linux.h revision 302964
1191147Srwatson/*- 2191147Srwatson * Copyright (c) 1994-1996 S��ren Schmidt 3191147Srwatson * All rights reserved. 4191147Srwatson * 5191147Srwatson * Redistribution and use in source and binary forms, with or without 6191147Srwatson * modification, are permitted provided that the following conditions 7191147Srwatson * are met: 8191147Srwatson * 1. Redistributions of source code must retain the above copyright 9191147Srwatson * notice, this list of conditions and the following disclaimer 10191147Srwatson * in this position and unchanged. 11191147Srwatson * 2. Redistributions in binary form must reproduce the above copyright 12191147Srwatson * notice, this list of conditions and the following disclaimer in the 13191147Srwatson * documentation and/or other materials provided with the distribution. 14191147Srwatson * 3. The name of the author may not be used to endorse or promote products 15191147Srwatson * derived from this software without specific prior written permission 16191147Srwatson * 17191147Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18191147Srwatson * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19191147Srwatson * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20191147Srwatson * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21191147Srwatson * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22191147Srwatson * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23191147Srwatson * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24191147Srwatson * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25191147Srwatson * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26191147Srwatson * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27191147Srwatson * 28191147Srwatson * $FreeBSD: stable/10/sys/i386/linux/linux.h 302964 2016-07-17 15:23:32Z dchagin $ 29191147Srwatson */ 30191147Srwatson 31191147Srwatson#ifndef _I386_LINUX_H_ 32191147Srwatson#define _I386_LINUX_H_ 33191147Srwatson 34191147Srwatson#include <sys/signal.h> /* for sigval union */ 35191147Srwatson 36191147Srwatson#include <compat/linux/linux.h> 37191147Srwatson#include <i386/linux/linux_syscall.h> 38191147Srwatson 39191147Srwatson/* 40191147Srwatson * debugging support 41191147Srwatson */ 42191147Srwatsonextern u_char linux_debug_map[]; 43191147Srwatson#define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name) 44191147Srwatson#define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \ 45191147Srwatson (long)td->td_proc->p_pid, (long)td->td_tid 46191147Srwatson#define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \ 47191147Srwatson (long)td->td_proc->p_pid, (long)td->td_tid 48191147Srwatson#define LINUX_DTRACE linuxulator 49191147Srwatson 50191147Srwatson#define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 51191147Srwatson#define LINUX_USRSTACK LINUX_SHAREDPAGE 52191147Srwatson 53191147Srwatson#define PTRIN(v) (void *)(v) 54191147Srwatson#define PTROUT(v) (l_uintptr_t)(v) 55191147Srwatson 56191147Srwatson#define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0) 57191147Srwatson#define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0) 58191147Srwatson#define PTRIN_CP(src,dst,fld) \ 59191147Srwatson do { (dst).fld = PTRIN((src).fld); } while (0) 60191147Srwatson 61191147Srwatson/* 62191147Srwatson * Provide a separate set of types for the Linux types. 