patch-1.3.44 linux/include/asm-sparc/unistd.h

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diff -u --recursive --new-file v1.3.43/linux/include/asm-sparc/unistd.h linux/include/asm-sparc/unistd.h
@@ -1,3 +1,4 @@
+/* $Id: unistd.h,v 1.15 1995/11/25 02:33:12 davem Exp $ */
 #ifndef _SPARC_UNISTD_H
 #define _SPARC_UNISTD_H
 
@@ -9,23 +10,271 @@
  * before the trap into the system call with gcc 'asm' statements.
  *
  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ *
+ * SunOS compatability based upon preliminary work which is:
+ *
+ * Copyright (C) 1995 Adrian M. Rodriguez (adrian@remus.rutgers.edu)
  */
 
-/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
+#define __NR_setup                0 /* Used only by init, to get system going.     */
+#define __NR_exit                 1 /* Common                                      */
+#define __NR_fork                 2 /* Common                                      */
+#define __NR_read                 3 /* Common                                      */
+#define __NR_write                4 /* Common                                      */
+#define __NR_open                 5 /* Common                                      */
+#define __NR_close                6 /* Common                                      */
+#define __NR_wait4                7 /* Common                                      */
+#define __NR_creat                8 /* Common                                      */
+#define __NR_link                 9 /* Common                                      */
+#define __NR_unlink              10 /* Common                                      */
+#define __NR_execv               11 /* SunOS Specific                              */
+#define __NR_chdir               12 /* Common                                      */
+/* #define __NR_ni_syscall       13    ENOSYS under SunOS                          */
+#define __NR_mknod               14 /* Common                                      */
+#define __NR_chmod               15 /* Common                                      */
+#define __NR_chown               16 /* Common                                      */
+#define __NR_brk                 17 /* Common                                      */
+/* #define __NR_ni_syscall       18    ENOSYS under SunOS                          */
+#define __NR_lseek               19 /* Common                                      */
+#define __NR_getpid              20 /* Common                                      */
+/* #define __NR_ni_syscall       21    ENOSYS under SunOS                          */
+/* #define __NR_ni_syscall       22    ENOSYS under SunOS                          */
+#define __NR_setuid              23 /* Implemented via setreuid in SunOS           */
+#define __NR_getuid              24 /* Common                                      */
+/* #define __NR_ni_syscall       25    ENOSYS under SunOS                          */
+#define __NR_ptrace              26 /* Common                                      */
+#define __NR_alarm               27 /* Implemented via setitimer in SunOS          */
+/* #define __NR_ni_syscall       28    ENOSYS under SunOS                          */
+#define __NR_pause               29 /* Is sigblock(0)->sigpause() in SunOS         */
+#define __NR_utime               30 /* Implemented via utimes() under SunOS        */
+#define __NR_stty                31 /* Implemented via ioctl() under SunOS         */
+#define __NR_gtty                32 /* Implemented via ioctl() under SunOS         */
+#define __NR_access              33 /* Common                                      */
+#define __NR_nice                34 /* Implemented via get/setpriority() in SunOS  */
+#define __NR_ftime               35 /* Implemented via gettimeofday() in SunOS     */
+#define __NR_sync                36 /* Common                                      */
+#define __NR_kill                37 /* Common                                      */
+#define __NR_stat                38 /* Common                                      */
+/* #define __NR_ni_syscall       39    ENOSYS under SunOS                          */
+#define __NR_lstat               40 /* Common                                      */
+#define __NR_dup                 41 /* Common                                      */
+#define __NR_pipe                42 /* Common                                      */
+#define __NR_times               43 /* Implemented via getrusage() in SunOS        */
+#define __NR_profil              44 /* Common                                      */
+/* #define __NR_ni_syscall       45    ENOSYS under SunOS                          */
+#define __NR_setgid              46 /* Implemented via setregid() in SunOS         */
+#define __NR_getgid              47 /* Common                                      */
+#define __NR_signal              48 /* Implemented via sigvec() in SunOS           */
+#define __NR_geteuid             49 /* SunOS calls getuid()                        */
+#define __NR_getegid             50 /* SunOS calls getgid()                        */
+#define __NR_acct                51 /* Common                                      */
+/* #define __NR_ni_syscall       52    ENOSYS under SunOS                          */
+#define __NR_mctl                53 /* SunOS specific                              */
+#define __NR_ioctl               54 /* Common                                      */
+#define __NR_reboot              55 /* Common                                      */
+/* #define __NR_ni_syscall       56    ENOSYS under SunOS                          */
+#define __NR_symlink             57 /* Common                                      */
+#define __NR_readlink            58 /* Common                                      */
+#define __NR_execve              59 /* Common                                      */
+#define __NR_umask               60 /* Common                                      */
+#define __NR_chroot              61 /* Common                                      */
+#define __NR_fstat               62 /* Common                                      */
+/* #define __NR_ni_syscall       63    ENOSYS under SunOS                          */
+#define __NR_getpagesize         64 /* Common                                      */
+#define __NR_msync               65 /* Common in newer 1.3.x revs...               */
+/* #define __NR_ni_syscall       66    ENOSYS under SunOS                          */
+/* #define __NR_ni_syscall       67    ENOSYS under SunOS                          */
+/* #define __NR_ni_syscall       68    ENOSYS under SunOS                          */
+#define __NR_sbrk                69 /* SunOS Specific                              */
+#define __NR_sstk                70 /* SunOS Specific                              */
+#define __NR_mmap                71 /* Common                                      */
+#define __NR_vadvise             72 /* SunOS Specific                              */
+#define __NR_munmap              73 /* Common                                      */
+#define __NR_mprotect            74 /* Common                                      */
+#define __NR_madvise             75 /* SunOS Specific                              */
