Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/kern/syscall_sw.c
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1 /* 2 * Mach Operating System 3 * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie Mellon 24 * the rights to redistribute these changes. 25 */ 26 /* 27 * HISTORY 28 * $Log: syscall_sw.c,v $ 29 * Revision 2.16 93/08/10 15:11:27 mrt 30 * Put atm traps under NET_ATM conditional. 31 * [93/08/02 cmaeda] 32 * Moved syscall_device_writev_request to 39 since it 33 * was conflicting with init_process at 41. Added 34 * comments to trap numbers that are unixoid traps 35 * handled by emulator. 36 * [93/07/19 cmaeda] 37 * 38 * Added device_write traps. 39 * [93/07/03 cmaeda] 40 * 41 * Added evc_wait_clear. Very similar to evc_wait. 42 * [93/07/03 cmaeda] 43 * 44 * Included traps for network interface. 45 * [93/06/09 15:42:13 jcb] 46 * 47 * Revision 2.15 92/08/03 17:39:34 jfriedl 48 * removed silly prototypes 49 * [92/08/02 jfriedl] 50 * 51 * Revision 2.14 92/05/21 17:16:12 jfriedl 52 * tried prototypes. 53 * [92/05/20 jfriedl] 54 * 55 * Revision 2.13 92/02/19 16:06:58 elf 56 * Added syscall_thread_depress_abort. 57 * [92/01/20 rwd] 58 * 59 * Revision 2.12 92/01/03 20:40:19 dbg 60 * Use continuations always in evc_wait. 61 * [91/12/27 af] 62 * 63 * Revision 2.11 91/12/13 14:54:49 jsb 64 * Added evc_wait(). 65 * [91/12/12 17:42:00 af] 66 * 67 * Revision 2.10 91/05/14 16:47:45 mrt 68 * Correcting copyright 69 * 70 * Revision 2.9 91/03/16 14:52:12 rpd 71 * Changed swtch, swtch_pri, and thread_switch to MACH_TRAP_STACK. 72 * [91/01/17 rpd] 73 * 74 * Revision 2.8 91/02/05 17:29:44 mrt 75 * Changed to new Mach copyright 76 * [91/02/01 16:18:37 mrt] 77 * 78 * Revision 2.7 91/01/08 15:17:21 rpd 79 * Changed to use MACH_TRAP_STACK appropriately. 80 * [90/12/27 21:20:57 rpd] 81 * 82 * Revision 2.6 90/09/09 14:32:58 rpd 83 * Added mach_port_allocate_name 84 * [90/09/05 rwd] 85 * 86 * Revision 2.5 90/06/19 22:59:30 rpd 87 * Added mach_port_allocate, mach_port_deallocate, mach_port_insert_right. 88 * [90/06/02 rpd] 89 * 90 * Revision 2.4 90/06/02 14:56:26 rpd 91 * Updated for new IPC and scheduling technology. 92 * [90/03/26 22:20:34 rpd] 93 * 94 * Revision 2.3 90/05/29 18:36:48 rwd 95 * New traps from rfr (vm_map, task_create etc.) 96 * [90/04/20 rwd] 97 * 98 * Revision 2.2 89/10/16 15:22:13 rwd 99 * Added debug option for kern_invalid. 100 * [89/09/29 rwd] 101 * 102 * Made swtch_pri trap call swtch, ignoring priority argument (it 103 * scrambles scheduling). 104 * [89/02/02 dbg] 105 * 106 * Removed all non-MACH calls and options. 107 * [88/10/28 dbg] 108 * 109 * Revision 2.1 89/08/03 15:51:36 rwd 110 * Created. 111 * 112 * Revision 2.8 89/03/05 16:48:24 rpd 113 * Renamed the obsolete msg_{send,receive,rpc} traps to 114 * msg_{send,receive,rpc}_old. 115 * [89/02/15 13:50:10 rpd] 116 * 117 * Revision 2.7 89/02/25 18:09:05 gm0w 118 * Changes for cleanup. 119 * 120 * Revision 2.6 89/01/10 23:32:13 rpd 121 * Added MACH_IPC_XXXHACK conditionals around the obsolete IPC traps. 