Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux.h
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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: releng/10.2/sys/i386/linux/linux.h 272020 2014-09-23 07:50:04Z bz $ 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): "#nm"("fmt")\n", (long)td->td_proc->p_pid 44 #define LMSG(fmt) "linux(%ld): "fmt"\n", (long)td->td_proc->p_pid 45 #define LINUX_DTRACE linuxulator 46 47 #ifdef MALLOC_DECLARE 48 MALLOC_DECLARE(M_LINUX); 49 #endif 50 51 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 52 #define LINUX_USRSTACK LINUX_SHAREDPAGE 53 54 #define PTRIN(v) (void *)(v) 55 #define PTROUT(v) (l_uintptr_t)(v) 56 57 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0) 58 #define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0) 59 #define PTRIN_CP(src,dst,fld) \ 60 do { (dst).fld = PTRIN((src).fld); } while (0) 61 62 /* 63 * Provide a separate set of types for the Linux types. 64 */ 65 typedef int l_int; 66 typedef int32_t l_long; 67 typedef int64_t l_longlong; 68 typedef short l_short; 69 typedef unsigned int l_uint; 70 typedef uint32_t l_ulong; 71 typedef uint64_t l_ulonglong; 72 typedef unsigned short l_ushort; 73 74 typedef char *l_caddr_t; 75 typedef l_ulong l_uintptr_t; 76 typedef l_long l_clock_t; 77 typedef l_int l_daddr_t; 78 typedef l_ushort l_dev_t; 79 typedef l_uint l_gid_t; 80 typedef l_ushort l_gid16_t; 81 typedef l_ulong l_ino_t; 82 typedef l_int l_key_t; 83 typedef l_longlong l_loff_t; 84 typedef l_ushort l_mode_t; 85 typedef l_long l_off_t; 86 typedef l_int l_pid_t; 87 typedef l_uint l_size_t; 88 typedef l_long l_suseconds_t; 89 typedef l_long l_time_t; 90 typedef l_uint l_uid_t; 91 typedef l_ushort l_uid16_t; 92 typedef l_int l_timer_t; 93 typedef l_int l_mqd_t; 94 95 typedef struct { 96 l_int val[2]; 97 } l_fsid_t; 98 99 typedef struct { 100 l_time_t tv_sec; 101 l_suseconds_t tv_usec; 102 } l_timeval; 103 104 #define l_fd_set fd_set 105 106 /* 107 * Miscellaneous 108 */ 109 #define LINUX_AT_COUNT 16 /* Count of used aux entry types. 110 * Keep this synchronized with 111 * elf_linux_fixup() code. 112 */ 113 struct l___sysctl_args 114 { 115 l_int *name; 116 l_int nlen; 117 void *oldval; 118 l_size_t *oldlenp; 119 void *newval; 120 l_size_t newlen; 121 l_ulong __spare[4]; 122 }; 123 124 /* Resource limits */ 125 #define LINUX_RLIMIT_CPU 0 126 #define LINUX_RLIMIT_FSIZE 1 127 #define LINUX_RLIMIT_DATA 2 128 #define LINUX_RLIMIT_STACK 3 129 #define LINUX_RLIMIT_CORE 4 130 #define LINUX_RLIMIT_RSS 5 131 #define LINUX_RLIMIT_NPROC 6 132 #define LINUX_RLIMIT_NOFILE 7 133 #define LINUX_RLIMIT_MEMLOCK 8 134 #define LINUX_RLIMIT_AS 9 /* Address space limit */ 135 136 #define LINUX_RLIM_NLIMITS 10 137 138 struct l_rlimit { 139 l_ulong rlim_cur; 140 l_ulong rlim_max; 141 }; 142 143 /* mmap options */ 144 #define LINUX_MAP_SHARED 0x0001 145 #define LINUX_MAP_PRIVATE 0x0002 146 #define LINUX_MAP_FIXED 0x0010 147 #define LINUX_MAP_ANON 0x0020 148 #define LINUX_MAP_GROWSDOWN 0x0100 149 150 struct l_mmap_argv { 151 l_uintptr_t addr; 152 l_size_t len; 153 l_int prot; 154 l_int flags; 