63191147Srwatson */ 64191147Srwatsontypedef int l_int; 65191147Srwatsontypedef int32_t l_long; 66191147Srwatsontypedef int64_t l_longlong; 67191147Srwatsontypedef short l_short; 68191147Srwatsontypedef unsigned int l_uint; 69191147Srwatsontypedef uint32_t l_ulong; 70191147Srwatsontypedef uint64_t l_ulonglong; 71191147Srwatsontypedef unsigned short l_ushort; 72191147Srwatson 73191147Srwatsontypedef char *l_caddr_t; 74191147Srwatsontypedef l_ulong l_uintptr_t; 75191147Srwatsontypedef l_long l_clock_t; 76191147Srwatsontypedef l_int l_daddr_t; 77191147Srwatsontypedef l_ushort l_dev_t; 78191147Srwatsontypedef l_uint l_gid_t; 79191147Srwatsontypedef l_ushort l_gid16_t; 80191147Srwatsontypedef l_ulong l_ino_t; 81191147Srwatsontypedef l_int l_key_t; 82191147Srwatsontypedef l_longlong l_loff_t; 83191147Srwatsontypedef l_ushort l_mode_t; 84191147Srwatsontypedef l_long l_off_t; 85191147Srwatsontypedef l_int l_pid_t; 86191147Srwatsontypedef l_uint l_size_t; 87191147Srwatsontypedef l_long l_suseconds_t; 88191147Srwatsontypedef l_long l_time_t; 89191147Srwatsontypedef l_uint l_uid_t; 90191147Srwatsontypedef l_ushort l_uid16_t; 91191147Srwatsontypedef l_int l_timer_t; 92191147Srwatsontypedef l_int l_mqd_t; 93191147Srwatsontypedef l_ulong l_fd_mask; 94191147Srwatson 95191147Srwatsontypedef struct { 96191147Srwatson l_int val[2]; 97191147Srwatson} l_fsid_t; 98191147Srwatson 99191147Srwatsontypedef struct { 100191147Srwatson l_time_t tv_sec; 101191147Srwatson l_suseconds_t tv_usec; 102191147Srwatson} l_timeval; 103191147Srwatson 104191147Srwatson#define l_fd_set fd_set 105191147Srwatson 106191147Srwatson/* 107191147Srwatson * Miscellaneous 108191147Srwatson */ 109191147Srwatson#define LINUX_AT_COUNT 20 /* Count of used aux entry types. 110191147Srwatson * Keep this synchronized with 111191147Srwatson * elf_linux_fixup() code. 112191147Srwatson */ 113191147Srwatsonstruct l___sysctl_args 114191147Srwatson{ 115191147Srwatson l_int *name; 116191147Srwatson l_int nlen; 117191147Srwatson void *oldval; 118191147Srwatson l_size_t *oldlenp; 119191147Srwatson void *newval; 120191147Srwatson l_size_t newlen; 121191147Srwatson l_ulong __spare[4]; 122191147Srwatson}; 123191147Srwatson 124191147Srwatson/* Resource limits */ 125191147Srwatson#define LINUX_RLIMIT_CPU 0 126191147Srwatson#define LINUX_RLIMIT_FSIZE 1 127191147Srwatson#define LINUX_RLIMIT_DATA 2 128191147Srwatson#define LINUX_RLIMIT_STACK 3 129191147Srwatson#define LINUX_RLIMIT_CORE 4 130191147Srwatson#define LINUX_RLIMIT_RSS 5 131191147Srwatson#define LINUX_RLIMIT_NPROC 6 132191147Srwatson#define LINUX_RLIMIT_NOFILE 7 133191147Srwatson#define LINUX_RLIMIT_MEMLOCK 8 134191147Srwatson#define LINUX_RLIMIT_AS 9 /* Address space limit */ 135191147Srwatson 136191147Srwatson#define LINUX_RLIM_NLIMITS 10 137191147Srwatson 138191147Srwatsonstruct l_rlimit { 139191147Srwatson l_ulong rlim_cur; 140191147Srwatson l_ulong rlim_max; 141191147Srwatson}; 