FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux.h
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/10.0/sys/i386/linux/linux.h 246085 2013-01-29 18:41:30Z jhb $
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 /*
58 * Provide a separate set of types for the Linux types.
59 */
60 typedef int l_int;
61 typedef int32_t l_long;
62 typedef int64_t l_longlong;
63 typedef short l_short;
64 typedef unsigned int l_uint;
65 typedef uint32_t l_ulong;
66 typedef uint64_t l_ulonglong;
67 typedef unsigned short l_ushort;
68
69 typedef char *l_caddr_t;
70 typedef l_ulong l_uintptr_t;
71 typedef l_long l_clock_t;
72 typedef l_int l_daddr_t;
73 typedef l_ushort l_dev_t;
74 typedef l_uint l_gid_t;
75 typedef l_ushort l_gid16_t;
76 typedef l_ulong l_ino_t;
77 typedef l_int l_key_t;
78 typedef l_longlong l_loff_t;
79 typedef l_ushort l_mode_t;
80 typedef l_long l_off_t;
81 typedef l_int l_pid_t;
82 typedef l_uint l_size_t;
83 typedef l_long l_suseconds_t;
84 typedef l_long l_time_t;
85 typedef l_uint l_uid_t;
86 typedef l_ushort l_uid16_t;
87 typedef l_int l_timer_t;
88 typedef l_int l_mqd_t;
89
90 typedef struct {
91 l_int val[2];
92 } l_fsid_t;
93
94 typedef struct {
95 l_time_t tv_sec;
96 l_suseconds_t tv_usec;
97 } l_timeval;
98
99 #define l_fd_set fd_set
100
101 /*
102 * Miscellaneous
103 */
104 #define LINUX_AT_COUNT 16 /* Count of used aux entry types.
105 * Keep this synchronized with
106 * elf_linux_fixup() code.
107 */
108 struct l___sysctl_args
109 {
110 l_int *name;
111 l_int nlen;
112 void *oldval;
113 l_size_t *oldlenp;
114 void *newval;
115 l_size_t newlen;
116 l_ulong __spare[4];
117 };
118
119 /* Resource limits */
120 #define LINUX_RLIMIT_CPU 0
121 #define LINUX_RLIMIT_FSIZE 1
122 #define LINUX_RLIMIT_DATA 2
123 #define LINUX_RLIMIT_STACK 3
124 #define LINUX_RLIMIT_CORE 4
125 #define LINUX_RLIMIT_RSS 5
126 #define LINUX_RLIMIT_NPROC 6
127 #define LINUX_RLIMIT_NOFILE 7
128 #define LINUX_RLIMIT_MEMLOCK 8
129 #define LINUX_RLIMIT_AS 9 /* Address space limit */
130
131 #define LINUX_RLIM_NLIMITS 10
132
133 struct l_rlimit {
134 l_ulong rlim_cur;
135 l_ulong rlim_max;
136 };
137
138 /* mmap options */
139 #define LINUX_MAP_SHARED 0x0001
140 #define LINUX_MAP_PRIVATE 0x0002
141 #define LINUX_MAP_FIXED 0x0010
142 #define LINUX_MAP_ANON 0x0020
143 #define LINUX_MAP_GROWSDOWN 0x0100
144
145 struct l_mmap_argv {
146 l_uintptr_t addr;
147 l_size_t len;
148 l_int prot;
149 l_int flags;
150 l_int fd;
151 l_off_t pgoff;
152 } __packed;
153
154 /*
155 * stat family of syscalls
156 */
157 struct l_timespec {
158 l_time_t tv_sec;
159 l_long tv_nsec;
160 };
161
162 struct l_newstat {
163 l_ushort st_dev;
164 l_ushort __pad1;
165 l_ulong st_ino;
166 l_ushort st_mode;
167 l_ushort st_nlink;
168 l_ushort st_uid;
169 l_ushort st_gid;
170 l_ushort st_rdev;
171 l_ushort __pad2;
172 l_ulong st_size;
173 l_ulong st_blksize;
174 l_ulong st_blocks;
175 struct l_timespec st_atim;
176 struct l_timespec st_mtim;
177 struct l_timespec st_ctim;