155 l_int fd; 156 l_off_t pgoff; 157 } __packed; 158 159 /* 160 * stat family of syscalls 161 */ 162 struct l_timespec { 163 l_time_t tv_sec; 164 l_long tv_nsec; 165 }; 166 167 struct l_newstat { 168 l_ushort st_dev; 169 l_ushort __pad1; 170 l_ulong st_ino; 171 l_ushort st_mode; 172 l_ushort st_nlink; 173 l_ushort st_uid; 174 l_ushort st_gid; 175 l_ushort st_rdev; 176 l_ushort __pad2; 177 l_ulong st_size; 178 l_ulong st_blksize; 179 l_ulong st_blocks; 180 struct l_timespec st_atim; 181 struct l_timespec st_mtim; 182 struct l_timespec st_ctim; 183 l_ulong __unused4; 184 l_ulong __unused5; 185 }; 186 187 struct l_stat { 188 l_ushort st_dev; 189 l_ulong st_ino; 190 l_ushort st_mode; 191 l_ushort st_nlink; 192 l_ushort st_uid; 193 l_ushort st_gid; 194 l_ushort st_rdev; 195 l_long st_size; 196 struct l_timespec st_atim; 197 struct l_timespec st_mtim; 198 struct l_timespec st_ctim; 199 l_long st_blksize; 200 l_long st_blocks; 201 l_ulong st_flags; 202 l_ulong st_gen; 203 }; 204 205 struct l_stat64 { 206 l_ushort st_dev; 207 u_char __pad0[10]; 208 l_ulong __st_ino; 209 l_uint st_mode; 210 l_uint st_nlink; 211 l_ulong st_uid; 212 l_ulong st_gid; 213 l_ushort st_rdev; 214 u_char __pad3[10]; 215 l_longlong st_size; 216 l_ulong st_blksize; 217 l_ulong st_blocks; 218 l_ulong __pad4; 219 struct l_timespec st_atim; 220 struct l_timespec st_mtim; 221 struct l_timespec st_ctim; 222 l_ulonglong st_ino; 223 }; 224 225 struct l_statfs64 { 226 l_int f_type; 227 l_int f_bsize; 228 uint64_t f_blocks; 229 uint64_t f_bfree; 230 uint64_t f_bavail; 231 uint64_t f_files; 232 uint64_t f_ffree; 233 l_fsid_t f_fsid; 234 l_int f_namelen; 235 l_int f_spare[6]; 236 }; 237 238 /* 239 * Signalling 240 */ 241 #define LINUX_SIGHUP 1 242 #define LINUX_SIGINT 2 243 #define LINUX_SIGQUIT 3 244 #define LINUX_SIGILL 4 245 #define LINUX_SIGTRAP 5 246 #define LINUX_SIGABRT 6 247 #define LINUX_SIGIOT LINUX_SIGABRT 248 #define LINUX_SIGBUS 7 249 #define LINUX_SIGFPE 8 250 #define LINUX_SIGKILL 9 251 #define LINUX_SIGUSR1 10 252 #define LINUX_SIGSEGV 11 253 #define LINUX_SIGUSR2 12 254 #define LINUX_SIGPIPE 13 255 #define LINUX_SIGALRM 14 256 #define LINUX_SIGTERM 15 257 #define LINUX_SIGSTKFLT 16 258 #define LINUX_SIGCHLD 17 259 #define LINUX_SIGCONT 18 260 #define LINUX_SIGSTOP 19 261 #define LINUX_SIGTSTP 20 262 #define LINUX_SIGTTIN 21 263 #define LINUX_SIGTTOU 22 264 #define LINUX_SIGURG 23 265 #define LINUX_SIGXCPU 24 266 #define LINUX_SIGXFSZ 25 267 #define LINUX_SIGVTALRM 26 268 #define LINUX_SIGPROF 27 269 #define LINUX_SIGWINCH 28 270 #define LINUX_SIGIO 29 271 #define LINUX_SIGPOLL LINUX_SIGIO 272 #define LINUX_SIGPWR 30 273 #define LINUX_SIGSYS 31 274 #define LINUX_SIGRTMIN 32 275 276 #define LINUX_SIGTBLSZ 31 277 #define LINUX_NSIG_WORDS 2 278 #define LINUX_NBPW 32 279 #define LINUX_NSIG (LINUX_NBPW * LINUX_NSIG_WORDS) 280 281 /* sigaction flags */ 282 #define LINUX_SA_NOCLDSTOP 0x00000001 283 #define LINUX_SA_NOCLDWAIT 0x00000002 284 #define LINUX_SA_SIGINFO 0x00000004 285 #define LINUX_SA_RESTORER 0x04000000 286 #define LINUX_SA_ONSTACK 0x08000000 287 #define LINUX_SA_RESTART 0x10000000 288 #define LINUX_SA_INTERRUPT 0x20000000 289 #define LINUX_SA_NOMASK 0x40000000 290 #define LINUX_SA_ONESHOT 0x80000000 291 292 /* sigprocmask actions */ 293 #define LINUX_SIG_BLOCK 0 294 #define LINUX_SIG_UNBLOCK 1 295 #define LINUX_SIG_SETMASK 2 296 297 /* sigset_t macros */ 298 #define LINUX_SIGEMPTYSET(set) (set).