142 143struct l_mmap_argv { 144 l_uintptr_t addr; 145 l_size_t len; 146 l_int prot; 147 l_int flags; 148 l_int fd; 149 l_off_t pgoff; 150} __packed; 151 152/* 153 * stat family of syscalls 154 */ 155struct l_timespec { 156 l_time_t tv_sec; 157 l_long tv_nsec; 158}; 159 160struct l_newstat { 161 l_ushort st_dev; 162 l_ushort __pad1; 163 l_ulong st_ino; 164 l_ushort st_mode; 165 l_ushort st_nlink; 166 l_ushort st_uid; 167 l_ushort st_gid; 168 l_ushort st_rdev; 169 l_ushort __pad2; 170 l_ulong st_size; 171 l_ulong st_blksize; 172 l_ulong st_blocks; 173 struct l_timespec st_atim; 174 struct l_timespec st_mtim; 175 struct l_timespec st_ctim; 176 l_ulong __unused4; 177 l_ulong __unused5; 178}; 179 180struct l_stat { 181 l_ushort st_dev; 182 l_ulong st_ino; 183 l_ushort st_mode; 184 l_ushort st_nlink; 185 l_ushort st_uid; 186 l_ushort st_gid; 187 l_ushort st_rdev; 188 l_long st_size; 189 struct l_timespec st_atim; 190 struct l_timespec st_mtim; 191 struct l_timespec st_ctim; 192 l_long st_blksize; 193 l_long st_blocks; 194 l_ulong st_flags; 195 l_ulong st_gen; 196}; 197 198struct l_stat64 { 199 l_ushort st_dev; 200 u_char __pad0[10]; 201 l_ulong __st_ino; 202 l_uint st_mode; 203 l_uint st_nlink; 204 l_ulong st_uid; 205 l_ulong st_gid; 206 l_ushort st_rdev; 207 u_char __pad3[10]; 208 l_longlong st_size; 209 l_ulong st_blksize; 210 l_ulong st_blocks; 211 l_ulong __pad4; 212 struct l_timespec st_atim; 213 struct l_timespec st_mtim; 214 struct l_timespec st_ctim; 215 l_ulonglong st_ino; 216}; 217 218struct l_statfs64 { 219 l_int f_type; 220 l_int f_bsize; 221 uint64_t f_blocks; 222 uint64_t f_bfree; 223 uint64_t f_bavail; 224 uint64_t f_files; 225 uint64_t f_ffree; 226 l_fsid_t f_fsid; 227 l_int f_namelen; 228 l_int f_spare[6]; 229}; 230 231#define LINUX_NSIG_WORDS 2 232 233/* sigaction flags */ 234#define LINUX_SA_NOCLDSTOP 0x00000001 235#define LINUX_SA_NOCLDWAIT 0x00000002 236#define LINUX_SA_SIGINFO 0x00000004 237#define LINUX_SA_RESTORER 0x04000000 238#define LINUX_SA_ONSTACK 0x08000000 239#define LINUX_SA_RESTART 0x10000000 240#define LINUX_SA_INTERRUPT 0x20000000 241#define LINUX_SA_NOMASK 0x40000000 242#define LINUX_SA_ONESHOT 0x80000000 243 244/* sigprocmask actions */ 245#define LINUX_SIG_BLOCK 0 246#define LINUX_SIG_UNBLOCK 1 247#define LINUX_SIG_SETMASK 2 248 249/* sigaltstack */ 250#define LINUX_MINSIGSTKSZ 2048 251 252typedef void (*l_handler_t)(l_int); 253typedef l_ulong l_osigset_t; 254 255typedef struct { 256 l_handler_t lsa_handler; 257 l_osigset_t lsa_mask; 258 l_ulong lsa_flags; 259 void (*lsa_restorer)(void); 260} l_osigaction_t; 261 262typedef struct { 263 l_handler_t lsa_handler; 264 l_ulong lsa_flags; 265 void (*lsa_restorer)(void); 266 l_sigset_t lsa_mask; 267} l_sigaction_t; 268 269typedef struct { 270 void *ss_sp; 271 l_int ss_flags; 272 l_size_t ss_size; 273} l_stack_t; 274 275/* The Linux sigcontext, pretty much a standard 386 trapframe. */ 276struct l_sigcontext { 277 l_int sc_gs; 278 l_int sc_fs; 279 l_int sc_es; 280 l_int sc_ds; 281 l_int sc_edi; 282 l_int sc_esi; 283 l_int sc_ebp; 284 l_int sc_esp; 285 l_int sc_ebx; 286 l_int sc_edx; 287 l_int sc_ecx; 288 l_int