+#define __NR_vhangup             76 /* Common                                      */
+/* #define __NR_ni_syscall       77    ENOSYS under SunOS                          */
+#define __NR_mincore             78 /* SunOS Specific                              */
+#define __NR_getgroups           79 /* Common                                      */
+#define __NR_setgroups           80 /* Common                                      */
+#define __NR_getpgrp             81 /* Common                                      */
+#define __NR_setpgrp             82 /* setpgid, same difference...                 */
+#define __NR_setitimer           83 /* Common                                      */
+/* #define __NR_ni_syscall       84    ENOSYS under SunOS                          */
+#define __NR_swapon              85 /* Common                                      */
+#define __NR_getitimer           86 /* Common                                      */
+#define __NR_gethostname         87 /* SunOS Specific                              */
+#define __NR_sethostname         88 /* Common                                      */
+#define __NR_getdtablesize       89 /* SunOS Specific                              */
+#define __NR_dup2                90 /* Common                                      */
+#define __NR_getdopt             91 /* SunOS Specific                              */
+#define __NR_fcntl               92 /* Common                                      */
+#define __NR_select              93 /* Common                                      */
+#define __NR_setdopt             94 /* SunOS Specific                              */
+#define __NR_fsync               95 /* Common                                      */
+#define __NR_setpriority         96 /* Common                                      */
+#define __NR_socket              97 /* SunOS Specific                              */
+#define __NR_connect             98 /* SunOS Specific                              */
+#define __NR_accept              99 /* SunOS Specific                              */
+#define __NR_getpriority        100 /* Common                                      */
+#define __NR_send               101 /* SunOS Specific                              */
+#define __NR_recv               102 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      103    ENOSYS under SunOS                          */
+#define __NR_bind               104 /* SunOS Specific                              */
+#define __NR_setsockopt         105 /* SunOS Specific                              */
+#define __NR_listen             106 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      107    ENOSYS under SunOS                          */
+#define __NR_sigvec             108 /* SunOS Specific                              */
+#define __NR_sigblock           109 /* SunOS Specific                              */
+#define __NR_sigsetmask         110 /* SunOS Specific                              */
+#define __NR_sigpause           111 /* SunOS Specific                              */
+#define __NR_sigstack           112 /* SunOS Specific                              */
+#define __NR_recvmsg            113 /* SunOS Specific                              */
+#define __NR_sendmsg            114 /* SunOS Specific                              */
+#define __NR_vtrace             115 /* SunOS Specific                              */
+#define __NR_gettimeofday       116 /* Common                                      */
+#define __NR_getrusage          117 /* Common                                      */
+#define __NR_getsockopt         118 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      119    ENOSYS under SunOS                          */
+#define __NR_readv              120 /* Common                                      */
+#define __NR_writev             121 /* Common                                      */
+#define __NR_settimeofday       122 /* Common                                      */
+#define __NR_fchown             123 /* Common                                      */
+#define __NR_fchmod             124 /* Common                                      */
+#define __NR_recvfrom           125 /* SunOS Specific                              */
+#define __NR_setreuid           126 /* Common                                      */
+#define __NR_setregid           127 /* Common                                      */
+#define __NR_rename             128 /* Common                                      */
+#define __NR_truncate           129 /* Common                                      */
+#define __NR_ftruncate          130 /* Common                                      */
+#define __NR_flock              131 /* Common                                      */
+/* #define __NR_ni_syscall      132    ENOSYS under SunOS                          */
+#define __NR_sendto             133 /* SunOS Specific                              */
+#define __NR_shutdown           134 /* SunOS Specific                              */
+#define __NR_socketpair         135 /* SunOS Specific                              */
+#define __NR_mkdir              136 /* Common                                      */
+#define __NR_rmdir              137 /* Common                                      */
+#define __NR_utimes             138 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      139    ENOSYS under SunOS                          */
+#define __NR_adjtime            140 /* SunOS Specific                              */
+#define __NR_getpeername        141 /* SunOS Specific                              */
+#define __NR_gethostid          142 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      143    ENOSYS under SunOS                          */
+#define __NR_getrlimit          144 /* Common                                      */
+#define __NR_setrlimit          145 /* Common                                      */
+#define __NR_killpg             146 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      147    ENOSYS under SunOS                          */
+/* #define __NR_ni_syscall      148    ENOSYS under SunOS                          */
+/* #define __NR_ni_syscall      149    ENOSYS under SunOS                          */
+#define __NR_getsockname        150 /* SunOS Specific                              */
+#define __NR_getmsg             151 /* SunOS Specific                              */
+#define __NR_putmsg             152 /* SunOS Specific                              */
+#define __NR_poll               153 /* SunOS Specific                              */
+/* #define __NR_ni_syscall      154    ENOSYS under SunOS                          */
+#define __NR_nfssvc             155 /* SunOS Specific                              */
+#define __NR_getdirentries      156 /* SunOS Specific                              */
+#define __NR_statfs             157 /* Common                                      */
+#define __NR_fstatfs            158 /* Common                                      */
+#define __NR_umount             159 /* Common                                      */
+#define __NR_async_daemon       160 /* SunOS Specific                              */
+#define __NR_getfh              161 /* SunOS Specific                              */