122 * [89/01/10 23:10:07 rpd] 123 * 124 * Revision 2.5 88/12/19 02:47:31 mwyoung 125 * Removed old MACH conditionals. 126 * [88/12/13 mwyoung] 127 * 128 * Revision 2.4 88/10/27 10:48:53 rpd 129 * Changed msg_{send,receive,rpc}_trap to 20, 21, 22. 130 * [88/10/26 14:45:13 rpd] 131 * 132 * Revision 2.3 88/10/11 10:20:33 rpd 133 * Changed includes to the new style. Replaced msg_receive_, 134 * msg_rpc_ with msg_send_trap, msg_receive_trap, msg_rpc_trap. 135 * [88/10/06 12:22:30 rpd] 136 * 137 * 7-Apr-88 David Black (dlb) at Carnegie-Mellon University 138 * removed thread_times(). 139 * 140 * 18-Jan-88 David Golub (dbg) at Carnegie-Mellon University 141 * Replaced task_data with thread_reply; change is invisible to 142 * users. 143 * 144 * 03-Mar-88 Douglas Orr (dorr) at Carnegie-Mellon University 145 * Added htg_unix_syscall() 146 * 147 * 27-Apr-87 Michael Young (mwyoung) at Carnegie-Mellon University 148 * Added new forms of msg_receive, msg_rpc. 149 * 150 * 1-Apr-87 William Bolosky (bolosky) at Carnegie-Mellon University 151 * Added "WARNING:" comment. 152 * 153 * 30-Mar-87 David Black (dlb) at Carnegie-Mellon University 154 * Added kern_timestamp() 155 * 156 * 27-Mar-87 David Black (dlb) at Carnegie-Mellon University 157 * Added thread_times() for MACH_TIME_NEW. Flushed MACH_TIME. 158 * 159 * 25-Mar-87 Avadis Tevanian (avie) at Carnegie-Mellon University 160 * Added map_fd. 161 * 162 * 27-Feb-87 Michael Young (mwyoung) at Carnegie-Mellon University 163 * MACH_IPC: Turn off Accent compatibility traps. 164 * 165 * 4-Feb-87 Michael Young (mwyoung) at Carnegie-Mellon University 166 * Added ctimes() routine, to make a workable restore program. 167 * 168 * 10-Nov-86 Michael Young (mwyoung) at Carnegie-Mellon University 169 * Eliminated KPortToPID. 170 * 171 * 7-Nov-86 Michael Young (mwyoung) at Carnegie-Mellon University 172 * Added "init_process". 173 * 174 * 29-Oct-86 Michael Young (mwyoung) at Carnegie-Mellon University 175 * Added inode_swap_preference. 176 * 177 * 12-Oct-86 Michael Young (mwyoung) at Carnegie-Mellon University 178 * Major reorganization: added msg_send, msg_receive, msg_rpc; 179 * moved real Mach traps up front; renamed table. 180 */ 181 182 #include <mach_ipc_compat.h> 183 #include <net_atm.h> 184 185 #include <mach/port.h> 186 #include <mach/kern_return.h> 187 #include <kern/syscall_sw.h> 188 189 /* Include declarations of the trap functions. */ 190 #include <mach/mach_traps.h> 191 #include <mach/message.h> 192 #include <kern/syscall_subr.h> 193 #include <chips/nw_mk.h> 194 195 196 /* 197 * To add a new entry: 198 * Add an "MACH_TRAP(routine, arg count)" to the table below. 199 * 200 * Add trap definition to mach/syscall_sw.h and 201 * recompile user library. 202 * 203 * WARNING: If you add a trap which requires more than 7 204 * parameters, mach/ca/syscall_sw.h and ca/trap.c both need 205 * to be modified for it to work successfully on an 206 * RT. Similarly, mach/mips/syscall_sw.h and mips/locore.s 207 * need to be modified before it will work on Pmaxen. 