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/11.2/sys/i386/linux/linux.h 331722 2018-03-29 02:50:57Z eadler $
29 */
30
31 #ifndef _I386_LINUX_H_
32 #define _I386_LINUX_H_
33
34 #include <sys/signal.h> /* for sigval union */
35
36 #include <compat/linux/linux.h>
37 #include <i386/linux/linux_syscall.h>
38
39 /*
40 * debugging support
41 */
42 extern u_char linux_debug_map[];
43 #define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name)
44 #define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \
45 (long)td->td_proc->p_pid, (long)td->td_tid
46 #define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \
47 (long)td->td_proc->p_pid, (long)td->td_tid
48 #define LINUX_DTRACE linuxulator
49
50 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
51 #define LINUX_USRSTACK LINUX_SHAREDPAGE
52
53 #define PTRIN(v) (void *)(v)
54 #define PTROUT(v) (l_uintptr_t)(v)
55
56 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0)
57 #define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0)
58 #define PTRIN_CP(src,dst,fld) \
59 do { (dst).fld = PTRIN((src).fld); } while (0)
60
61 /*
62 * Provide a separate set of types for the Linux types.
63 */
64 typedef int l_int;
65 typedef int32_t l_long;
66 typedef int64_t l_longlong;
67 typedef short l_short;
68 typedef unsigned int l_uint;
69 typedef uint32_t l_ulong;
70 typedef uint64_t l_ulonglong;
71 typedef unsigned short l_ushort;
72
73 typedef char *l_caddr_t;
74 typedef l_ulong l_uintptr_t;
75 typedef l_long l_clock_t;
76 typedef l_int l_daddr_t;
77 typedef l_ushort l_dev_t;
78 typedef l_uint l_gid_t;
79 typedef l_ushort l_gid16_t;
80 typedef l_ulong l_ino_t;
81 typedef l_int l_key_t;
82 typedef l_longlong l_loff_t;
83 typedef l_ushort l_mode_t;
84 typedef l_long l_off_t;
85 typedef l_int l_pid_t;
86 typedef l_uint l_size_t;
87 typedef l_long l_suseconds_t;
88 typedef l_long l_time_t;
89 typedef l_uint l_uid_t;
90 typedef l_ushort l_uid16_t;
91 typedef l_int l_timer_t;
92 typedef l_int l_mqd_t;
93 typedef l_ulong l_fd_mask;
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 20 /* 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 struct 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 */
155 struct l_timespec {
156 l_time_t tv_sec;
157 l_long tv_nsec;
158 };
159
160 struct 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
180 struct 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
198 struct 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
218 struct 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_frsize;
229 l_int f_flags;
230 l_int f_spare[4];
231 };
232
233 #define LINUX_NSIG_WORDS 2
234
235 /* sigaction flags */
236 #define LINUX_SA_NOCLDSTOP 0x00000001
237 #define LINUX_SA_NOCLDWAIT 0x00000002
238 #define LINUX_SA_SIGINFO 0x00000004
239 #define LINUX_SA_RESTORER 0x04000000
240 #define LINUX_SA_ONSTACK 0x08000000
241 #define LINUX_SA_RESTART 0x10000000
242 #define LINUX_SA_INTERRUPT 0x20000000
243 #define LINUX_SA_NOMASK 0x40000000
244 #define LINUX_SA_ONESHOT 0x80000000
245
246 /* sigprocmask actions */
247 #define LINUX_SIG_BLOCK 0
248 #define LINUX_SIG_UNBLOCK 1
249 #define LINUX_SIG_SETMASK 2
250
251 /* sigaltstack */
252 #define LINUX_MINSIGSTKSZ 2048
253
254 typedef void (*l_handler_t)(l_int);
255 typedef l_ulong l_osigset_t;
256
257 typedef struct {
258 l_handler_t lsa_handler;
259 l_osigset_t lsa_mask;
260 l_ulong lsa_flags;
261 void (*lsa_restorer)(void);
262 } l_osigaction_t;
263
264 typedef struct {
265 l_handler_t lsa_handler;
266 l_ulong lsa_flags;
267 void (*lsa_restorer)(void);
268 l_sigset_t lsa_mask;
269 } l_sigaction_t;
270
271 typedef struct {
272 void *ss_sp;
