1 /*- 2 * Copyright (c) 1994-1996 Søren Schmidt 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _I386_LINUX_H_ 32 #define _I386_LINUX_H_ 33 34 #include <sys/signal.h> /* for sigval union */ 35 36 #include <i386/linux/linux_syscall.h> 37 38 /* 39 * debugging support 40 */ 41 extern u_char linux_debug_map[]; 42 #define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name) 43 #define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \ 44 (long)td->td_proc->p_pid, (long)td->td_tid 45 #define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \ 46 (long)td->td_proc->p_pid, (long)td->td_tid 47 #define LINUX_DTRACE linuxulator 48 49 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 50 #define LINUX_USRSTACK LINUX_SHAREDPAGE 51 52 #define PTRIN(v) (void *)(v) 53 #define PTROUT(v) (l_uintptr_t)(v) 54 55 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0) 56 #define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0) 57 #define PTRIN_CP(src,dst,fld) \ 58 do { (dst).fld = PTRIN((src).fld); } while (0) 59 60 /* 61 * Provide a separate set of types for the Linux types. 62 */ 63 typedef int l_int; 64 typedef int32_t l_long; 65 typedef int64_t l_longlong; 66 typedef short l_short; 67 typedef unsigned int l_uint; 68 typedef uint32_t l_ulong; 69 typedef uint64_t l_ulonglong; 70 typedef unsigned short l_ushort; 71 72 typedef char *l_caddr_t; 73 typedef l_ulong l_uintptr_t; 74 typedef l_long l_clock_t; 75 typedef l_int l_daddr_t; 76 typedef l_ushort l_dev_t; 77 typedef l_uint l_gid_t; 78 typedef l_ushort l_gid16_t; 79 typedef l_ulong l_ino_t; 80 typedef l_int l_key_t; 81 typedef l_longlong l_loff_t; 82 typedef l_ushort l_mode_t; 83 typedef l_long l_off_t; 84 typedef l_int l_pid_t; 85 typedef l_uint l_size_t; 86 typedef l_long l_suseconds_t; 87 typedef l_long l_time_t; 88 typedef l_uint l_uid_t; 89 typedef l_ushort l_uid16_t; 90 typedef l_int l_timer_t; 91 typedef l_int l_mqd_t; 92 93 typedef struct { 94 l_int val[2]; 95 } l_fsid_t; 96 97 typedef struct { 98 l_time_t tv_sec; 99 l_suseconds_t tv_usec; 100 } l_timeval; 101 102 #define l_fd_set fd_set 103 104 /* 105 * Miscellaneous 106 */ 107 #define LINUX_AT_COUNT 18 /* Count of used aux entry types. 108 * Keep this synchronized with 109 * elf_linux_fixup() code. 110 */ 111 struct l___sysctl_args 112 { 113 l_int *name; 114 l_int nlen; 115 void *oldval; 116 l_size_t *oldlenp; 117 void *newval; 118 l_size_t newlen; 119 l_ulong __spare[4]; 120 }; 121 122 /* Resource limits */ 123 #define LINUX_RLIMIT_CPU 0 124 #define LINUX_RLIMIT_FSIZE 1 125 #define LINUX_RLIMIT_DATA 2 126 #define LINUX_RLIMIT_STACK 3 127 #define LINUX_RLIMIT_CORE 4 128 #define LINUX_RLIMIT_RSS 5 129 #define LINUX_RLIMIT_NPROC 6 130 #define LINUX_RLIMIT_NOFILE 7 131 #define LINUX_RLIMIT_MEMLOCK 8 132 #define LINUX_RLIMIT_AS 9 /* Address space limit */ 133 134 #define LINUX_RLIM_NLIMITS 10 135 136 struct l_rlimit { 137 l_ulong rlim_cur; 138 l_ulong rlim_max; 139 }; 140 141 /* mmap options */ 142 #define LINUX_MAP_SHARED 0x0001 143 #define LINUX_MAP_PRIVATE 0x0002 144 #define LINUX_MAP_FIXED 0x0010 145 #define LINUX_MAP_ANON 0x0020 146 #define LINUX_MAP_GROWSDOWN 0x0100 147 148 struct