208 * 209 * WARNING: Don't use numbers 0 through -9. They (along with 210 * the positive numbers) are reserved for Unix. 211 */ 212 213 int kern_invalid_debug = 0; 214 215 mach_port_t null_port() 216 { 217 if (kern_invalid_debug) Debugger("null_port mach trap"); 218 return(MACH_PORT_NULL); 219 } 220 221 kern_return_t kern_invalid() 222 { 223 if (kern_invalid_debug) Debugger("kern_invalid mach trap"); 224 return(KERN_INVALID_ARGUMENT); 225 } 226 227 extern kern_return_t syscall_vm_map(); 228 extern kern_return_t syscall_vm_allocate(); 229 extern kern_return_t syscall_vm_deallocate(); 230 231 extern kern_return_t syscall_task_create(); 232 extern kern_return_t syscall_task_terminate(); 233 extern kern_return_t syscall_task_suspend(); 234 extern kern_return_t syscall_task_set_special_port(); 235 236 extern kern_return_t syscall_mach_port_allocate(); 237 extern kern_return_t syscall_mach_port_deallocate(); 238 extern kern_return_t syscall_mach_port_insert_right(); 239 extern kern_return_t syscall_mach_port_allocate_name(); 240 241 extern kern_return_t syscall_thread_depress_abort(); 242 extern kern_return_t evc_wait(); 243 extern kern_return_t evc_wait_clear(); 244 245 extern kern_return_t syscall_device_write_request(); 246 extern kern_return_t syscall_device_writev_request(); 247 248 mach_trap_t mach_trap_table[] = { 249 MACH_TRAP(kern_invalid, 0), /* 0 */ /* Unix */ 250 MACH_TRAP(kern_invalid, 0), /* 1 */ /* Unix */ 251 MACH_TRAP(kern_invalid, 0), /* 2 */ /* Unix */ 252 MACH_TRAP(kern_invalid, 0), /* 3 */ /* Unix */ 253 MACH_TRAP(kern_invalid, 0), /* 4 */ /* Unix */ 254 MACH_TRAP(kern_invalid, 0), /* 5 */ /* Unix */ 255 MACH_TRAP(kern_invalid, 0), /* 6 */ /* Unix */ 256 MACH_TRAP(kern_invalid, 0), /* 7 */ /* Unix */ 257 MACH_TRAP(kern_invalid, 0), /* 8 */ /* Unix */ 258 MACH_TRAP(kern_invalid, 0), /* 9 */ /* Unix */ 259 260 #if MACH_IPC_COMPAT 261 MACH_TRAP(task_self, 0), /* 10 */ /* obsolete */ 262 MACH_TRAP(thread_reply, 0), /* 11 */ /* obsolete */ 263 MACH_TRAP(task_notify, 0), /* 12 */ /* obsolete */ 264 MACH_TRAP(thread_self, 0), /* 13 */ /* obsolete */ 265 #else /* MACH_IPC_COMPAT */ 266 MACH_TRAP(null_port, 0), /* 10 */ 267 MACH_TRAP(null_port, 0), /* 11 */ 268 MACH_TRAP(null_port, 0), /* 12 */ 269 MACH_TRAP(null_port, 0), /* 13 */ 270 #endif /* MACH_IPC_COMPAT */ 271 MACH_TRAP(kern_invalid, 0), /* 14 */ 272 MACH_TRAP(kern_invalid, 0), /* 15 */ 273 MACH_TRAP(kern_invalid, 0), /* 16 */ 274 MACH_TRAP_STACK(evc_wait, 1), /* 17 */ 275 MACH_TRAP_STACK(evc_wait_clear, 1), /* 18 */ 276 MACH_TRAP(kern_invalid, 0), /* 19 */ 277 278 #if MACH_IPC_COMPAT 279 MACH_TRAP(msg_send_trap, 4), /* 20 */ /* obsolete */ 280 MACH_TRAP_STACK(msg_receive_trap, 5), /* 21 */ /* obsolete */ 281 MACH_TRAP_STACK(msg_rpc_trap, 6), /* 22 */ /* obsolete */ 282 #else /* MACH_IPC_COMPAT */ 283 MACH_TRAP(kern_invalid, 0), /* 20 */ 284 MACH_TRAP(kern_invalid, 0), /* 