1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1994-1996 Søren Schmidt 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * $FreeBSD$ 28 */ 29 30 #ifndef _I386_LINUX_H_ 31 #define _I386_LINUX_H_ 32 33 #include <sys/abi_compat.h> 34 #include <sys/signal.h> /* for sigval union */ 35 36 #include <compat/linux/linux.h> 37 #include <i386/linux/linux_syscall.h> 38 39 #define LINUX_LEGACY_SYSCALLS 40 41 #define LINUX_DTRACE linuxulator 42 43 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 44 #define LINUX_USRSTACK LINUX_SHAREDPAGE 45 46 /* 47 * Provide a separate set of types for the Linux types. 48 */ 49 typedef int l_int; 50 typedef int32_t l_long; 51 typedef int64_t l_longlong; 52 typedef short l_short; 53 typedef unsigned int l_uint; 54 typedef uint32_t l_ulong; 55 typedef uint64_t l_ulonglong; 56 typedef unsigned short l_ushort; 57 58 typedef char *l_caddr_t; 59 typedef l_ulong l_uintptr_t; 60 typedef l_long l_clock_t; 61 typedef l_int l_daddr_t; 62 typedef l_ushort l_dev_t; 63 typedef l_uint l_gid_t; 64 typedef l_ushort l_gid16_t; 65 typedef l_ulong l_ino_t; 66 typedef l_int l_key_t; 67 typedef l_longlong l_loff_t; 68 typedef l_ushort l_mode_t; 69 typedef l_long l_off_t; 70 typedef l_int l_pid_t; 71 typedef l_uint l_size_t; 72 typedef l_long l_suseconds_t; 73 typedef l_long l_time_t; 74 typedef l_longlong l_time64_t; 75 typedef l_uint l_uid_t; 76 typedef l_ushort l_uid16_t; 77 typedef l_int l_timer_t; 78 typedef l_int l_mqd_t; 79 typedef l_ulong l_fd_mask; 80 81 typedef struct { 82 l_int val[2]; 83 } l_fsid_t; 84 85 typedef struct { 86 l_time_t tv_sec; 87 l_suseconds_t tv_usec; 88 } l_timeval; 89 90 #define l_fd_set fd_set 91 92 /* 93 * Miscellaneous 94 */ 95 #define LINUX_AT_COUNT 20 /* Count of used aux entry types. 96 * Keep this synchronized with 97 * linux_fixup_elf() code. 98 */ 99 struct l___sysctl_args 100 { 101 l_int *name; 102 l_int nlen; 103 void *oldval; 104 l_size_t *oldlenp; 105 void *newval; 106 l_size_t newlen; 107 l_ulong __spare[4]; 108 }; 109 110 /* Resource limits */ 111 #define LINUX_RLIMIT_CPU 0 112 #define LINUX_RLIMIT_FSIZE 1 113 #define LINUX_RLIMIT_DATA 2 114 #define LINUX_RLIMIT_STACK 3 115 #define LINUX_RLIMIT_CORE 4 116 #define LINUX_RLIMIT_RSS 5 117 #define LINUX_RLIMIT_NPROC 6 118 #define LINUX_RLIMIT_NOFILE 7 119 #define LINUX_RLIMIT_MEMLOCK 8 120 #define LINUX_RLIMIT_AS 9 /* Address space limit */ 121 122 #define LINUX_RLIM_NLIMITS 10 123 124 struct l_rlimit { 125 l_ulong rlim_cur; 126 l_ulong rlim_max; 127 }; 128 129 struct l_mmap_argv { 130 l_uintptr_t addr; 131 l_size_t len; 132 l_int prot; 133 l_int flags; 134 l_int fd; 135 l_off_t pgoff; 136 }; 137 138 /* 139 * stat family of syscalls 140 */ 141 struct l_timespec { 142 l_time_t tv_sec; 143 l_long tv_nsec; 144 }; 145 146 /* __kernel_timespec */ 147 struct l_timespec64 { 148 l_time64_t tv_sec; 149 l_longlong tv_nsec; 150 }; 151 152 struct l_newstat { 153 l_ushort st_dev; 154 l_ushort __pad1; 155 l_ulong st_ino; 156 l_ushort st_mode; 157 l_ushort st_nlink; 158 l_ushort st_uid; 159 l_ushort st_gid; 160 l_ushort st_rdev; 161 l_ushort __pad2; 162 l_ulong st_size; 163 l_ulong st_blksize; 164 l_ulong st_blocks; 165 struct l_timespec st_atim; 166 struct l_timespec st_mtim; 167 struct l_timespec st_ctim; 168 l_ulong __unused4; 169 l_ulong __unused5; 170 }; 171 172 struct l_stat { 173 l_ushort st_dev; 174 l_ulong st_ino; 175 l_ushort st_mode; 176 l_ushort st_nlink; 177 l_ushort st_uid; 