178 l_ulong __unused4;
179 l_ulong __unused5;
180 };
181
182 struct l_stat {
183 l_ushort st_dev;
184 l_ulong st_ino;
185 l_ushort st_mode;
186 l_ushort st_nlink;
187 l_ushort st_uid;
188 l_ushort st_gid;
189 l_ushort st_rdev;
190 l_long st_size;
191 struct l_timespec st_atim;
192 struct l_timespec st_mtim;
193 struct l_timespec st_ctim;
194 l_long st_blksize;
195 l_long st_blocks;
196 l_ulong st_flags;
197 l_ulong st_gen;
198 };
199
200 struct l_stat64 {
201 l_ushort st_dev;
202 u_char __pad0[10];
203 l_ulong __st_ino;
204 l_uint st_mode;
205 l_uint st_nlink;
206 l_ulong st_uid;
207 l_ulong st_gid;
208 l_ushort st_rdev;
209 u_char __pad3[10];
210 l_longlong st_size;
211 l_ulong st_blksize;
212 l_ulong st_blocks;
213 l_ulong __pad4;
214 struct l_timespec st_atim;
215 struct l_timespec st_mtim;
216 struct l_timespec st_ctim;
217 l_ulonglong st_ino;
218 };
219
220 struct l_statfs64 {
221 l_int f_type;
222 l_int f_bsize;
223 uint64_t f_blocks;
224 uint64_t f_bfree;
225 uint64_t f_bavail;
226 uint64_t f_files;
227 uint64_t f_ffree;
228 l_fsid_t f_fsid;
229 l_int f_namelen;
230 l_int f_spare[6];
231 };
232
233 /*
234 * Signalling
235 */
236 #define LINUX_SIGHUP 1
237 #define LINUX_SIGINT 2
238 #define LINUX_SIGQUIT 3
239 #define LINUX_SIGILL 4
240 #define LINUX_SIGTRAP 5
241 #define LINUX_SIGABRT 6
242 #define LINUX_SIGIOT LINUX_SIGABRT
243 #define LINUX_SIGBUS 7
244 #define LINUX_SIGFPE 8
245 #define LINUX_SIGKILL 9
246 #define LINUX_SIGUSR1 10
247 #define LINUX_SIGSEGV 11
248 #define LINUX_SIGUSR2 12
249 #define LINUX_SIGPIPE 13
250 #define LINUX_SIGALRM 14
251 #define LINUX_SIGTERM 15
252 #define LINUX_SIGSTKFLT 16
253 #define LINUX_SIGCHLD 17
254 #define LINUX_SIGCONT 18
255 #define LINUX_SIGSTOP 19
256 #define LINUX_SIGTSTP 20
257 #define LINUX_SIGTTIN 21
258 #define LINUX_SIGTTOU 22
259 #define LINUX_SIGURG 23
260 #define LINUX_SIGXCPU 24
261 #define LINUX_SIGXFSZ 25
262 #define LINUX_SIGVTALRM 26
263 #define LINUX_SIGPROF 27
264 #define LINUX_SIGWINCH 28
265 #define LINUX_SIGIO 29
266 #define LINUX_SIGPOLL LINUX_SIGIO
267 #define LINUX_SIGPWR 30
268 #define LINUX_SIGSYS 31
269 #define LINUX_SIGRTMIN 32
270
271 #define LINUX_SIGTBLSZ 31
272 #define LINUX_NSIG_WORDS 2
273 #define LINUX_NBPW 32
274 #define LINUX_NSIG (LINUX_NBPW * LINUX_NSIG_WORDS)
275
276 /* sigaction flags */
277 #define LINUX_SA_NOCLDSTOP 0x00000001
278 #define LINUX_SA_NOCLDWAIT 0x00000002
279 #define LINUX_SA_SIGINFO 0x00000004
280 #define LINUX_SA_RESTORER 0x04000000
281 #define LINUX_SA_ONSTACK 0x08000000
282 #define LINUX_SA_RESTART 0x10000000
283 #define LINUX_SA_INTERRUPT 0x20000000
284 #define LINUX_SA_NOMASK 0x40000000
285 #define LINUX_SA_ONESHOT 0x80000000
286
287 /* sigprocmask actions */
288 #define LINUX_SIG_BLOCK 0
289 #define LINUX_SIG_UNBLOCK 1
290 #define LINUX_SIG_SETMASK 2
291
292 /* sigset_t macros */
293 #define LINUX_SIGEMPTYSET(set) (set).__bits[0] = (set).__bits[1] = 0
294 #define LINUX_SIGISMEMBER(set, sig) SIGISMEMBER(set, sig)