21 */ 285 MACH_TRAP(kern_invalid, 0), /* 22 */ 286 #endif /* MACH_IPC_COMPAT */ 287 MACH_TRAP(kern_invalid, 0), /* 23 */ 288 MACH_TRAP(kern_invalid, 0), /* 24 */ 289 MACH_TRAP_STACK(mach_msg_trap, 7), /* 25 */ 290 MACH_TRAP(mach_reply_port, 0), /* 26 */ 291 MACH_TRAP(mach_thread_self, 0), /* 27 */ 292 MACH_TRAP(mach_task_self, 0), /* 28 */ 293 MACH_TRAP(mach_host_self, 0), /* 29 */ 294 295 MACH_TRAP(kern_invalid, 0), /* 30 */ 296 MACH_TRAP(kern_invalid, 0), /* 31 */ 297 MACH_TRAP(kern_invalid, 0), /* 32 */ 298 MACH_TRAP(kern_invalid, 0), /* 33 emul: task_by_pid */ 299 MACH_TRAP(kern_invalid, 0), /* 34 emul: pid_by_task */ 300 MACH_TRAP(kern_invalid, 0), /* 35 */ 301 MACH_TRAP(kern_invalid, 0), /* 36 */ 302 MACH_TRAP(kern_invalid, 0), /* 37 */ 303 MACH_TRAP(kern_invalid, 0), /* 38 */ 304 305 MACH_TRAP(syscall_device_writev_request, 6), /* 39 */ 306 MACH_TRAP(syscall_device_write_request, 6), /* 40 */ 307 308 MACH_TRAP(kern_invalid, 0), /* 41 emul: init_process */ 309 MACH_TRAP(kern_invalid, 0), /* 42 */ 310 MACH_TRAP(kern_invalid, 0), /* 43 emul: map_fd */ 311 MACH_TRAP(kern_invalid, 0), /* 44 emul: rfs_make_symlink */ 312 MACH_TRAP(kern_invalid, 0), /* 45 */ 313 MACH_TRAP(kern_invalid, 0), /* 46 */ 314 MACH_TRAP(kern_invalid, 0), /* 47 */ 315 MACH_TRAP(kern_invalid, 0), /* 48 */ 316 MACH_TRAP(kern_invalid, 0), /* 49 */ 317 318 MACH_TRAP(kern_invalid, 0), /* 50 */ 319 MACH_TRAP(kern_invalid, 0), /* 51 */ 320 MACH_TRAP(kern_invalid, 0), /* 52 emul: htg_syscall */ 321 MACH_TRAP(kern_invalid, 0), /* 53 emul: set_ras_address */ 322 MACH_TRAP(kern_invalid, 0), /* 54 */ 323 #if MACH_IPC_COMPAT 324 MACH_TRAP(host_self, 0), /* 55 */ 325 #else /* MACH_IPC_COMPAT */ 326 MACH_TRAP(null_port, 0), /* 55 */ 327 #endif /* MACH_IPC_COMPAT */ 328 MACH_TRAP(null_port, 0), /* 56 */ 329 MACH_TRAP(kern_invalid, 0), /* 57 */ 330 MACH_TRAP(kern_invalid, 0), /* 58 */ 331 MACH_TRAP_STACK(swtch_pri, 1), /* 59 */ 332 333 MACH_TRAP_STACK(swtch, 0), /* 60 */ 334 MACH_TRAP_STACK(thread_switch, 3), /* 61 */ 335 MACH_TRAP(kern_invalid, 0), /* 62 */ 336 MACH_TRAP(kern_invalid, 0), /* 63 */ 337 MACH_TRAP(syscall_vm_map, 11), /* 64 */ 338 MACH_TRAP(syscall_vm_allocate, 4), /* 65 */ 339 MACH_TRAP(syscall_vm_deallocate, 3), /* 66 */ 340 MACH_TRAP(kern_invalid, 0), /* 67 */ 341 MACH_TRAP(syscall_task_create, 3), /* 68 */ 342 MACH_TRAP(syscall_task_terminate, 1), /* 69 */ 343 344 MACH_TRAP(syscall_task_suspend, 1), /* 70 */ 345 MACH_TRAP(syscall_task_set_special_port, 3), /* 71 */ 346 MACH_TRAP(syscall_mach_port_allocate, 3), /* 72 */ 347 MACH_TRAP(syscall_mach_port_deallocate, 2), /* 73 */ 348 MACH_TRAP(syscall_mach_port_insert_right, 4), /* 74 */ 349 MACH_TRAP(syscall_mach_port_allocate_name, 3), /* 75 */ 350 MACH_TRAP(syscall_thread_depress_abort, 1), /* 76 */ 351 MACH_TRAP(kern_invalid, 0), /* 77 */ 352 MACH_TRAP(kern_invalid, 0), /* 78 */ 353 MACH_TRAP(kern_invalid, 0), /* 79 */ 354 355 #if NET_ATM 356 MACH_TRAP(mk_update,3), /* 80 */ 357 MACH_TRAP(mk_lookup,2), /* 