sc_eax; 289 l_int sc_trapno; 290 l_int sc_err; 291 l_int sc_eip; 292 l_int sc_cs; 293 l_int sc_eflags; 294 l_int sc_esp_at_signal; 295 l_int sc_ss; 296 l_int sc_387; 297 l_int sc_mask; 298 l_int sc_cr2; 299}; 300 301struct l_ucontext { 302 l_ulong uc_flags; 303 void *uc_link; 304 l_stack_t uc_stack; 305 struct l_sigcontext uc_mcontext; 306 l_sigset_t uc_sigmask; 307}; 308 309#define LINUX_SI_MAX_SIZE 128 310#define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 311 312typedef union l_sigval { 313 l_int sival_int; 314 l_uintptr_t sival_ptr; 315} l_sigval_t; 316 317typedef struct l_siginfo { 318 l_int lsi_signo; 319 l_int lsi_errno; 320 l_int lsi_code; 321 union { 322 l_int _pad[LINUX_SI_PAD_SIZE]; 323 324 struct { 325 l_pid_t _pid; 326 l_uid_t _uid; 327 } _kill; 328 329 struct { 330 l_timer_t _tid; 331 l_int _overrun; 332 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 333 l_sigval_t _sigval; 334 l_int _sys_private; 335 } _timer; 336 337 struct { 338 l_pid_t _pid; /* sender's pid */ 339 l_uid_t _uid; /* sender's uid */ 340 l_sigval_t _sigval; 341 } _rt; 342 343 struct { 344 l_pid_t _pid; /* which child */ 345 l_uid_t _uid; /* sender's uid */ 346 l_int _status; /* exit code */ 347 l_clock_t _utime; 348 l_clock_t _stime; 349 } _sigchld; 350 351 struct { 352 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 353 } _sigfault; 354 355 struct { 356 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 357 l_int _fd; 358 } _sigpoll; 359 } _sifields; 360} l_siginfo_t; 361 362#define lsi_pid _sifields._kill._pid 363#define lsi_uid _sifields._kill._uid 364#define lsi_tid _sifields._timer._tid 365#define lsi_overrun _sifields._timer._overrun 366#define lsi_sys_private _sifields._timer._sys_private 367#define lsi_status _sifields._sigchld._status 368#define lsi_utime _sifields._sigchld._utime 369#define lsi_stime _sifields._sigchld._stime 370#define lsi_value _sifields._rt._sigval 371#define lsi_int _sifields._rt._sigval.sival_int 372#define lsi_ptr _sifields._rt._sigval.sival_ptr 373#define lsi_addr _sifields._sigfault._addr 374#define lsi_band _sifields._sigpoll._band 375#define lsi_fd _sifields._sigpoll._fd 376 377struct l_fpreg { 378 u_int16_t significand[4]; 379 u_int16_t exponent; 380}; 381 382struct l_fpxreg { 383 u_int16_t significand[4]; 384 u_int16_t exponent; 385 u_int16_t padding[3]; 386}; 387 388struct l_xmmreg { 389 u_int32_t element[4]; 390}; 391 392struct l_fpstate { 393 /* Regular FPU environment */ 394 u_int32_t cw; 395 u_int32_t sw; 396 u_int32_t tag; 397 u_int32_t ipoff; 398 u_int32_t cssel; 399 u_int32_t dataoff; 400 u_int32_t datasel; 401 struct l_fpreg _st[8]; 402 u_int16_t status; 403 u_int16_t magic; /* 0xffff = regular FPU data */ 404 405 /* FXSR FPU environment */ 406 u_int32_t _fxsr_env[6]; /* env is ignored. */ 407 u_int32_t mxcsr; 408 u_int32_t reserved; 409 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 410 struct l_xmmreg _xmm[8]; 411 u_int32_t padding[56]; 412}; 413 414/* 415 * We make the stack look like Linux expects it when calling a signal 416 * handler, but use the BSD way of calling the handler and sigreturn(). 