273 l_int ss_flags;
274 l_size_t ss_size;
275 } l_stack_t;
276
277 /* The Linux sigcontext, pretty much a standard 386 trapframe. */
278 struct l_sigcontext {
279 l_int sc_gs;
280 l_int sc_fs;
281 l_int sc_es;
282 l_int sc_ds;
283 l_int sc_edi;
284 l_int sc_esi;
285 l_int sc_ebp;
286 l_int sc_esp;
287 l_int sc_ebx;
288 l_int sc_edx;
289 l_int sc_ecx;
290 l_int sc_eax;
291 l_int sc_trapno;
292 l_int sc_err;
293 l_int sc_eip;
294 l_int sc_cs;
295 l_int sc_eflags;
296 l_int sc_esp_at_signal;
297 l_int sc_ss;
298 l_int sc_387;
299 l_int sc_mask;
300 l_int sc_cr2;
301 };
302
303 struct l_ucontext {
304 l_ulong uc_flags;
305 void *uc_link;
306 l_stack_t uc_stack;
307 struct l_sigcontext uc_mcontext;
308 l_sigset_t uc_sigmask;
309 };
310
311 #define LINUX_SI_MAX_SIZE 128
312 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3)
313
314 typedef union l_sigval {
315 l_int sival_int;
316 l_uintptr_t sival_ptr;
317 } l_sigval_t;
318
319 typedef struct l_siginfo {
320 l_int lsi_signo;
321 l_int lsi_errno;
322 l_int lsi_code;
323 union {
324 l_int _pad[LINUX_SI_PAD_SIZE];
325
326 struct {
327 l_pid_t _pid;
328 l_uid_t _uid;
329 } _kill;
330
331 struct {
332 l_timer_t _tid;
333 l_int _overrun;
334 char _pad[sizeof(l_uid_t) - sizeof(l_int)];
335 l_sigval_t _sigval;
336 l_int _sys_private;
337 } _timer;
338
339 struct {
340 l_pid_t _pid; /* sender's pid */
341 l_uid_t _uid; /* sender's uid */
342 l_sigval_t _sigval;
343 } _rt;
344
345 struct {
346 l_pid_t _pid; /* which child */
347 l_uid_t _uid; /* sender's uid */
348 l_int _status; /* exit code */
349 l_clock_t _utime;
350 l_clock_t _stime;
351 } _sigchld;
352
353 struct {
354 l_uintptr_t _addr; /* Faulting insn/memory ref. */
355 } _sigfault;
356
357 struct {
358 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */
359 l_int _fd;
360 } _sigpoll;
361 } _sifields;
362 } l_siginfo_t;
363
364 #define lsi_pid _sifields._kill._pid
365 #define lsi_uid _sifields._kill._uid
366 #define lsi_tid _sifields._timer._tid
367 #define lsi_overrun _sifields._timer._overrun
368 #define lsi_sys_private _sifields._timer._sys_private
369 #define lsi_status _sifields._sigchld._status
370 #define lsi_utime _sifields._sigchld._utime
371 #define lsi_stime _sifields._sigchld._stime
372 #define lsi_value _sifields._rt._sigval
373 #define lsi_int _sifields._rt._sigval.sival_int
374 #define lsi_ptr _sifields._rt._sigval.sival_ptr
375 #define lsi_addr _sifields._sigfault._addr
376 #define lsi_band _sifields._sigpoll._band
377 #define lsi_fd _sifields._sigpoll._fd
378
379 struct l_fpreg {
380 u_int16_t significand[4];
381 u_int16_t exponent;
382 };
383
384 struct l_fpxreg {
385 u_int16_t significand[4];
386 u_int16_t exponent;
387 u_int16_t padding[3];
388 };
389
390 struct l_xmmreg {
391 u_int32_t element[4];
392 };
393
394 struct l_fpstate {
395 /* Regular FPU environment */
396 u_int32_t cw;
397 u_int32_t sw;
398 u_int32_t tag;
399 u_int32_t ipoff;
400 u_int32_t cssel;
401 u_int32_t dataoff;
402 u_int32_t datasel;
403 struct l_fpreg _st[8];
404 u_int16_t status;
405 u_int16_t magic; /* 0xffff = regular FPU data */
406
407 /* FXSR FPU environment */
408 u_int32_t _fxsr_env[6]; /* env is ignored. */
409 u_int32_t mxcsr;
410 u_int32_t reserved;
411 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */
412 struct l_xmmreg _xmm[8];
413 u_int32_t padding[56];
414 };
415
416 /*
417 * We make the stack look like Linux expects it when calling a signal
418 * handler, but use the BSD way of calling the handler and sigreturn().
419 * This means that we need to pass the pointer to the handler too.
420 * It is appended to the frame to not interfere with the rest of it.