81 */ 358 MACH_TRAP_STACK(mk_endpoint_allocate,4), /* 82 */ 359 MACH_TRAP_STACK(mk_endpoint_deallocate,1), /* 83 */ 360 MACH_TRAP(mk_buffer_allocate,2), /* 84 */ 361 MACH_TRAP(mk_buffer_deallocate,2), /* 85 */ 362 MACH_TRAP_STACK(mk_connection_open,4), /* 86 */ 363 MACH_TRAP_STACK(mk_connection_accept,3), /* 87 */ 364 MACH_TRAP_STACK(mk_connection_close,1), /* 88 */ 365 MACH_TRAP_STACK(mk_multicast_add,4), /* 89 */ 366 MACH_TRAP_STACK(mk_multicast_drop,4), /* 90 */ 367 MACH_TRAP(mk_endpoint_status,3), /* 91 */ 368 MACH_TRAP_STACK(mk_send,3), /* 92 */ 369 MACH_TRAP_STACK(mk_receive,2), /* 93 */ 370 MACH_TRAP_STACK(mk_rpc,4), /* 94 */ 371 MACH_TRAP_STACK(mk_select,3), /* 95 */ 372 #else /* NET_ATM */ 373 MACH_TRAP(kern_invalid, 0), /* 80 */ 374 MACH_TRAP(kern_invalid, 0), /* 81 */ 375 MACH_TRAP(kern_invalid, 0), /* 82 */ 376 MACH_TRAP(kern_invalid, 0), /* 83 */ 377 MACH_TRAP(kern_invalid, 0), /* 84 */ 378 MACH_TRAP(kern_invalid, 0), /* 85 */ 379 MACH_TRAP(kern_invalid, 0), /* 86 */ 380 MACH_TRAP(kern_invalid, 0), /* 87 */ 381 MACH_TRAP(kern_invalid, 0), /* 88 */ 382 MACH_TRAP(kern_invalid, 0), /* 89 */ 383 MACH_TRAP(kern_invalid, 0), /* 90 */ 384 MACH_TRAP(kern_invalid, 0), /* 91 */ 385 MACH_TRAP(kern_invalid, 0), /* 92 */ 386 MACH_TRAP(kern_invalid, 0), /* 93 */ 387 MACH_TRAP(kern_invalid, 0), /* 94 */ 388 MACH_TRAP(kern_invalid, 0), /* 95 */ 389 #endif /* NET_ATM */ 390 391 MACH_TRAP(kern_invalid, 0), /* 96 */ 392 MACH_TRAP(kern_invalid, 0), /* 97 */ 393 MACH_TRAP(kern_invalid, 0), /* 98 */ 394 MACH_TRAP(kern_invalid, 0), /* 99 */ 395 396 MACH_TRAP(kern_invalid, 0), /* 100 */ 397 MACH_TRAP(kern_invalid, 0), /* 101 */ 398 MACH_TRAP(kern_invalid, 0), /* 102 */ 399 MACH_TRAP(kern_invalid, 0), /* 103 */ 400 MACH_TRAP(kern_invalid, 0), /* 104 */ 401 MACH_TRAP(kern_invalid, 0), /* 105 */ 402 MACH_TRAP(kern_invalid, 0), /* 106 */ 403 MACH_TRAP(kern_invalid, 0), /* 107 */ 404 MACH_TRAP(kern_invalid, 0), /* 108 */ 405 MACH_TRAP(kern_invalid, 0), /* 109 */ 406 407 MACH_TRAP(kern_invalid, 0), /* 110 */ 408 MACH_TRAP(kern_invalid, 0), /* 111 */ 409 MACH_TRAP(kern_invalid, 0), /* 112 */ 410 MACH_TRAP(kern_invalid, 0), /* 113 */ 411 MACH_TRAP(kern_invalid, 0), /* 114 */ 412 MACH_TRAP(kern_invalid, 0), /* 115 */ 413 MACH_TRAP(kern_invalid, 0), /* 116 */ 414 MACH_TRAP(kern_invalid, 0), /* 117 */ 415 MACH_TRAP(kern_invalid, 0), /* 118 */ 416 MACH_TRAP(kern_invalid, 0), /* 119 */ 417 418 MACH_TRAP(kern_invalid, 0), /* 120 */ 419 MACH_TRAP(kern_invalid, 0), /* 121 */ 420 MACH_TRAP(kern_invalid, 0), /* 122 */ 421 MACH_TRAP(kern_invalid, 0), /* 123 */ 422 MACH_TRAP(kern_invalid, 0), /* 124 */ 423 MACH_TRAP(kern_invalid, 0), /* 125 */ 424 MACH_TRAP(kern_invalid, 0), /* 126 */ 425 MACH_TRAP(kern_invalid, 0), /* 127 */ 426 MACH_TRAP(kern_invalid, 0), /* 128 */ 427 MACH_TRAP(kern_invalid, 0), /* 129 */ 428 }; 429 430 int mach_trap_count = (sizeof(mach_trap_table) / sizeof(mach_trap_table[0]));
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