l_mmap_argv { 149 l_uintptr_t addr; 150 l_size_t len; 151 l_int prot; 152 l_int flags; 153 l_int fd; 154 l_off_t pgoff; 155 } __packed; 156 157 /* 158 * stat family of syscalls 159 */ 160 struct l_timespec { 161 l_time_t tv_sec; 162 l_long tv_nsec; 163 }; 164 165 struct l_newstat { 166 l_ushort st_dev; 167 l_ushort __pad1; 168 l_ulong st_ino; 169 l_ushort st_mode; 170 l_ushort st_nlink; 171 l_ushort st_uid; 172 l_ushort st_gid; 173 l_ushort st_rdev; 174 l_ushort __pad2; 175 l_ulong st_size; 176 l_ulong st_blksize; 177 l_ulong st_blocks; 178 struct l_timespec st_atim; 179 struct l_timespec st_mtim; 180 struct l_timespec st_ctim; 181 l_ulong __unused4; 182 l_ulong __unused5; 183 }; 184 185 struct l_stat { 186 l_ushort st_dev; 187 l_ulong st_ino; 188 l_ushort st_mode; 189 l_ushort st_nlink; 190 l_ushort st_uid; 191 l_ushort st_gid; 192 l_ushort st_rdev; 193 l_long st_size; 194 struct l_timespec st_atim; 195 struct l_timespec st_mtim; 196 struct l_timespec st_ctim; 197 l_long st_blksize; 198 l_long st_blocks; 199 l_ulong st_flags; 200 l_ulong st_gen; 201 }; 202 203 struct l_stat64 { 204 l_ushort st_dev; 205 u_char __pad0[10]; 206 l_ulong __st_ino; 207 l_uint st_mode; 208 l_uint st_nlink; 209 l_ulong st_uid; 210 l_ulong st_gid; 211 l_ushort st_rdev; 212 u_char __pad3[10]; 213 l_longlong st_size; 214 l_ulong st_blksize; 215 l_ulong st_blocks; 216 l_ulong __pad4; 217 struct l_timespec st_atim; 218 struct l_timespec st_mtim; 219 struct l_timespec st_ctim; 220 l_ulonglong st_ino; 221 }; 222 223 struct l_statfs64 { 224 l_int f_type; 225 l_int f_bsize; 226 uint64_t f_blocks; 227 uint64_t f_bfree; 228 uint64_t f_bavail; 229 uint64_t f_files; 230 uint64_t f_ffree; 231 l_fsid_t f_fsid; 232 l_int f_namelen; 233 l_int f_spare[6]; 234 }; 235 236 /* 237 * Signalling 238 */ 239 #define LINUX_SIGHUP 1 240 #define LINUX_SIGINT 2 241 #define LINUX_SIGQUIT 3 242 #define LINUX_SIGILL 4 243 #define LINUX_SIGTRAP 5 244 #define LINUX_SIGABRT 6 245 #define LINUX_SIGIOT LINUX_SIGABRT 246 #define LINUX_SIGBUS 7 247 #define LINUX_SIGFPE 8 248 #define LINUX_SIGKILL 9 249 #define LINUX_SIGUSR1 10 250 #define LINUX_SIGSEGV 11 251 #define LINUX_SIGUSR2 12 252 #define LINUX_SIGPIPE 13 253 #define LINUX_SIGALRM 14 254 #define LINUX_SIGTERM 15 255 #define LINUX_SIGSTKFLT 16 256 #define LINUX_SIGCHLD 17 257 #define LINUX_SIGCONT 18 258 #define LINUX_SIGSTOP 19 259 #define LINUX_SIGTSTP 20 260 #define LINUX_SIGTTIN 21 261 #define LINUX_SIGTTOU 22 262 #define LINUX_SIGURG 23 263 #define LINUX_SIGXCPU 24 264 #define LINUX_SIGXFSZ 25 265 #define LINUX_SIGVTALRM 26 266 #define LINUX_SIGPROF 27 267 #define LINUX_SIGWINCH 28 268 #define LINUX_SIGIO 29 269 #define LINUX_SIGPOLL LINUX_SIGIO 270 #define LINUX_SIGPWR 30 271 #define LINUX_SIGSYS 31 272 #define LINUX_SIGRTMIN 32 273 274 #define LINUX_SIGTBLSZ 31 275 #define LINUX_NSIG_WORDS 2 276 #define LINUX_NBPW 32 277 #define LINUX_NSIG (LINUX_NBPW * LINUX_NSIG_WORDS) 278 279 /* sigaction flags */ 280 #define LINUX_SA_NOCLDSTOP 0x00000001 281 #define LINUX_SA_NOCLDWAIT 0x00000002 282 #define LINUX_SA_SIGINFO 0x00000004 283 #define LINUX_SA_RESTORER 0x04000000 284 #define LINUX_SA_ONSTACK 0x08000000 285 #define LINUX_SA_RESTART 0x10000000 286 #define LINUX_SA_INTERRUPT 0x20000000 287 #define LINUX_SA_NOMASK 0x40000000 288 #define LINUX_SA_ONESHOT 0x80000000 289 290 /* sigprocmask actions */ 291 #define LINUX_SIG_BLOCK 0 292 #define LINUX_SIG_UNBLOCK 1 293 #define LINUX_SIG_SETMASK 2 294 295 /* sigset_t macros */ 296 #define LINUX_SIGEMPTYSET(set) (set).