178 l_ushort st_gid; 179 l_ushort st_rdev; 180 l_long st_size; 181 struct l_timespec st_atim; 182 struct l_timespec st_mtim; 183 struct l_timespec st_ctim; 184 l_long st_blksize; 185 l_long st_blocks; 186 l_ulong st_flags; 187 l_ulong st_gen; 188 }; 189 190 struct l_stat64 { 191 l_ushort st_dev; 192 u_char __pad0[10]; 193 l_ulong __st_ino; 194 l_uint st_mode; 195 l_uint st_nlink; 196 l_ulong st_uid; 197 l_ulong st_gid; 198 l_ushort st_rdev; 199 u_char __pad3[10]; 200 l_longlong st_size; 201 l_ulong st_blksize; 202 l_ulong st_blocks; 203 l_ulong __pad4; 204 struct l_timespec st_atim; 205 struct l_timespec st_mtim; 206 struct l_timespec st_ctim; 207 l_ulonglong st_ino; 208 }; 209 210 struct l_statfs64 { 211 l_int f_type; 212 l_int f_bsize; 213 uint64_t f_blocks; 214 uint64_t f_bfree; 215 uint64_t f_bavail; 216 uint64_t f_files; 217 uint64_t f_ffree; 218 l_fsid_t f_fsid; 219 l_int f_namelen; 220 l_int f_frsize; 221 l_int f_flags; 222 l_int f_spare[4]; 223 }; 224 225 #define LINUX_NSIG_WORDS 2 226 227 /* sigaction flags */ 228 #define LINUX_SA_NOCLDSTOP 0x00000001 229 #define LINUX_SA_NOCLDWAIT 0x00000002 230 #define LINUX_SA_SIGINFO 0x00000004 231 #define LINUX_SA_RESTORER 0x04000000 232 #define LINUX_SA_ONSTACK 0x08000000 233 #define LINUX_SA_RESTART 0x10000000 234 #define LINUX_SA_INTERRUPT 0x20000000 235 #define LINUX_SA_NOMASK 0x40000000 236 #define LINUX_SA_ONESHOT 0x80000000 237 238 /* sigprocmask actions */ 239 #define LINUX_SIG_BLOCK 0 240 #define LINUX_SIG_UNBLOCK 1 241 #define LINUX_SIG_SETMASK 2 242 243 /* sigaltstack */ 244 #define LINUX_MINSIGSTKSZ 2048 245 246 typedef void (*l_handler_t)(l_int); 247 typedef l_ulong l_osigset_t; 248 249 typedef struct { 250 l_handler_t lsa_handler; 251 l_osigset_t lsa_mask; 252 l_ulong lsa_flags; 253 void (*lsa_restorer)(void); 254 } l_osigaction_t; 255 256 typedef struct { 257 l_handler_t lsa_handler; 258 l_ulong lsa_flags; 259 void (*lsa_restorer)(void); 260 l_sigset_t lsa_mask; 261 } l_sigaction_t; 262 263 typedef struct { 264 void *ss_sp; 265 l_int ss_flags; 266 l_size_t ss_size; 267 } l_stack_t; 268 269 /* The Linux sigcontext, pretty much a standard 386 trapframe. */ 270 struct l_sigcontext { 271 l_int sc_gs; 272 l_int sc_fs; 273 l_int sc_es; 274 l_int sc_ds; 275 l_int sc_edi; 276 l_int sc_esi; 277 l_int sc_ebp; 278 l_int sc_esp; 279 l_int sc_ebx; 280 l_int sc_edx; 281 l_int sc_ecx; 282 l_int sc_eax; 283 l_int sc_trapno; 284 l_int sc_err; 285 l_int sc_eip; 286 l_int sc_cs; 287 l_int sc_eflags; 288 l_int sc_esp_at_signal; 289 l_int sc_ss; 290 l_int sc_387; 291 l_int sc_mask; 292 l_int sc_cr2; 293 }; 294 295 struct l_ucontext { 296 l_ulong uc_flags; 297 void *uc_link; 298 l_stack_t uc_stack; 299 struct l_sigcontext uc_mcontext; 300 l_sigset_t uc_sigmask; 301 }; 302 303 #define LINUX_SI_MAX_SIZE 128 304 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 305 306 typedef union l_sigval { 307 l_int sival_int; 308 l_uintptr_t sival_ptr; 309 } l_sigval_t; 310 311 typedef struct l_siginfo { 312 l_int lsi_signo; 313 l_int lsi_errno; 314 l_int lsi_code; 315 union { 316 l_int _pad[LINUX_SI_PAD_SIZE]; 317 318 struct { 319 l_pid_t _pid; 320 l_uid_t _uid; 321 } _kill; 322 323 struct { 324 l_timer_t _tid; 325 l_int _overrun; 326 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 327 l_sigval_t _sigval; 328 l_int _sys_private; 329 } _timer; 330 331 struct { 332 l_pid_t _pid; /* sender's pid */ 333 l_uid_t _uid; /* sender's uid */ 334 