__bits[0] = (set).__bits[1] = 0 299 #define LINUX_SIGISMEMBER(set, sig) SIGISMEMBER(set, sig) 300 #define LINUX_SIGADDSET(set, sig) SIGADDSET(set, sig) 301 302 /* sigaltstack */ 303 #define LINUX_MINSIGSTKSZ 2048 304 #define LINUX_SS_ONSTACK 1 305 #define LINUX_SS_DISABLE 2 306 307 int linux_to_bsd_sigaltstack(int lsa); 308 int bsd_to_linux_sigaltstack(int bsa); 309 310 typedef void (*l_handler_t)(l_int); 311 typedef l_ulong l_osigset_t; 312 313 typedef struct { 314 l_uint __bits[LINUX_NSIG_WORDS]; 315 } l_sigset_t; 316 317 typedef struct { 318 l_handler_t lsa_handler; 319 l_osigset_t lsa_mask; 320 l_ulong lsa_flags; 321 void (*lsa_restorer)(void); 322 } l_osigaction_t; 323 324 typedef struct { 325 l_handler_t lsa_handler; 326 l_ulong lsa_flags; 327 void (*lsa_restorer)(void); 328 l_sigset_t lsa_mask; 329 } l_sigaction_t; 330 331 typedef struct { 332 void *ss_sp; 333 l_int ss_flags; 334 l_size_t ss_size; 335 } l_stack_t; 336 337 /* The Linux sigcontext, pretty much a standard 386 trapframe. */ 338 struct l_sigcontext { 339 l_int sc_gs; 340 l_int sc_fs; 341 l_int sc_es; 342 l_int sc_ds; 343 l_int sc_edi; 344 l_int sc_esi; 345 l_int sc_ebp; 346 l_int sc_esp; 347 l_int sc_ebx; 348 l_int sc_edx; 349 l_int sc_ecx; 350 l_int sc_eax; 351 l_int sc_trapno; 352 l_int sc_err; 353 l_int sc_eip; 354 l_int sc_cs; 355 l_int sc_eflags; 356 l_int sc_esp_at_signal; 357 l_int sc_ss; 358 l_int sc_387; 359 l_int sc_mask; 360 l_int sc_cr2; 361 }; 362 363 struct l_ucontext { 364 l_ulong uc_flags; 365 void *uc_link; 366 l_stack_t uc_stack; 367 struct l_sigcontext uc_mcontext; 368 l_sigset_t uc_sigmask; 369 }; 370 371 #define LINUX_SI_MAX_SIZE 128 372 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 373 374 typedef union l_sigval { 375 l_int sival_int; 376 l_uintptr_t sival_ptr; 377 } l_sigval_t; 378 379 typedef struct l_siginfo { 380 l_int lsi_signo; 381 l_int lsi_errno; 382 l_int lsi_code; 383 union { 384 l_int _pad[LINUX_SI_PAD_SIZE]; 385 386 struct { 387 l_pid_t _pid; 388 l_uid_t _uid; 389 } _kill; 390 391 struct { 392 l_timer_t _tid; 393 l_int _overrun; 394 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 395 l_sigval_t _sigval; 396 l_int _sys_private; 397 } _timer; 398 399 struct { 400 l_pid_t _pid; /* sender's pid */ 401 l_uid_t _uid; /* sender's uid */ 402 l_sigval_t _sigval; 403 } _rt; 404 405 struct { 406 l_pid_t _pid; /* which child */ 407 l_uid_t _uid; /* sender's uid */ 408 l_int _status; /* exit code */ 409 l_clock_t _utime; 410 l_clock_t _stime; 411 } _sigchld; 412 413 struct { 414 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 415 } _sigfault; 416 417 struct { 418 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 419 l_int _fd; 420 } _sigpoll; 421 } _sifields; 422 } l_siginfo_t; 423 424 #define lsi_pid _sifields._kill._pid 