+#define __NR_getdomainname      162 /* SunOS Specific                              */
+#define __NR_setdomainname      163 /* Common                                      */
+/* #define __NR_ni_syscall      164    ENOSYS under SunOS                          */
+#define __NR_quotactl           165 /* Common                                      */
+#define __NR_exportfs           166 /* SunOS Specific                              */
+#define __NR_mount              167 /* Common                                      */
+#define __NR_ustat              168 /* Common                                      */
+#define __NR_semsys             169 /* SunOS Specific                              */
+#define __NR_msgsys             170 /* SunOS Specific                              */
+#define __NR_shmsys             171 /* SunOS Specific                              */
+#define __NR_auditsys           172 /* SunOS Specific                              */
+#define __NR_rfssys             173 /* SunOS Specific                              */
+#define __NR_getdents           174 /* Common                                      */
+#define __NR_setsid             175 /* Common                                      */
+#define __NR_fchdir             176 /* Common                                      */
+#define __NR_fchroot            177 /* SunOS Specific                              */
+#define __NR_vpixsys            178 /* SunOS Specific                              */
+#define __NR_aioread            179 /* SunOS Specific                              */
+#define __NR_aiowrite           180 /* SunOS Specific                              */
+#define __NR_aiowait            181 /* SunOS Specific                              */
+#define __NR_aiocancel          182 /* SunOS Specific                              */
+#define __NR_sigpending         183 /* Common                                      */
+/* #define __NR_ni_syscall      184    ENOSYS under SunOS                          */
+#define __NR_setpgid            185 /* Common                                      */
+#define __NR_pathconf           186 /* SunOS Specific                              */
+#define __NR_fpathconf          187 /* SunOS Specific                              */
+#define __NR_sysconf            188 /* SunOS Specific                              */
+#define __NR_uname              189 /* Linux Specific                              */
+#define __NR_init_module        190 /* Linux Specific                              */
+#define __NR_personality        191 /* Linux Specific                              */
+#define __NR_prof               192 /* Linux Specific                              */
+#define __NR_break              193 /* Linux Specific                              */
+#define __NR_lock               194 /* Linux Specific                              */
+#define __NR_mpx                195 /* Linux Specific                              */
+#define __NR_ulimit             196 /* Linux Specific                              */
+#define __NR_getppid            197 /* Linux Specific                              */
+#define __NR_sigaction          198 /* Linux Specific                              */
+#define __NR_sgetmask           199 /* Linux Specific                              */
+#define __NR_ssetmask           200 /* Linux Specific                              */
+#define __NR_sigsuspend         201 /* Linux Specific                              */
+#define __NR_oldlstat           202 /* Linux Specific                              */
+#define __NR_uselib             203 /* Linux Specific                              */
+#define __NR_readdir            204 /* Linux Specific                              */
+#define __NR_ioperm             205 /* Linux Specific - i386 specific, unused      */
+#define __NR_socketcall         206 /* Linux Specific                              */
+#define __NR_syslog             207 /* Linux Specific                              */
+#define __NR_olduname           208 /* Linux Specific                              */
+#define __NR_iopl               209 /* Linux Specific - i386 specific, unused      */
+#define __NR_idle               210 /* Linux Specific                              */
+#define __NR_vm86               211 /* Linux Specific - i386 specific, unused      */
+#define __NR_waitpid            212 /* Linux Specific                              */
+#define __NR_swapoff            213 /* Linux Specific                              */
+#define __NR_sysinfo            214 /* Linux Specific                              */
+#define __NR_ipc                215 /* Linux Specific                              */
+#define __NR_sigreturn          216 /* Linux Specific                              */
+#define __NR_clone              217 /* Linux Specific                              */
+#define __NR_modify_ldt         218 /* Linux Specific - i386 specific, unused      */
+#define __NR_adjtimex           219 /* Linux Specific                              */
+#define __NR_sigprocmask        220 /* Linux Specific                              */
+#define __NR_create_module      221 /* Linux Specific                              */
+#define __NR_delete_module      222 /* Linux Specific                              */
+#define __NR_get_kernel_syms    223 /* Linux Specific                              */
+#define __NR_getpgid            224 /* Linux Specific                              */
+#define __NR_bdflush            225 /* Linux Specific                              */
+#define __NR_sysfs              226 /* Linux Specific                              */
+#define __NR_afs_syscall        227 /* Linux Specific                              */
+#define __NR_setfsuid           228 /* Linux Specific                              */
+#define __NR_setfsgid           229 /* Linux Specific                              */
+#define __NR__newselect         230 /* Linux Specific                              */
+#define __NR_time               231 /* Linux Specific                              */
+#define __NR_oldstat            232 /* Linux Specific                              */
+#define __NR_stime              233 /* Linux Specific                              */
+#define __NR_oldfstat           234 /* Linux Specific                              */
+#define __NR_phys               235 /* Linux Specific                              */
+#define __NR__llseek            236 /* Linux Specific                              */
+#define __NR_mlock              237
+#define __NR_munlock            238
+#define __NR_mlockall           239
+#define __NR_munlockall         240
+
+/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar.
+ * XXX These need to be fixed to check the condition codes to see
+ * XXX the return value is an errorno or success.
+ */
 #define _syscall0(type,name) \
 type name(void) \
 { \
 long __res; \
-__asm__ volatile ("or %%g0, %0, %%o0\n\t" \
+__asm__ volatile ("or %%g0, %0, %%g1\n\t" \
 		  "t 0x10\n\t" \
-		  "nop\n\t" \
 		  "or %%g0, %%o0, %0\n\t" \
 		  : "=r" (__res) \
 		  : "0" (__NR_##name) \
-		  : "o0"); \
+		  : "g1"); \
 if (__res >= 0) \
     return (type) __res; \
-errno = -__res; \
+errno = __res; \
 return -1; \
 }
 