417 * This means that we need to pass the pointer to the handler too. 418 * It is appended to the frame to not interfere with the rest of it. 419 */ 420struct l_sigframe { 421 l_int sf_sig; 422 struct l_sigcontext sf_sc; 423 struct l_fpstate sf_fpstate; 424 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 425 l_handler_t sf_handler; 426}; 427 428struct l_rt_sigframe { 429 l_int sf_sig; 430 l_siginfo_t *sf_siginfo; 431 struct l_ucontext *sf_ucontext; 432 l_siginfo_t sf_si; 433 struct l_ucontext sf_sc; 434 l_handler_t sf_handler; 435}; 436 437extern struct sysentvec linux_sysvec; 438 439/* 440 * arch specific open/fcntl flags 441 */ 442#define LINUX_F_GETLK64 12 443#define LINUX_F_SETLK64 13 444#define LINUX_F_SETLKW64 14 445 446union l_semun { 447 l_int val; 448 struct l_semid_ds *buf; 449 l_ushort *array; 450 struct l_seminfo *__buf; 451 void *__pad; 452}; 453 454struct l_ipc_perm { 455 l_key_t key; 456 l_uid16_t uid; 457 l_gid16_t gid; 458 l_uid16_t cuid; 459 l_gid16_t cgid; 460 l_ushort mode; 461 l_ushort seq; 462}; 463 464/* 465 * Socket defines 466 */ 467#define LINUX_SOL_SOCKET 1 468#define LINUX_SOL_IP 0 469#define LINUX_SOL_IPX 256 470#define LINUX_SOL_AX25 257 471#define LINUX_SOL_TCP 6 472#define LINUX_SOL_UDP 17 473 474#define LINUX_SO_DEBUG 1 475#define LINUX_SO_REUSEADDR 2 476#define LINUX_SO_TYPE 3 477#define LINUX_SO_ERROR 4 478#define LINUX_SO_DONTROUTE 5 479#define LINUX_SO_BROADCAST 6 480#define LINUX_SO_SNDBUF 7 481#define LINUX_SO_RCVBUF 8 482#define LINUX_SO_KEEPALIVE 9 483#define LINUX_SO_OOBINLINE 10 484#define LINUX_SO_NO_CHECK 11 485#define LINUX_SO_PRIORITY 12 486#define LINUX_SO_LINGER 13 487#define LINUX_SO_PEERCRED 17 488#define LINUX_SO_RCVLOWAT 18 489#define LINUX_SO_SNDLOWAT 19 490#define LINUX_SO_RCVTIMEO 20 491#define LINUX_SO_SNDTIMEO 21 492#define LINUX_SO_TIMESTAMP 29 493#define LINUX_SO_ACCEPTCONN 30 494 495struct l_sockaddr { 496 l_ushort sa_family; 497 char sa_data[14]; 498}; 499 500struct l_ifmap { 501 l_ulong mem_start; 502 l_ulong mem_end; 503 l_ushort base_addr; 504 u_char irq; 505 u_char dma; 506 u_char port; 507}; 508 509#define LINUX_IFHWADDRLEN 6 510#define LINUX_IFNAMSIZ 16 511 512struct l_ifreq { 513 union { 514 char ifrn_name[LINUX_IFNAMSIZ]; 515 } ifr_ifrn; 516 517 union { 518 struct l_sockaddr ifru_addr; 519 struct l_sockaddr ifru_dstaddr; 520 struct l_sockaddr ifru_broadaddr; 521 struct l_sockaddr ifru_netmask; 522 struct l_sockaddr ifru_hwaddr; 523 l_short ifru_flags[1]; 524 l_int ifru_metric; 525 l_int ifru_mtu; 526 struct l_ifmap ifru_map; 527 char ifru_slave[LINUX_IFNAMSIZ]; 528 l_caddr_t ifru_data; 529 } ifr_ifru; 530}; 531 532#define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 533#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 534 535/* 536 * poll() 537 */ 538#define LINUX_POLLIN 0x0001 539#define LINUX_POLLPRI 0x0002 540#define LINUX_POLLOUT 0x0004 541#define LINUX_POLLERR 0x0008 542#define LINUX_POLLHUP 0x0010 543#define LINUX_POLLNVAL 0x0020 544#define LINUX_POLLRDNORM 0x0040 545#define LINUX_POLLRDBAND 0x0080 546#define LINUX_POLLWRNORM 0x0100 547#define LINUX_POLLWRBAND 0x0200 548#define LINUX_POLLMSG 0x0400 549 550struct l_pollfd { 