425 #define lsi_uid _sifields._kill._uid 426 #define lsi_tid _sifields._timer._tid 427 #define lsi_overrun _sifields._timer._overrun 428 #define lsi_sys_private _sifields._timer._sys_private 429 #define lsi_status _sifields._sigchld._status 430 #define lsi_utime _sifields._sigchld._utime 431 #define lsi_stime _sifields._sigchld._stime 432 #define lsi_value _sifields._rt._sigval 433 #define lsi_int _sifields._rt._sigval.sival_int 434 #define lsi_ptr _sifields._rt._sigval.sival_ptr 435 #define lsi_addr _sifields._sigfault._addr 436 #define lsi_band _sifields._sigpoll._band 437 #define lsi_fd _sifields._sigpoll._fd 438 439 struct l_fpreg { 440 u_int16_t significand[4]; 441 u_int16_t exponent; 442 }; 443 444 struct l_fpxreg { 445 u_int16_t significand[4]; 446 u_int16_t exponent; 447 u_int16_t padding[3]; 448 }; 449 450 struct l_xmmreg { 451 u_int32_t element[4]; 452 }; 453 454 struct l_fpstate { 455 /* Regular FPU environment */ 456 u_int32_t cw; 457 u_int32_t sw; 458 u_int32_t tag; 459 u_int32_t ipoff; 460 u_int32_t cssel; 461 u_int32_t dataoff; 462 u_int32_t datasel; 463 struct l_fpreg _st[8]; 464 u_int16_t status; 465 u_int16_t magic; /* 0xffff = regular FPU data */ 466 467 /* FXSR FPU environment */ 468 u_int32_t _fxsr_env[6]; /* env is ignored. */ 469 u_int32_t mxcsr; 470 u_int32_t reserved; 471 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 472 struct l_xmmreg _xmm[8]; 473 u_int32_t padding[56]; 474 }; 475 476 /* 477 * We make the stack look like Linux expects it when calling a signal 478 * handler, but use the BSD way of calling the handler and sigreturn(). 479 * This means that we need to pass the pointer to the handler too. 480 * It is appended to the frame to not interfere with the rest of it. 481 */ 482 struct l_sigframe { 483 l_int sf_sig; 484 struct l_sigcontext sf_sc; 485 struct l_fpstate sf_fpstate; 486 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 487 l_handler_t sf_handler; 488 }; 489 490 struct l_rt_sigframe { 491 l_int sf_sig; 492 l_siginfo_t *sf_siginfo; 493 struct l_ucontext *sf_ucontext; 494 l_siginfo_t sf_si; 495 struct l_ucontext sf_sc; 496 l_handler_t sf_handler; 497 }; 498 499 extern struct sysentvec linux_sysvec; 500 extern struct sysentvec elf_linux_sysvec; 501 502 /* 503 * open/fcntl flags 504 */ 505 #define LINUX_O_RDONLY 00000000 506 #define LINUX_O_WRONLY 00000001 507 #define LINUX_O_RDWR 00000002 508 #define LINUX_O_ACCMODE 00000003 509 #define LINUX_O_CREAT 00000100 510 #define LINUX_O_EXCL 00000200 511 #define LINUX_O_NOCTTY 00000400 512 #define LINUX_O_TRUNC 00001000 513 #define LINUX_O_APPEND 00002000 514 #define LINUX_O_NONBLOCK 00004000 515 #define LINUX_O_NDELAY LINUX_O_NONBLOCK 516 #define LINUX_O_SYNC 00010000 517 #define LINUX_FASYNC 00020000 518 #define LINUX_O_DIRECT 00040000 /* Direct disk access hint */ 519 #define LINUX_O_LARGEFILE 00100000 520 #define LINUX_O_DIRECTORY 00200000 /* Must be a directory */ 521 #define LINUX_O_NOFOLLOW 00400000 /* Do not follow links */ 522 #define LINUX_O_NOATIME 01000000 523 #define LINUX_O_CLOEXEC 02000000 524 525 #define LINUX_F_DUPFD 0 526 #define LINUX_F_GETFD 