@@ -33,17 +282,16 @@
 type name(type1 arg1) \
 { \
 long __res; \
-__asm__ volatile ("or %%g0, %0, %%o0\n\t" \
-		  "or %%g0, %1, %%o1\n\t" \
+__asm__ volatile ("or %%g0, %0, %%g1\n\t" \
+		  "or %%g0, %1, %%o0\n\t" \
 		  "t 0x10\n\t" \
-		  "nop\n\t" \
 		  "or %%g0, %%o0, %0\n\t" \
 		  : "=r" (__res), "=r" ((long)(arg1)) \
 		  : "0" (__NR_##name),"1" ((long)(arg1)) \
-		  : "o0", "o1"); \
+		  : "g1", "o0"); \
 if (__res >= 0) \
 	return (type) __res; \
-errno = -__res; \
+errno = __res; \
 return -1; \
 }
 
@@ -51,18 +299,17 @@
 type name(type1 arg1,type2 arg2) \
 { \
 long __res; \
-__asm__ volatile ("or %%g0, %0, %%o0\n\t" \
-		  "or %%g0, %1, %%o1\n\t" \
-		  "or %%g0, %2, %%o2\n\t" \
+__asm__ volatile ("or %%g0, %0, %%g1\n\t" \
+		  "or %%g0, %1, %%o0\n\t" \
+		  "or %%g0, %2, %%o1\n\t" \
 		  "t 0x10\n\t" \
-		  "nop\n\t" \
 		  "or %%g0, %%o0, %0\n\t" \
-		  : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(args)) \
+		  : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)) \
 		  : "0" (__NR_##name),"1" ((long)(arg1)),"2" ((long)(arg2)) \
-		  : "o0", "o1", "o2"); \
+		  : "g1", "o0", "o1"); \
 if (__res >= 0) \
 	return (type) __res; \
-errno = -__res; \
+errno = __res; \
 return -1; \
 }
 