421 */
422 struct l_sigframe {
423 l_int sf_sig;
424 struct l_sigcontext sf_sc;
425 struct l_fpstate sf_fpstate;
426 l_uint sf_extramask[LINUX_NSIG_WORDS-1];
427 l_handler_t sf_handler;
428 };
429
430 struct l_rt_sigframe {
431 l_int sf_sig;
432 l_siginfo_t *sf_siginfo;
433 struct l_ucontext *sf_ucontext;
434 l_siginfo_t sf_si;
435 struct l_ucontext sf_sc;
436 l_handler_t sf_handler;
437 };
438
439 extern struct sysentvec linux_sysvec;
440
441 /*
442 * arch specific open/fcntl flags
443 */
444 #define LINUX_F_GETLK64 12
445 #define LINUX_F_SETLK64 13
446 #define LINUX_F_SETLKW64 14
447
448 union l_semun {
449 l_int val;
450 struct l_semid_ds *buf;
451 l_ushort *array;
452 struct l_seminfo *__buf;
453 void *__pad;
454 };
455
456 struct l_sockaddr {
457 l_ushort sa_family;
458 char sa_data[14];
459 };
460
461 struct l_ifmap {
462 l_ulong mem_start;
463 l_ulong mem_end;
464 l_ushort base_addr;
465 u_char irq;
466 u_char dma;
467 u_char port;
468 };
469
470 #define LINUX_IFHWADDRLEN 6
471 #define LINUX_IFNAMSIZ 16
472
473 struct l_ifreq {
474 union {
475 char ifrn_name[LINUX_IFNAMSIZ];
476 } ifr_ifrn;
477
478 union {
479 struct l_sockaddr ifru_addr;
480 struct l_sockaddr ifru_dstaddr;
481 struct l_sockaddr ifru_broadaddr;
482 struct l_sockaddr ifru_netmask;
483 struct l_sockaddr ifru_hwaddr;
484 l_short ifru_flags[1];
485 l_int ifru_ivalue;
486 l_int ifru_mtu;
487 struct l_ifmap ifru_map;
488 char ifru_slave[LINUX_IFNAMSIZ];
489 l_caddr_t ifru_data;
490 } ifr_ifru;
491 };
492
493 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */
494 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
495 #define ifr_ifindex ifr_ifru.ifru_ivalue /* Interface index */
496
497 /*
498 * poll()
499 */
500 #define LINUX_POLLIN 0x0001
501 #define LINUX_POLLPRI 0x0002
502 #define LINUX_POLLOUT 0x0004
503 #define LINUX_POLLERR 0x0008
504 #define LINUX_POLLHUP 0x0010
505 #define LINUX_POLLNVAL 0x0020
506 #define LINUX_POLLRDNORM 0x0040
507 #define LINUX_POLLRDBAND 0x0080
508 #define LINUX_POLLWRNORM 0x0100
509 #define LINUX_POLLWRBAND 0x0200
510 #define LINUX_POLLMSG 0x0400
511
512 struct l_pollfd {
513 l_int fd;
514 l_short events;
515 l_short revents;
516 };
517
518 struct l_user_desc {
519 l_uint entry_number;
520 l_uint base_addr;
521 l_uint limit;
522 l_uint seg_32bit:1;
523 l_uint contents:2;
524 l_uint read_exec_only:1;
525 l_uint limit_in_pages:1;
526 l_uint seg_not_present:1;
527 l_uint useable:1;
528 };
529
530 struct l_desc_struct {
531 unsigned long a, b;
532 };
533
534
535 #define LINUX_LOWERWORD 0x0000ffff
536
537 /*
538 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h.
539 * These convert Linux user space descriptor to machine one.
540 */
541 #define LINUX_LDT_entry_a(info) \
542 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \
543 ((info)->limit & LINUX_LOWERWORD))
544
545 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9
546 #define LINUX_ENTRY_B_CONTENTS 10
547 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15
548 #define LINUX_ENTRY_B_BASE_ADDR 16
549 #define LINUX_ENTRY_B_USEABLE 20
550 #define LINUX_ENTRY_B_SEG32BIT 22
551 #define LINUX_ENTRY_B_LIMIT 23
552
553 #define LINUX_LDT_entry_b(info) \
554 (((info)->base_addr & 0xff000000) | \
555 ((info)->limit & 0xf0000) | \
556 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \
557 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \
558 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \
559 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \
560 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \
561 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \
562 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000)
563
564 #define LINUX_LDT_empty(info) \
565 ((info)->base_addr == 0 && \
566 (info)->limit == 0 && \
567 (info)->contents == 0 && \
568 (info)->seg_not_present == 1 && \
569 (info)->read_exec_only == 1 && \
570 (info)->seg_32bit == 0 && \
571 (info)->limit_in_pages == 0 && \
572 (info)->useable == 0)
573
574 /*
575 * Macros for converting segments.
576 * They do the same as those in arch/i386/kernel/process.c in Linux.
577 */
578 #define LINUX_GET_BASE(desc) \
579 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \
580 (((desc)->b << 16) & 0x00ff0000) | \
581 ((desc)->b & 0xff000000))
582
583 #define LINUX_GET_LIMIT(desc) \
584 (((desc)->a & LINUX_LOWERWORD) | \
585 ((desc)->b & 0xf0000))
586
587 #define LINUX_GET_32BIT(desc) \
588 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1)
589 #define LINUX_GET_CONTENTS(desc) \
590 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3)
591 #define LINUX_GET_WRITABLE(desc) \
592 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1)
593 #define LINUX_GET_LIMIT_PAGES(desc) \
594 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1)
595 #define LINUX_GET_PRESENT(desc) \
596 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1)
597 #define LINUX_GET_USEABLE(desc) \
598 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1)
599
600 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r))
601
602 /* robust futexes */
603 struct linux_robust_list {
604 struct linux_robust_list *next;
605 };
606
607 struct linux_robust_list_head {
608 struct linux_robust_list list;
609 l_long futex_offset;
610 struct linux_robust_list *pending_list;
611 };
612
613 #endif /* !_I386_LINUX_H_ */
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