1 527 #define LINUX_F_SETFD 2 528 #define LINUX_F_GETFL 3 529 #define LINUX_F_SETFL 4 530 #define LINUX_F_GETLK 5 531 #define LINUX_F_SETLK 6 532 #define LINUX_F_SETLKW 7 533 #define LINUX_F_SETOWN 8 534 #define LINUX_F_GETOWN 9 535 536 #define LINUX_F_GETLK64 12 537 #define LINUX_F_SETLK64 13 538 #define LINUX_F_SETLKW64 14 539 540 #define LINUX_F_RDLCK 0 541 #define LINUX_F_WRLCK 1 542 #define LINUX_F_UNLCK 2 543 544 union l_semun { 545 l_int val; 546 struct l_semid_ds *buf; 547 l_ushort *array; 548 struct l_seminfo *__buf; 549 void *__pad; 550 }; 551 552 /* 553 * Socket defines 554 */ 555 #define LINUX_SOL_SOCKET 1 556 #define LINUX_SOL_IP 0 557 #define LINUX_SOL_IPX 256 558 #define LINUX_SOL_AX25 257 559 #define LINUX_SOL_TCP 6 560 #define LINUX_SOL_UDP 17 561 562 #define LINUX_SO_DEBUG 1 563 #define LINUX_SO_REUSEADDR 2 564 #define LINUX_SO_TYPE 3 565 #define LINUX_SO_ERROR 4 566 #define LINUX_SO_DONTROUTE 5 567 #define LINUX_SO_BROADCAST 6 568 #define LINUX_SO_SNDBUF 7 569 #define LINUX_SO_RCVBUF 8 570 #define LINUX_SO_KEEPALIVE 9 571 #define LINUX_SO_OOBINLINE 10 572 #define LINUX_SO_NO_CHECK 11 573 #define LINUX_SO_PRIORITY 12 574 #define LINUX_SO_LINGER 13 575 #define LINUX_SO_PEERCRED 17 576 #define LINUX_SO_RCVLOWAT 18 577 #define LINUX_SO_SNDLOWAT 19 578 #define LINUX_SO_RCVTIMEO 20 579 #define LINUX_SO_SNDTIMEO 21 580 #define LINUX_SO_TIMESTAMP 29 581 #define LINUX_SO_ACCEPTCONN 30 582 583 struct l_sockaddr { 584 l_ushort sa_family; 585 char sa_data[14]; 586 }; 587 588 struct l_msghdr { 589 l_uintptr_t msg_name; 590 l_int msg_namelen; 591 l_uintptr_t msg_iov; 592 l_size_t msg_iovlen; 593 l_uintptr_t msg_control; 594 l_size_t msg_controllen; 595 l_uint msg_flags; 596 }; 597 598 struct l_cmsghdr { 599 l_size_t cmsg_len; 600 l_int cmsg_level; 601 l_int cmsg_type; 602 }; 603 604 struct l_ifmap { 605 l_ulong mem_start; 606 l_ulong mem_end; 607 l_ushort base_addr; 608 u_char irq; 609 u_char dma; 610 u_char port; 611 }; 612 613 #define LINUX_IFHWADDRLEN 6 614 #define LINUX_IFNAMSIZ 16 615 616 struct l_ifreq { 617 union { 618 char ifrn_name[LINUX_IFNAMSIZ]; 619 } ifr_ifrn; 620 621 union { 622 struct l_sockaddr ifru_addr; 623 struct l_sockaddr ifru_dstaddr; 624 struct l_sockaddr ifru_broadaddr; 625 struct l_sockaddr ifru_netmask; 626 struct l_sockaddr ifru_hwaddr; 627 l_short ifru_flags[1]; 628 l_int ifru_metric; 629 l_int ifru_mtu; 630 struct l_ifmap ifru_map; 631 char ifru_slave[LINUX_IFNAMSIZ]; 632 l_caddr_t ifru_data; 633 } ifr_ifru; 634 }; 635 636 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 637 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 638 639 /* 640 * poll() 641 */ 642 #define LINUX_POLLIN 0x0001 643 #define LINUX_POLLPRI 0x0002 644 #define LINUX_POLLOUT 0x0004 645 #define LINUX_POLLERR 0x0008 646 #define LINUX_POLLHUP 0x0010 647 #define LINUX_POLLNVAL 0x0020 648 #define LINUX_POLLRDNORM 0x0040 649 #define LINUX_POLLRDBAND 0x0080 650 #define LINUX_POLLWRNORM 0x0100 651 #define LINUX_POLLWRBAND 0x0200 652 #define LINUX_POLLMSG 0x0400 653 654 struct l_pollfd { 655 l_int fd; 656 l_short events; 657 l_short revents; 