__bits[0] = (set).__bits[1] = 0 297 #define LINUX_SIGISMEMBER(set, sig) SIGISMEMBER(set, sig) 298 #define LINUX_SIGADDSET(set, sig) SIGADDSET(set, sig) 299 300 /* sigaltstack */ 301 #define LINUX_MINSIGSTKSZ 2048 302 #define LINUX_SS_ONSTACK 1 303 #define LINUX_SS_DISABLE 2 304 305 int linux_to_bsd_sigaltstack(int lsa); 306 int bsd_to_linux_sigaltstack(int bsa); 307 308 typedef void (*l_handler_t)(l_int); 309 typedef l_ulong l_osigset_t; 310 311 typedef struct { 312 l_uint __bits[LINUX_NSIG_WORDS]; 313 } l_sigset_t; 314 315 typedef struct { 316 l_handler_t lsa_handler; 317 l_osigset_t lsa_mask; 318 l_ulong lsa_flags; 319 void (*lsa_restorer)(void); 320 } l_osigaction_t; 321 322 typedef struct { 323 l_handler_t lsa_handler; 324 l_ulong lsa_flags; 325 void (*lsa_restorer)(void); 326 l_sigset_t lsa_mask; 327 } l_sigaction_t; 328 329 typedef struct { 330 void *ss_sp; 331 l_int ss_flags; 332 l_size_t ss_size; 333 } l_stack_t; 334 335 /* The Linux sigcontext, pretty much a standard 386 trapframe. */ 336 struct l_sigcontext { 337 l_int sc_gs; 338 l_int sc_fs; 339 l_int sc_es; 340 l_int sc_ds; 341 l_int sc_edi; 342 l_int sc_esi; 343 l_int sc_ebp; 344 l_int sc_esp; 345 l_int sc_ebx; 346 l_int sc_edx; 347 l_int sc_ecx; 348 l_int sc_eax; 349 l_int sc_trapno; 350 l_int sc_err; 351 l_int sc_eip; 352 l_int sc_cs; 353 l_int sc_eflags; 354 l_int sc_esp_at_signal; 355 l_int sc_ss; 356 l_int sc_387; 357 l_int sc_mask; 358 l_int sc_cr2; 359 }; 360 361 struct l_ucontext { 362 l_ulong uc_flags; 363 void *uc_link; 364 l_stack_t uc_stack; 365 struct l_sigcontext uc_mcontext; 366 l_sigset_t uc_sigmask; 367 }; 368 369 #define LINUX_SI_MAX_SIZE 128 370 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 371 372 typedef union l_sigval { 373 l_int sival_int; 374 l_uintptr_t sival_ptr; 375 } l_sigval_t; 376 377 typedef struct l_siginfo { 378 l_int lsi_signo; 379 l_int lsi_errno; 380 l_int lsi_code; 381 union { 382 l_int _pad[LINUX_SI_PAD_SIZE]; 383 384 struct { 385 l_pid_t _pid; 386 l_uid_t _uid; 387 } _kill; 388 389 struct { 390 l_timer_t _tid; 391 l_int _overrun; 392 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 393 l_sigval_t _sigval; 394 l_int _sys_private; 395 } _timer; 396 397 struct { 398 l_pid_t _pid; /* sender's pid */ 399 l_uid_t _uid; /* sender's uid */ 400 l_sigval_t _sigval; 401 } _rt; 402 403 struct { 404 l_pid_t _pid; /* which child */ 405 l_uid_t _uid; /* sender's uid */ 406 l_int _status; /* exit code */ 407 l_clock_t _utime; 408 l_clock_t _stime; 409 } _sigchld; 410 411 struct { 412 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 413 } _sigfault; 414 415 struct { 416 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 417 l_int _fd; 418 } _sigpoll; 419 } _sifields; 420 } l_siginfo_t; 421 422 #define lsi_pid _sifields._kill._pid 