551 l_int fd; 552 l_short events; 553 l_short revents; 554}; 555 556struct l_user_desc { 557 l_uint entry_number; 558 l_uint base_addr; 559 l_uint limit; 560 l_uint seg_32bit:1; 561 l_uint contents:2; 562 l_uint read_exec_only:1; 563 l_uint limit_in_pages:1; 564 l_uint seg_not_present:1; 565 l_uint useable:1; 566}; 567 568struct l_desc_struct { 569 unsigned long a, b; 570}; 571 572 573#define LINUX_LOWERWORD 0x0000ffff 574 575/* 576 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 577 * These convert Linux user space descriptor to machine one. 578 */ 579#define LINUX_LDT_entry_a(info) \ 580 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 581 ((info)->limit & LINUX_LOWERWORD)) 582 583#define LINUX_ENTRY_B_READ_EXEC_ONLY 9 584#define LINUX_ENTRY_B_CONTENTS 10 585#define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 586#define LINUX_ENTRY_B_BASE_ADDR 16 587#define LINUX_ENTRY_B_USEABLE 20 588#define LINUX_ENTRY_B_SEG32BIT 22 589#define LINUX_ENTRY_B_LIMIT 23 590 591#define LINUX_LDT_entry_b(info) \ 592 (((info)->base_addr & 0xff000000) | \ 593 ((info)->limit & 0xf0000) | \ 594 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 595 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 596 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 597 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 598 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 599 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 600 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 601 602#define LINUX_LDT_empty(info) \ 603 ((info)->base_addr == 0 && \ 604 (info)->limit == 0 && \ 605 (info)->contents == 0 && \ 606 (info)->seg_not_present == 1 && \ 607 (info)->read_exec_only == 1 && \ 608 (info)->seg_32bit == 0 && \ 609 (info)->limit_in_pages == 0 && \ 610 (info)->useable == 0) 611 612/* 613 * Macros for converting segments. 614 * They do the same as those in arch/i386/kernel/process.c in Linux. 615 */ 616#define LINUX_GET_BASE(desc) \ 617 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 618 (((desc)->b << 16) & 0x00ff0000) | \ 619 ((desc)->b & 0xff000000)) 620 621#define LINUX_GET_LIMIT(desc) \ 622 (((desc)->a & LINUX_LOWERWORD) | \ 623 ((desc)->b & 0xf0000)) 624 625#define LINUX_GET_32BIT(desc) \ 626 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 627#define LINUX_GET_CONTENTS(desc) \ 628 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 629#define LINUX_GET_WRITABLE(desc) \ 630 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 631#define LINUX_GET_LIMIT_PAGES(desc) \ 632 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 633#define LINUX_GET_PRESENT(desc) \ 634 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 635#define LINUX_GET_USEABLE(desc) \ 636 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 637 638#define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r)) 639 640/* robust futexes */ 641struct linux_robust_list { 642 struct linux_robust_list *next; 643}; 644 645struct linux_robust_list_head { 646 struct linux_robust_list list; 647 l_long futex_offset; 648 struct linux_robust_list *pending_list; 649}; 650 651#endif /* !_I386_LINUX_H_ */ 652