l_sigval_t _sigval; 335 } _rt; 336 337 struct { 338 l_pid_t _pid; /* which child */ 339 l_uid_t _uid; /* sender's uid */ 340 l_int _status; /* exit code */ 341 l_clock_t _utime; 342 l_clock_t _stime; 343 } _sigchld; 344 345 struct { 346 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 347 } _sigfault; 348 349 struct { 350 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 351 l_int _fd; 352 } _sigpoll; 353 } _sifields; 354 } l_siginfo_t; 355 356 #define lsi_pid _sifields._kill._pid 357 #define lsi_uid _sifields._kill._uid 358 #define lsi_tid _sifields._timer._tid 359 #define lsi_overrun _sifields._timer._overrun 360 #define lsi_sys_private _sifields._timer._sys_private 361 #define lsi_status _sifields._sigchld._status 362 #define lsi_utime _sifields._sigchld._utime 363 #define lsi_stime _sifields._sigchld._stime 364 #define lsi_value _sifields._rt._sigval 365 #define lsi_int _sifields._rt._sigval.sival_int 366 #define lsi_ptr _sifields._rt._sigval.sival_ptr 367 #define lsi_addr _sifields._sigfault._addr 368 #define lsi_band _sifields._sigpoll._band 369 #define lsi_fd _sifields._sigpoll._fd 370 371 struct l_fpreg { 372 u_int16_t significand[4]; 373 u_int16_t exponent; 374 }; 375 376 struct l_fpxreg { 377 u_int16_t significand[4]; 378 u_int16_t exponent; 379 u_int16_t padding[3]; 380 }; 381 382 struct l_xmmreg { 383 u_int32_t element[4]; 384 }; 385 386 struct l_fpstate { 387 /* Regular FPU environment */ 388 u_int32_t cw; 389 u_int32_t sw; 390 u_int32_t tag; 391 u_int32_t ipoff; 392 u_int32_t cssel; 393 u_int32_t dataoff; 394 u_int32_t datasel; 395 struct l_fpreg _st[8]; 396 u_int16_t status; 397 u_int16_t magic; /* 0xffff = regular FPU data */ 398 399 /* FXSR FPU environment */ 400 u_int32_t _fxsr_env[6]; /* env is ignored. */ 401 u_int32_t mxcsr; 402 u_int32_t reserved; 403 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 404 struct l_xmmreg _xmm[8]; 405 u_int32_t padding[56]; 406 }; 407 408 /* 409 * We make the stack look like Linux expects it when calling a signal 410 * handler, but use the BSD way of calling the handler and sigreturn(). 411 * This means that we need to pass the pointer to the handler too. 412 * It is appended to the frame to not interfere with the rest of it. 413 */ 414 struct l_sigframe { 415 l_int sf_sig; 416 struct l_sigcontext sf_sc; 417 struct l_fpstate sf_fpstate; 418 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 419 l_handler_t sf_handler; 420 }; 421 422 struct l_rt_sigframe { 423 l_int sf_sig; 424 l_siginfo_t *sf_siginfo; 425 struct l_ucontext *sf_ucontext; 426 l_siginfo_t sf_si; 427 struct l_ucontext sf_sc; 428 l_handler_t sf_handler; 429 }; 430 431 extern struct sysentvec linux_sysvec; 432 433 /* 434 * arch specific open/fcntl flags 435 */ 436 #define LINUX_F_GETLK64 12 437 #define LINUX_F_SETLK64 13 438 #define LINUX_F_SETLKW64 14 439 440 union l_semun { 441 l_int val; 442 l_uintptr_t buf; 443 l_ushort *array; 444 l_uintptr_t __buf; 445 l_uintptr_t __pad; 446 }; 447 448 struct l_ifmap { 449 l_ulong mem_start; 450 l_ulong mem_end; 451 l_ushort base_addr; 452 u_char irq; 453 u_char dma; 454 u_char port; 455 }; 456 457 struct l_ifreq { 458 union { 459 char ifrn_name[LINUX_IFNAMSIZ]; 460 } ifr_ifrn; 461 462 union { 463 struct l_sockaddr ifru_addr; 464 struct l_sockaddr ifru_dstaddr; 465 struct l_sockaddr ifru_broadaddr; 466 struct l_sockaddr ifru_netmask; 467 struct l_sockaddr ifru_hwaddr; 468 l_short ifru_flags[1]; 469 l_int ifru_ivalue; 