423 #define lsi_uid _sifields._kill._uid 424 #define lsi_tid _sifields._timer._tid 425 #define lsi_overrun _sifields._timer._overrun 426 #define lsi_sys_private _sifields._timer._sys_private 427 #define lsi_status _sifields._sigchld._status 428 #define lsi_utime _sifields._sigchld._utime 429 #define lsi_stime _sifields._sigchld._stime 430 #define lsi_value _sifields._rt._sigval 431 #define lsi_int _sifields._rt._sigval.sival_int 432 #define lsi_ptr _sifields._rt._sigval.sival_ptr 433 #define lsi_addr _sifields._sigfault._addr 434 #define lsi_band _sifields._sigpoll._band 435 #define lsi_fd _sifields._sigpoll._fd 436 437 struct l_fpreg { 438 u_int16_t significand[4]; 439 u_int16_t exponent; 440 }; 441 442 struct l_fpxreg { 443 u_int16_t significand[4]; 444 u_int16_t exponent; 445 u_int16_t padding[3]; 446 }; 447 448 struct l_xmmreg { 449 u_int32_t element[4]; 450 }; 451 452 struct l_fpstate { 453 /* Regular FPU environment */ 454 u_int32_t cw; 455 u_int32_t sw; 456 u_int32_t tag; 457 u_int32_t ipoff; 458 u_int32_t cssel; 459 u_int32_t dataoff; 460 u_int32_t datasel; 461 struct l_fpreg _st[8]; 462 u_int16_t status; 463 u_int16_t magic; /* 0xffff = regular FPU data */ 464 465 /* FXSR FPU environment */ 466 u_int32_t _fxsr_env[6]; /* env is ignored. */ 467 u_int32_t mxcsr; 468 u_int32_t reserved; 469 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 470 struct l_xmmreg _xmm[8]; 471 u_int32_t padding[56]; 472 }; 473 474 /* 475 * We make the stack look like Linux expects it when calling a signal 476 * handler, but use the BSD way of calling the handler and sigreturn(). 477 * This means that we need to pass the pointer to the handler too. 478 * It is appended to the frame to not interfere with the rest of it. 479 */ 480 struct l_sigframe { 481 l_int sf_sig; 482 struct l_sigcontext sf_sc; 483 struct l_fpstate sf_fpstate; 484 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 485 l_handler_t sf_handler; 486 }; 487 488 struct l_rt_sigframe { 489 l_int sf_sig; 490 l_siginfo_t *sf_siginfo; 491 struct l_ucontext *sf_ucontext; 492 l_siginfo_t sf_si; 493 struct l_ucontext sf_sc; 494 l_handler_t sf_handler; 495 }; 496 497 extern struct sysentvec linux_sysvec; 498 499 /* 500 * open/fcntl flags 501 */ 502 #define LINUX_O_RDONLY 00000000 503 #define LINUX_O_WRONLY 00000001 504 #define LINUX_O_RDWR 00000002 505 #define LINUX_O_ACCMODE 00000003 506 #define LINUX_O_CREAT 00000100 507 #define LINUX_O_EXCL 00000200 508 #define LINUX_O_NOCTTY 00000400 509 #define LINUX_O_TRUNC 00001000 510 #define LINUX_O_APPEND 00002000 511 #define LINUX_O_NONBLOCK 00004000 512 #define LINUX_O_NDELAY LINUX_O_NONBLOCK 513 #define LINUX_O_SYNC 00010000 514 #define LINUX_FASYNC 00020000 515 #define LINUX_O_DIRECT 00040000 /* Direct disk access hint */ 516 #define LINUX_O_LARGEFILE 00100000 517 #define LINUX_O_DIRECTORY 00200000 /* Must be a directory */ 518 #define LINUX_O_NOFOLLOW 00400000 /* Do not follow links */ 519 #define LINUX_O_NOATIME 01000000 520 #define LINUX_O_CLOEXEC 02000000 521 522 #define LINUX_F_DUPFD 0 523 #define LINUX_F_GETFD 1 524 #define LINUX_F_SETFD 2 525 #define LINUX_F_GETFL 3 526 #define LINUX_F_SETFL 4 