@@ -70,21 +317,20 @@
 type name(type1 arg1,type2 arg2,type3 arg3) \
 { \
 long __res; \
-__asm__ volatile ("or %%g0, %0, %%o0\n\t" \
-		  "or %%g0, %1, %%o1\n\t" \
-		  "or %%g0, %2, %%o2\n\t" \
-		  "or %%g0, %3, %%o3\n\t" \
+__asm__ volatile ("or %%g0, %0, %%g1\n\t" \
+		  "or %%g0, %1, %%o0\n\t" \
+		  "or %%g0, %2, %%o1\n\t" \
+		  "or %%g0, %3, %%o2\n\t" \
 		  "t 0x10\n\t" \
-		  "nop\n\t" \
 		  "or %%g0, %%o0, %0\n\t" \
 		  : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)), \
 		    "=r" ((long)(arg3)) \
 		  : "0" (__NR_##name), "1" ((long)(arg1)), "2" ((long)(arg2)), \
 		    "3" ((long)(arg3)) \
-		  : "o0", "o1", "o2", "o3"); \
+		  : "g1", "o0", "o1", "o2"); \
 if (__res>=0) \
 	return (type) __res; \
-errno=-__res; \
+errno = __res; \
 return -1; \
 }
 
@@ -92,22 +338,21 @@
 type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
 { \
 long __res; \
-__asm__ volatile ("or %%g0, %0, %%o0\n\t" \
-		  "or %%g0, %1, %%o1\n\t" \
-		  "or %%g0, %2, %%o2\n\t" \
-		  "or %%g0, %3, %%o3\n\t" \
-		  "or %%g0, %4, %%o4\n\t" \
+__asm__ volatile ("or %%g0, %0, %%g1\n\t" \
+		  "or %%g0, %1, %%o0\n\t" \
+		  "or %%g0, %2, %%o1\n\t" \
+		  "or %%g0, %3, %%o2\n\t" \
+		  "or %%g0, %4, %%o3\n\t" \
 		  "t 0x10\n\t" \
-		  "nop\n\t" \
 		  "or %%g0, %%o0, %0\n\t" \
 		  : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)), \
 		    "=r" ((long)(arg3)), "=r" ((long)(arg4)) \
 		  : "0" (__NR_##name),"1" ((long)(arg1)),"2" ((long)(arg2)), \
 		    "3" ((long)(arg3)),"4" ((long)(arg4)) \
-		  : "o0", "o1", "o2", "o3", "o4"); \
+		  : "g1", "o0", "o1", "o2", "o3"); \
 if (__res>=0) \
 	return (type) __res; \
-errno=-__res; \
+errno = __res; \
 return -1; \
 } 
 
