0x80\n"
 312                 "1:\t"
 313                 :"=a" (retval)
 314                 :"0" (__NR_clone), "i" (__NR_exit),
 315                  "r" (arg), "r" (fn),
 316                  "b" (flags | CLONE_VM)
 317                 :"si");
 318         return retval;
 319 }
 320 
 321 #endif
 322 
 323 #endif /* _ASM_I386_UNISTD_H_ */
/* */
root/include/asm-i386/unistd.h

INCLUDED FROM

DEFINITIONS