527 #define LINUX_F_GETLK 5 528 #define LINUX_F_SETLK 6 529 #define LINUX_F_SETLKW 7 530 #define LINUX_F_SETOWN 8 531 #define LINUX_F_GETOWN 9 532 533 #define LINUX_F_GETLK64 12 534 #define LINUX_F_SETLK64 13 535 #define LINUX_F_SETLKW64 14 536 537 #define LINUX_F_RDLCK 0 538 #define LINUX_F_WRLCK 1 539 #define LINUX_F_UNLCK 2 540 541 union l_semun { 542 l_int val; 543 struct l_semid_ds *buf; 544 l_ushort *array; 545 struct l_seminfo *__buf; 546 void *__pad; 547 }; 548 549 struct l_ipc_perm { 550 l_key_t key; 551 l_uid16_t uid; 552 l_gid16_t gid; 553 l_uid16_t cuid; 554 l_gid16_t cgid; 555 l_ushort mode; 556 l_ushort seq; 557 }; 558 559 /* 560 * Socket defines 561 */ 562 #define LINUX_SOL_SOCKET 1 563 #define LINUX_SOL_IP 0 564 #define LINUX_SOL_IPX 256 565 #define LINUX_SOL_AX25 257 566 #define LINUX_SOL_TCP 6 567 #define LINUX_SOL_UDP 17 568 569 #define LINUX_SO_DEBUG 1 570 #define LINUX_SO_REUSEADDR 2 571 #define LINUX_SO_TYPE 3 572 #define LINUX_SO_ERROR 4 573 #define LINUX_SO_DONTROUTE 5 574 #define LINUX_SO_BROADCAST 6 575 #define LINUX_SO_SNDBUF 7 576 #define LINUX_SO_RCVBUF 8 577 #define LINUX_SO_KEEPALIVE 9 578 #define LINUX_SO_OOBINLINE 10 579 #define LINUX_SO_NO_CHECK 11 580 #define LINUX_SO_PRIORITY 12 581 #define LINUX_SO_LINGER 13 582 #define LINUX_SO_PEERCRED 17 583 #define LINUX_SO_RCVLOWAT 18 584 #define LINUX_SO_SNDLOWAT 19 585 #define LINUX_SO_RCVTIMEO 20 586 #define LINUX_SO_SNDTIMEO 21 587 #define LINUX_SO_TIMESTAMP 29 588 #define LINUX_SO_ACCEPTCONN 30 589 590 struct l_sockaddr { 591 l_ushort sa_family; 592 char sa_data[14]; 593 }; 594 595 struct l_msghdr { 596 l_uintptr_t msg_name; 597 l_int msg_namelen; 598 l_uintptr_t msg_iov; 599 l_size_t msg_iovlen; 600 l_uintptr_t msg_control; 601 l_size_t msg_controllen; 602 l_uint msg_flags; 603 }; 604 605 struct l_cmsghdr { 606 l_size_t cmsg_len; 607 l_int cmsg_level; 608 l_int cmsg_type; 609 }; 610 611 struct l_ifmap { 612 l_ulong mem_start; 613 l_ulong mem_end; 614 l_ushort base_addr; 615 u_char irq; 616 u_char dma; 617 u_char port; 618 }; 619 620 #define LINUX_IFHWADDRLEN 6 621 #define LINUX_IFNAMSIZ 16 622 623 struct l_ifreq { 624 union { 625 char ifrn_name[LINUX_IFNAMSIZ]; 626 } ifr_ifrn; 627 628 union { 629 struct l_sockaddr ifru_addr; 630 struct l_sockaddr ifru_dstaddr; 631 struct l_sockaddr ifru_broadaddr; 632 struct l_sockaddr ifru_netmask; 633 struct l_sockaddr ifru_hwaddr; 634 l_short ifru_flags[1]; 635 l_int ifru_metric; 636 l_int ifru_mtu; 637 struct l_ifmap ifru_map; 638 char ifru_slave[LINUX_IFNAMSIZ]; 639 l_caddr_t ifru_data; 640 } ifr_ifru; 641 }; 642 643 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 644 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 645 646 /* 647 * poll() 648 */ 649 #define LINUX_POLLIN 0x0001 650 #define LINUX_POLLPRI 0x0002 651 #define LINUX_POLLOUT 0x0004 652 #define LINUX_POLLERR 0x0008 653 #define LINUX_POLLHUP 0x0010 654 #define LINUX_POLLNVAL 0x0020 655 #define LINUX_POLLRDNORM 0x0040 656 #define LINUX_POLLRDBAND 0x0080 657 #define LINUX_POLLWRNORM 0x0100 658 #define LINUX_POLLWRBAND 0x0200 659 #define LINUX_POLLMSG 0x0400 660 661 struct l_pollfd { 662 l_int fd; 663 l_short