295 #define LINUX_SIGADDSET(set, sig) SIGADDSET(set, sig)
296
297 /* sigaltstack */
298 #define LINUX_MINSIGSTKSZ 2048
299 #define LINUX_SS_ONSTACK 1
300 #define LINUX_SS_DISABLE 2
301
302 int linux_to_bsd_sigaltstack(int lsa);
303 int bsd_to_linux_sigaltstack(int bsa);
304
305 typedef void (*l_handler_t)(l_int);
306 typedef l_ulong l_osigset_t;
307
308 typedef struct {
309 l_uint __bits[LINUX_NSIG_WORDS];
310 } l_sigset_t;
311
312 typedef struct {
313 l_handler_t lsa_handler;
314 l_osigset_t lsa_mask;
315 l_ulong lsa_flags;
316 void (*lsa_restorer)(void);
317 } l_osigaction_t;
318
319 typedef struct {
320 l_handler_t lsa_handler;
321 l_ulong lsa_flags;
322 void (*lsa_restorer)(void);
323 l_sigset_t lsa_mask;
324 } l_sigaction_t;
325
326 typedef struct {
327 void *ss_sp;
328 l_int ss_flags;
329 l_size_t ss_size;
330 } l_stack_t;
331
332 /* The Linux sigcontext, pretty much a standard 386 trapframe. */
333 struct l_sigcontext {
334 l_int sc_gs;
335 l_int sc_fs;
336 l_int sc_es;
337 l_int sc_ds;
338 l_int sc_edi;
339 l_int sc_esi;
340 l_int sc_ebp;
341 l_int sc_esp;
342 l_int sc_ebx;
343 l_int sc_edx;
344 l_int sc_ecx;
345 l_int sc_eax;
346 l_int sc_trapno;
347 l_int sc_err;
348 l_int sc_eip;
349 l_int sc_cs;
350 l_int sc_eflags;
351 l_int sc_esp_at_signal;
352 l_int sc_ss;
353 l_int sc_387;
354 l_int sc_mask;
355 l_int sc_cr2;
356 };
357
358 struct l_ucontext {
359 l_ulong uc_flags;
360 void *uc_link;
361 l_stack_t uc_stack;
362 struct l_sigcontext uc_mcontext;
363 l_sigset_t uc_sigmask;
364 };
365
366 #define LINUX_SI_MAX_SIZE 128
367 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3)
368
369 typedef union l_sigval {
370 l_int sival_int;
371 l_uintptr_t sival_ptr;
372 } l_sigval_t;
373
374 typedef struct l_siginfo {
375 l_int lsi_signo;
376 l_int lsi_errno;
377 l_int lsi_code;
378 union {
379 l_int _pad[LINUX_SI_PAD_SIZE];
380
381 struct {
382 l_pid_t _pid;
383 l_uid_t _uid;
384 } _kill;
385
386 struct {
387 l_timer_t _tid;
388 l_int _overrun;
389 char _pad[sizeof(l_uid_t) - sizeof(l_int)];
390 l_sigval_t _sigval;
391 l_int _sys_private;
392 } _timer;
393
394 struct {
395 l_pid_t _pid; /* sender's pid */
396 l_uid_t _uid; /* sender's uid */
397 l_sigval_t _sigval;
398 } _rt;
399
400 struct {
401 l_pid_t _pid; /* which child */
402 l_uid_t _uid; /* sender's uid */
403 l_int _status; /* exit code */
404 l_clock_t _utime;
405 l_clock_t _stime;
406 } _sigchld;
407
408 struct {
409 l_uintptr_t _addr; /* Faulting insn/memory ref. */
410 } _sigfault;
411
412 struct {
413 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */
414 l_int _fd;
415 } _sigpoll;
416 } _sifields;
417 } l_siginfo_t;
418
419 #define lsi_pid _sifields._kill._pid
420 #define lsi_uid _sifields._kill._uid
421 #define lsi_tid _sifields._timer._tid
422 #define lsi_overrun _sifields._timer._overrun
423 #define lsi_sys_private _sifields._timer._sys_private
424 #define lsi_status _sifields._sigchld._status
425 #define lsi_utime _sifields._sigchld._utime
426 #define lsi_stime _sifields._sigchld._stime