@@ -116,23 +361,22 @@
 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
 { \
 long __res; \
-__asm__ volatile ("or %%g0, %0, %%o0\n\t" \
-		  "or %%g0, %1, %%o1\n\t" \
-		  "or %%g0, %2, %%o2\n\t" \
-		  "or %%g0, %3, %%o3\n\t" \
-		  "or %%g0, %4, %%o4\n\t" \
-		  "or %%g0, %5, %%o5\n\t" \
+__asm__ volatile ("or %%g0, %0, %%g1\n\t" \
+		  "or %%g0, %1, %%o0\n\t" \
+		  "or %%g0, %2, %%o1\n\t" \
+		  "or %%g0, %3, %%o2\n\t" \
+		  "or %%g0, %4, %%o3\n\t" \
+		  "or %%g0, %5, %%o4\n\t" \
 		  "t 0x10\n\t" \
-		  "nop\n\t" \
 		  "or %%g0, %%o0, %0\n\t" \
 		  : "=r" (__res), "=r" ((long)(arg1)), "=r" ((long)(arg2)), \
 		    "=r" ((long)(arg3)), "=r" ((long)(arg4)), "=r" ((long)(arg5)) \
 		  : "0" (__NR_##name),"1" ((long)(arg1)),"2" ((long)(arg2)), \
 		    "3" ((long)(arg3)),"4" ((long)(arg4)),"5" ((long)(arg5)) \
-		  : "o0", "o1", "o2", "o3", "o4", "o5"); \
+		  : "g1", "o0", "o1", "o2", "o3", "o4"); \
 if (__res>=0) \
 	return (type) __res; \
-errno=-__res; \
+errno = __res; \
 return -1; \
 }
 
@@ -153,6 +397,7 @@
 #define __NR__exit __NR_exit
 /* static inline _syscall0(int,idle) */
 static inline _syscall0(int,fork)
+static inline _syscall2(int,clone,unsigned long,flags,char *,ksp)
 static inline _syscall0(int,pause)
 /* static inline _syscall0(int,setup) */
 static inline _syscall0(int,sync)
@@ -168,32 +413,57 @@
 extern void sys_idle(void);
 static inline void idle(void)
 {
-	printk("[%d]idle()\n",current->pid);
 	sys_idle();
-	for(;;);
 }
 
 extern int sys_setup(void);
 static inline int setup(void)
 {
-	int retval;
-
-	printk("[%d]setup()\n",current->pid);
-	retval = sys_setup();
-	printk("[%d]setup() returned %d\n",current->pid, retval);
+	return sys_setup();
 }
 
 extern int sys_waitpid(int, int *, int);
 static inline pid_t wait(int * wait_stat)
 {
-	long retval, i;
-	printk("[%d]wait(%p)\n", current->pid, wait_stat);
+	long retval;
 	retval = waitpid(-1,wait_stat,0);
-	printk("[%d]wait(%p) returned %ld\n", current->pid, wait_stat, retval);
-	for (i = 0; i < 1000000000; i++);
 	return retval;
 }
 
-#endif
+/*
+ * This is the mechanism for creating a new kernel thread.
+ *
+ * NOTE! Only a kernel-only process(ie the swapper or direct descendants
+ * who haven't done an "execve()") should use this: it will work within
+ * a system call from a "real" process, but the process memory space will
+ * not be free'd until both the parent and the child have exited.
+ */
+static inline pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags)
+{
+	long retval;
+
+	__asm__ __volatile("mov %4, %%g2\n\t"    /* Set aside fn ptr... */
+			   "mov %5, %%g3\n\t"    /* and arg. */
+			   "mov %1, %%g1\n\t"
+			   "mov %2, %%o0\n\t"    /* Clone flags. */
+			   "mov 0, %%o1\n\t"     /* usp arg == 0 */
+			   "t 0x10\n\t"          /* Linux/Sparc clone(). */
+			   "cmp %%o1, 0\n\t"
+			   "be 1f\n\t"           /* The parent, just return. */
+			   " nop\n\t"            /* Delay slot. */
+			   "jmpl %%g2, %%o7\n\t" /* Call the function. */
+			   " mov %%g3, %%o0\n\t" /* Get back the arg in delay. */
+			   "mov %3, %%g1\n\t"
+			   "t 0x10\n\t"          /* Linux/Sparc exit(). */
+			   /* Notreached by child. */
+			   "1: mov %%o0, %0\n\t" :
+			   "=r" (retval) :
+			   "i" (__NR_clone), "r" (flags | CLONE_VM),
+			   "i" (__NR_exit),  "r" (fn), "r" (arg) :
+			   "g1", "g2", "g3", "o0", "o1", "memory");
+	return retval;
+}
+
+#endif /* __KERNEL_SYSCALLS__ */
 
 #endif /* _SPARC_UNISTD_H */

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