470 l_int ifru_mtu; 471 struct l_ifmap ifru_map; 472 char ifru_slave[LINUX_IFNAMSIZ]; 473 l_caddr_t ifru_data; 474 } ifr_ifru; 475 }; 476 477 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 478 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 479 #define ifr_ifindex ifr_ifru.ifru_ivalue /* Interface index */ 480 481 struct l_user_desc { 482 l_uint entry_number; 483 l_uint base_addr; 484 l_uint limit; 485 l_uint seg_32bit:1; 486 l_uint contents:2; 487 l_uint read_exec_only:1; 488 l_uint limit_in_pages:1; 489 l_uint seg_not_present:1; 490 l_uint useable:1; 491 }; 492 493 struct l_desc_struct { 494 unsigned long a, b; 495 }; 496 497 #define LINUX_LOWERWORD 0x0000ffff 498 499 /* 500 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 501 * These convert Linux user space descriptor to machine one. 502 */ 503 #define LINUX_LDT_entry_a(info) \ 504 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 505 ((info)->limit & LINUX_LOWERWORD)) 506 507 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9 508 #define LINUX_ENTRY_B_CONTENTS 10 509 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 510 #define LINUX_ENTRY_B_BASE_ADDR 16 511 #define LINUX_ENTRY_B_USEABLE 20 512 #define LINUX_ENTRY_B_SEG32BIT 22 513 #define LINUX_ENTRY_B_LIMIT 23 514 515 #define LINUX_LDT_entry_b(info) \ 516 (((info)->base_addr & 0xff000000) | \ 517 ((info)->limit & 0xf0000) | \ 518 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 519 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 520 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 521 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 522 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 523 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 524 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 525 526 #define LINUX_LDT_empty(info) \ 527 ((info)->base_addr == 0 && \ 528 (info)->limit == 0 && \ 529 (info)->contents == 0 && \ 530 (info)->seg_not_present == 1 && \ 531 (info)->read_exec_only == 1 && \ 532 (info)->seg_32bit == 0 && \ 533 (info)->limit_in_pages == 0 && \ 534 (info)->useable == 0) 535 536 /* 537 * Macros for converting segments. 538 * They do the same as those in arch/i386/kernel/process.c in Linux. 539 */ 540 #define LINUX_GET_BASE(desc) \ 541 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 542 (((desc)->b << 16) & 0x00ff0000) | \ 543 ((desc)->b & 0xff000000)) 544 545 #define LINUX_GET_LIMIT(desc) \ 546 (((desc)->a & LINUX_LOWERWORD) | \ 547 ((desc)->b & 0xf0000)) 548 549 #define LINUX_GET_32BIT(desc) \ 550 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 551 #define LINUX_GET_CONTENTS(desc) \ 552 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 553 #define LINUX_GET_WRITABLE(desc) \ 554 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 555 #define LINUX_GET_LIMIT_PAGES(desc) \ 556 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 557 #define LINUX_GET_PRESENT(desc) \ 558 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 559 #define LINUX_GET_USEABLE(desc) \ 560 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 561 562 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r)) 563 564 /* robust futexes */ 565 struct linux_robust_list { 566 struct linux_robust_list *next; 567 }; 568 569 struct linux_robust_list_head { 570 struct linux_robust_list list; 571 l_long futex_offset; 572 struct linux_robust_list *pending_list; 573 }; 574 575 #endif /* !_I386_LINUX_H_ */ 576