427 #define lsi_value _sifields._rt._sigval
428 #define lsi_int _sifields._rt._sigval.sival_int
429 #define lsi_ptr _sifields._rt._sigval.sival_ptr
430 #define lsi_addr _sifields._sigfault._addr
431 #define lsi_band _sifields._sigpoll._band
432 #define lsi_fd _sifields._sigpoll._fd
433
434 struct l_fpreg {
435 u_int16_t significand[4];
436 u_int16_t exponent;
437 };
438
439 struct l_fpxreg {
440 u_int16_t significand[4];
441 u_int16_t exponent;
442 u_int16_t padding[3];
443 };
444
445 struct l_xmmreg {
446 u_int32_t element[4];
447 };
448
449 struct l_fpstate {
450 /* Regular FPU environment */
451 u_int32_t cw;
452 u_int32_t sw;
453 u_int32_t tag;
454 u_int32_t ipoff;
455 u_int32_t cssel;
456 u_int32_t dataoff;
457 u_int32_t datasel;
458 struct l_fpreg _st[8];
459 u_int16_t status;
460 u_int16_t magic; /* 0xffff = regular FPU data */
461
462 /* FXSR FPU environment */
463 u_int32_t _fxsr_env[6]; /* env is ignored. */
464 u_int32_t mxcsr;
465 u_int32_t reserved;
466 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */
467 struct l_xmmreg _xmm[8];
468 u_int32_t padding[56];
469 };
470
471 /*
472 * We make the stack look like Linux expects it when calling a signal
473 * handler, but use the BSD way of calling the handler and sigreturn().
474 * This means that we need to pass the pointer to the handler too.
475 * It is appended to the frame to not interfere with the rest of it.
476 */
477 struct l_sigframe {
478 l_int sf_sig;
479 struct l_sigcontext sf_sc;
480 struct l_fpstate sf_fpstate;
481 l_uint sf_extramask[LINUX_NSIG_WORDS-1];
482 l_handler_t sf_handler;
483 };
484
485 struct l_rt_sigframe {
486 l_int sf_sig;
487 l_siginfo_t *sf_siginfo;
488 struct l_ucontext *sf_ucontext;
489 l_siginfo_t sf_si;
490 struct l_ucontext sf_sc;
491 l_handler_t sf_handler;
492 };
493
494 extern struct sysentvec linux_sysvec;
495 extern struct sysentvec elf_linux_sysvec;
496
497 /*
498 * open/fcntl flags
499 */
500 #define LINUX_O_RDONLY 00000000
501 #define LINUX_O_WRONLY 00000001
502 #define LINUX_O_RDWR 00000002
503 #define LINUX_O_ACCMODE 00000003
504 #define LINUX_O_CREAT 00000100
505 #define LINUX_O_EXCL 00000200
506 #define LINUX_O_NOCTTY 00000400
507 #define LINUX_O_TRUNC 00001000
508 #define LINUX_O_APPEND 00002000
509 #define LINUX_O_NONBLOCK 00004000
510 #define LINUX_O_NDELAY LINUX_O_NONBLOCK
511 #define LINUX_O_SYNC 00010000
512 #define LINUX_FASYNC 00020000
513 #define LINUX_O_DIRECT 00040000 /* Direct disk access hint */
514 #define LINUX_O_LARGEFILE 00100000
515 #define LINUX_O_DIRECTORY 00200000 /* Must be a directory */
516 #define LINUX_O_NOFOLLOW 00400000 /* Do not follow links */
517 #define LINUX_O_NOATIME 01000000
518 #define LINUX_O_CLOEXEC 02000000
519
520 #define LINUX_F_DUPFD 0
521 #define LINUX_F_GETFD 1
522 #define LINUX_F_SETFD 2
523 #define LINUX_F_GETFL 3
524 #define LINUX_F_SETFL 4
525 #define LINUX_F_GETLK 5
526 #define LINUX_F_SETLK 6
527 #define LINUX_F_SETLKW 7
528 #define LINUX_F_SETOWN 8
529 #define LINUX_F_GETOWN 9