events; 664 l_short revents; 665 }; 666 667 struct l_user_desc { 668 l_uint entry_number; 669 l_uint base_addr; 670 l_uint limit; 671 l_uint seg_32bit:1; 672 l_uint contents:2; 673 l_uint read_exec_only:1; 674 l_uint limit_in_pages:1; 675 l_uint seg_not_present:1; 676 l_uint useable:1; 677 }; 678 679 struct l_desc_struct { 680 unsigned long a, b; 681 }; 682 683 684 #define LINUX_LOWERWORD 0x0000ffff 685 686 /* 687 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 688 * These convert Linux user space descriptor to machine one. 689 */ 690 #define LINUX_LDT_entry_a(info) \ 691 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 692 ((info)->limit & LINUX_LOWERWORD)) 693 694 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9 695 #define LINUX_ENTRY_B_CONTENTS 10 696 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 697 #define LINUX_ENTRY_B_BASE_ADDR 16 698 #define LINUX_ENTRY_B_USEABLE 20 699 #define LINUX_ENTRY_B_SEG32BIT 22 700 #define LINUX_ENTRY_B_LIMIT 23 701 702 #define LINUX_LDT_entry_b(info) \ 703 (((info)->base_addr & 0xff000000) | \ 704 ((info)->limit & 0xf0000) | \ 705 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 706 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 707 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 708 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 709 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 710 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 711 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 712 713 #define LINUX_LDT_empty(info) \ 714 ((info)->base_addr == 0 && \ 715 (info)->limit == 0 && \ 716 (info)->contents == 0 && \ 717 (info)->seg_not_present == 1 && \ 718 (info)->read_exec_only == 1 && \ 719 (info)->seg_32bit == 0 && \ 720 (info)->limit_in_pages == 0 && \ 721 (info)->useable == 0) 722 723 /* 724 * Macros for converting segments. 725 * They do the same as those in arch/i386/kernel/process.c in Linux. 726 */ 727 #define LINUX_GET_BASE(desc) \ 728 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 729 (((desc)->b << 16) & 0x00ff0000) | \ 730 ((desc)->b & 0xff000000)) 731 732 #define LINUX_GET_LIMIT(desc) \ 733 (((desc)->a & LINUX_LOWERWORD) | \ 734 ((desc)->b & 0xf0000)) 735 736 #define LINUX_GET_32BIT(desc) \ 737 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 738 #define LINUX_GET_CONTENTS(desc) \ 739 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 740 #define LINUX_GET_WRITABLE(desc) \ 741 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 742 #define LINUX_GET_LIMIT_PAGES(desc) \ 743 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 744 #define LINUX_GET_PRESENT(desc) \ 745 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 746 #define LINUX_GET_USEABLE(desc) \ 747 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 748 749 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r)) 750 751 /* robust futexes */ 752 struct linux_robust_list { 753 struct linux_robust_list *next; 754 }; 755 756 struct linux_robust_list_head { 757 struct linux_robust_list list; 758 l_long futex_offset; 759 struct linux_robust_list *pending_list; 760 }; 761 762 #endif /* !_I386_LINUX_H_ */ 763