658 }; 659 660 struct l_user_desc { 661 l_uint entry_number; 662 l_uint base_addr; 663 l_uint limit; 664 l_uint seg_32bit:1; 665 l_uint contents:2; 666 l_uint read_exec_only:1; 667 l_uint limit_in_pages:1; 668 l_uint seg_not_present:1; 669 l_uint useable:1; 670 }; 671 672 struct l_desc_struct { 673 unsigned long a, b; 674 }; 675 676 677 #define LINUX_LOWERWORD 0x0000ffff 678 679 /* 680 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 681 * These convert Linux user space descriptor to machine one. 682 */ 683 #define LINUX_LDT_entry_a(info) \ 684 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 685 ((info)->limit & LINUX_LOWERWORD)) 686 687 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9 688 #define LINUX_ENTRY_B_CONTENTS 10 689 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 690 #define LINUX_ENTRY_B_BASE_ADDR 16 691 #define LINUX_ENTRY_B_USEABLE 20 692 #define LINUX_ENTRY_B_SEG32BIT 22 693 #define LINUX_ENTRY_B_LIMIT 23 694 695 #define LINUX_LDT_entry_b(info) \ 696 (((info)->base_addr & 0xff000000) | \ 697 ((info)->limit & 0xf0000) | \ 698 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 699 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 700 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 701 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 702 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 703 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 704 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 705 706 #define LINUX_LDT_empty(info) \ 707 ((info)->base_addr == 0 && \ 708 (info)->limit == 0 && \ 709 (info)->contents == 0 && \ 710 (info)->seg_not_present == 1 && \ 711 (info)->read_exec_only == 1 && \ 712 (info)->seg_32bit == 0 && \ 713 (info)->limit_in_pages == 0 && \ 714 (info)->useable == 0) 715 716 /* 717 * Macros for converting segments. 718 * They do the same as those in arch/i386/kernel/process.c in Linux. 719 */ 720 #define LINUX_GET_BASE(desc) \ 721 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 722 (((desc)->b << 16) & 0x00ff0000) | \ 723 ((desc)->b & 0xff000000)) 724 725 #define LINUX_GET_LIMIT(desc) \ 726 (((desc)->a & LINUX_LOWERWORD) | \ 727 ((desc)->b & 0xf0000)) 728 729 #define LINUX_GET_32BIT(desc) \ 730 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 731 #define LINUX_GET_CONTENTS(desc) \ 732 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 733 #define LINUX_GET_WRITABLE(desc) \ 734 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 735 #define LINUX_GET_LIMIT_PAGES(desc) \ 736 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 737 #define LINUX_GET_PRESENT(desc) \ 738 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 739 #define LINUX_GET_USEABLE(desc) \ 740 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 741 742 /* robust futexes */ 743 struct linux_robust_list { 744 struct linux_robust_list *next; 745 }; 746 747 struct linux_robust_list_head { 748 struct linux_robust_list list; 749 l_long futex_offset; 750 struct linux_robust_list *pending_list; 751 }; 752 753 #endif /* !_I386_LINUX_H_ */
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