530
531 #define LINUX_F_GETLK64 12
532 #define LINUX_F_SETLK64 13
533 #define LINUX_F_SETLKW64 14
534
535 #define LINUX_F_RDLCK 0
536 #define LINUX_F_WRLCK 1
537 #define LINUX_F_UNLCK 2
538
539 union l_semun {
540 l_int val;
541 struct l_semid_ds *buf;
542 l_ushort *array;
543 struct l_seminfo *__buf;
544 void *__pad;
545 };
546
547 /*
548 * Socket defines
549 */
550 #define LINUX_SOL_SOCKET 1
551 #define LINUX_SOL_IP 0
552 #define LINUX_SOL_IPX 256
553 #define LINUX_SOL_AX25 257
554 #define LINUX_SOL_TCP 6
555 #define LINUX_SOL_UDP 17
556
557 #define LINUX_SO_DEBUG 1
558 #define LINUX_SO_REUSEADDR 2
559 #define LINUX_SO_TYPE 3
560 #define LINUX_SO_ERROR 4
561 #define LINUX_SO_DONTROUTE 5
562 #define LINUX_SO_BROADCAST 6
563 #define LINUX_SO_SNDBUF 7
564 #define LINUX_SO_RCVBUF 8
565 #define LINUX_SO_KEEPALIVE 9
566 #define LINUX_SO_OOBINLINE 10
567 #define LINUX_SO_NO_CHECK 11
568 #define LINUX_SO_PRIORITY 12
569 #define LINUX_SO_LINGER 13
570 #define LINUX_SO_PEERCRED 17
571 #define LINUX_SO_RCVLOWAT 18
572 #define LINUX_SO_SNDLOWAT 19
573 #define LINUX_SO_RCVTIMEO 20
574 #define LINUX_SO_SNDTIMEO 21
575 #define LINUX_SO_TIMESTAMP 29
576 #define LINUX_SO_ACCEPTCONN 30
577
578 struct l_sockaddr {
579 l_ushort sa_family;
580 char sa_data[14];
581 };
582
583 struct l_msghdr {
584 l_uintptr_t msg_name;
585 l_int msg_namelen;
586 l_uintptr_t msg_iov;
587 l_size_t msg_iovlen;
588 l_uintptr_t msg_control;
589 l_size_t msg_controllen;
590 l_uint msg_flags;
591 };
592
593 struct l_cmsghdr {
594 l_size_t cmsg_len;
595 l_int cmsg_level;
596 l_int cmsg_type;
597 };
598
599 struct l_ifmap {
600 l_ulong mem_start;
601 l_ulong mem_end;
602 l_ushort base_addr;
603 u_char irq;
604 u_char dma;
605 u_char port;
606 };
607
608 #define LINUX_IFHWADDRLEN 6
609 #define LINUX_IFNAMSIZ 16
610
611 struct l_ifreq {
612 union {
613 char ifrn_name[LINUX_IFNAMSIZ];
614 } ifr_ifrn;
615
616 union {
617 struct l_sockaddr ifru_addr;
618 struct l_sockaddr ifru_dstaddr;
619 struct l_sockaddr ifru_broadaddr;
620 struct l_sockaddr ifru_netmask;
621 struct l_sockaddr ifru_hwaddr;
622 l_short ifru_flags[1];
623 l_int ifru_metric;
624 l_int ifru_mtu;
625 struct l_ifmap ifru_map;
626 char ifru_slave[LINUX_IFNAMSIZ];
627 l_caddr_t ifru_data;
628 } ifr_ifru;
629 };
630
631 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */
632 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
633
634 /*
635 * poll()
636 */
637 #define LINUX_POLLIN 0x0001
638 #define LINUX_POLLPRI 0x0002
639 #define LINUX_POLLOUT 0x0004
640 #define LINUX_POLLERR 0x0008
641 #define LINUX_POLLHUP 0x0010
642 #define LINUX_POLLNVAL 0x0020
643 #define LINUX_POLLRDNORM 0x0040
644 #define LINUX_POLLRDBAND 0x0080
645 #define LINUX_POLLWRNORM 0x0100
646 #define LINUX_POLLWRBAND 0x0200
647 #define LINUX_POLLMSG 0x0400
648
649 struct l_pollfd {
650 l_int fd;
651 l_short events;
652 l_short revents;
653 };
654
655 struct l_user_desc {
656 l_uint entry_number;
657 l_uint base_addr;
658 l_uint limit;
659 l_uint seg_32bit:1;
660 l_uint contents:2;
661 l_uint read_exec_only:1;
662 l_uint limit_in_pages:1;
663 l_uint seg_not_present:1;
664 l_uint useable:1;
665 };
666
667 struct l_desc_struct {
668 unsigned long a, b;
669 };
670
671
672 #define LINUX_LOWERWORD 0x0000ffff
673
674 /*
675 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
676 * These convert Linux user space descriptor to machine one.
677 */
678 #define LINUX_LDT_entry_a(info) \
679 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \
680 ((info)->limit & LINUX_LOWERWORD))
681
682 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9
683 #define LINUX_ENTRY_B_CONTENTS 10
684 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15
685 #define LINUX_ENTRY_B_BASE_ADDR 16
686 #define LINUX_ENTRY_B_USEABLE 20
687 #define LINUX_ENTRY_B_SEG32BIT 22
688 #define LINUX_ENTRY_B_LIMIT 23
689
690 #define LINUX_LDT_entry_b(info) \
691 (((info)->base_addr & 0xff000000) | \
692 ((info)->limit & 0xf0000) | \
693 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \
694 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \
695 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \
696 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \
697 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \
698 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \
699 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
700
701 #define LINUX_LDT_empty(info) \
702 ((info)->base_addr == 0 && \
703 (info)->limit == 0 && \
704 (info)->contents == 0 && \
705 (info)->seg_not_present == 1 && \
706 (info)->read_exec_only == 1 && \
707 (info)->seg_32bit == 0 && \
708 (info)->limit_in_pages == 0 && \
709 (info)->useable == 0)
710
711 /*
712 * Macros for converting segments.
713 * They do the same as those in arch/i386/kernel/process.c in Linux.
714 */
715 #define LINUX_GET_BASE(desc) \
716 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \
717 (((desc)->b << 16) & 0x00ff0000) | \
718 ((desc)->b & 0xff000000))
719
720 #define LINUX_GET_LIMIT(desc) \
721 (((desc)->a & LINUX_LOWERWORD) | \
722 ((desc)->b & 0xf0000))
723
724 #define LINUX_GET_32BIT(desc) \
725 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
726 #define LINUX_GET_CONTENTS(desc) \
727 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
728 #define LINUX_GET_WRITABLE(desc) \
729 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
730 #define LINUX_GET_LIMIT_PAGES(desc) \
731 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
732 #define LINUX_GET_PRESENT(desc) \
733 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
734 #define LINUX_GET_USEABLE(desc) \
735 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
736
737 /* robust futexes */
738 struct linux_robust_list {
739 struct linux_robust_list *next;
740 };
741
742 struct linux_robust_list_head {
743 struct linux_robust_list list;
744 l_long futex_offset;
745 struct linux_robust_list *pending_list;
746 };
747
748 #endif /* !_I386_LINUX_H_ */
Cache object: fed844ef789fbedaf20ade7dbf18f4a5
|