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/signal.h> /* for sigval union */ 34 35 #include <compat/linux/linux.h> 36 #include <i386/linux/linux_syscall.h> 37 38 #define LINUX_LEGACY_SYSCALLS 39 40 /* 41 * debugging support 42 */ 43 extern u_char linux_debug_map[]; 44 #define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name) 45 #define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \ 46 (long)td->td_proc->p_pid, (long)td->td_tid 47 #define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \ 48 (long)td->td_proc->p_pid, (long)td->td_tid 49 #define LINUX_DTRACE linuxulator 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 typedef l_ulong l_fd_mask; 95 96 typedef struct { 97 l_int val[2]; 98 } l_fsid_t; 99 100 typedef struct { 101 l_time_t tv_sec; 102 l_suseconds_t tv_usec; 103 } l_timeval; 104 105 #define l_fd_set fd_set 106 107 /* 108 * Miscellaneous 109 */ 110 #define LINUX_AT_COUNT 20 /* Count of used aux entry types. 111 * Keep this synchronized with 112 * linux_fixup_elf() code. 113 */ 114 struct l___sysctl_args 115 { 116 l_int *name; 117 l_int nlen; 118 void *oldval; 119 l_size_t *oldlenp; 120 void *newval; 121 l_size_t newlen; 122 l_ulong __spare[4]; 123 }; 124 125 /* Resource limits */ 126 #define LINUX_RLIMIT_CPU 0 127 #define LINUX_RLIMIT_FSIZE 1 128 #define LINUX_RLIMIT_DATA 2 129 #define LINUX_RLIMIT_STACK 3 130 #define LINUX_RLIMIT_CORE 4 131 #define LINUX_RLIMIT_RSS 5 132 #define LINUX_RLIMIT_NPROC 6 133 #define LINUX_RLIMIT_NOFILE 7 134 #define LINUX_RLIMIT_MEMLOCK 8 135 #define LINUX_RLIMIT_AS 9 /* Address space limit */ 136 137 #define LINUX_RLIM_NLIMITS 10 138 139 struct l_rlimit { 140 l_ulong rlim_cur; 141 l_ulong rlim_max; 142 }; 143 144 struct l_mmap_argv { 145 l_uintptr_t addr; 146 l_size_t len; 147 l_int prot; 148 l_int flags; 149 l_int fd; 150 l_off_t pgoff; 151 } __packed; 152 153 /* 154 * stat family of syscalls 155 */ 156 struct l_timespec { 157 l_time_t tv_sec; 158 l_long tv_nsec; 159 }; 160 161 struct l_newstat { 162 l_ushort st_dev; 163 l_ushort __pad1; 164 l_ulong st_ino; 165 l_ushort st_mode; 166 l_ushort st_nlink; 167 l_ushort st_uid; 168 l_ushort st_gid; 169 l_ushort st_rdev; 170 l_ushort __pad2; 171 l_ulong st_size; 172 l_ulong st_blksize; 173 l_ulong st_blocks; 174 struct l_timespec st_atim; 175 struct l_timespec st_mtim; 176 struct l_timespec st_ctim; 177 l_ulong __unused4; 178 l_ulong __unused5; 179 }; 180 181 struct l_stat { 182 l_ushort st_dev; 183 l_ulong st_ino; 184 l_ushort st_mode; 185 l_ushort st_nlink; 186 l_ushort st_uid; 187 l_ushort st_gid; 188 l_ushort st_rdev; 189 l_long st_size; 190 struct l_timespec st_atim; 191 struct l_timespec st_mtim; 192 struct l_timespec st_ctim; 193 l_long st_blksize; 194 l_long st_blocks; 195 l_ulong st_flags; 196 l_ulong st_gen; 197 }; 198 199 struct l_stat64 { 200 l_ushort st_dev; 201 u_char __pad0[10]; 202 l_ulong __st_ino; 203 l_uint st_mode; 204 l_uint st_nlink; 205 l_ulong st_uid; 206 l_ulong st_gid; 207 l_ushort st_rdev; 208 u_char __pad3[10]; 209 l_longlong st_size; 210 l_ulong st_blksize; 211 l_ulong st_blocks; 212 l_ulong __pad4; 213 struct l_timespec st_atim; 214 struct l_timespec st_mtim; 215 struct l_timespec st_ctim; 216 l_ulonglong st_ino; 217 }; 218 219 struct l_statfs64 { 220 l_int f_type; 221 l_int f_bsize; 222 uint64_t f_blocks; 223 uint64_t f_bfree; 224 uint64_t f_bavail; 225 uint64_t f_files; 226 uint64_t f_ffree; 227 l_fsid_t f_fsid; 228 l_int f_namelen; 229 l_int f_frsize; 230 l_int f_flags; 231 l_int f_spare[4]; 232 }; 233 234 #define LINUX_NSIG_WORDS 2 235 236 /* sigaction flags */ 237 #define LINUX_SA_NOCLDSTOP 0x00000001 238 #define LINUX_SA_NOCLDWAIT 0x00000002 239 #define LINUX_SA_SIGINFO 0x00000004 240 #define LINUX_SA_RESTORER 0x04000000 241 #define LINUX_SA_ONSTACK 0x08000000 242 #define LINUX_SA_RESTART 0x10000000 243 #define LINUX_SA_INTERRUPT 0x20000000 244 #define LINUX_SA_NOMASK 0x40000000 245 #define LINUX_SA_ONESHOT 0x80000000 246 247 /* sigprocmask actions */ 248 #define LINUX_SIG_BLOCK 0 249 #define LINUX_SIG_UNBLOCK 1 250 #define LINUX_SIG_SETMASK 2 251 252 /* sigaltstack */ 253 #define LINUX_MINSIGSTKSZ 2048 254 255 typedef void (*l_handler_t)(l_int); 256 typedef l_ulong l_osigset_t; 257 258 typedef struct { 259 l_handler_t lsa_handler; 260 l_osigset_t lsa_mask; 261 l_ulong lsa_flags; 262 void (*lsa_restorer)(void); 263 } l_osigaction_t; 264 265 typedef struct { 266 l_handler_t lsa_handler; 267 l_ulong lsa_flags; 268 void (*lsa_restorer)(void); 269 l_sigset_t lsa_mask; 270 } l_sigaction_t; 271 272 typedef struct { 273 void *ss_sp; 274 l_int ss_flags; 275 l_size_t ss_size; 276 } l_stack_t; 277 278 /* The Linux sigcontext, pretty much a standard 386 trapframe. */ 279 struct l_sigcontext { 280 l_int sc_gs; 281 l_int sc_fs; 282 l_int sc_es; 283 l_int sc_ds; 284 l_int sc_edi; 285 l_int sc_esi; 286 l_int sc_ebp; 287 l_int sc_esp; 288 l_int sc_ebx; 289 l_int sc_edx; 290 l_int sc_ecx; 291 l_int sc_eax; 292 l_int sc_trapno; 293 l_int sc_err; 294 l_int sc_eip; 295 l_int sc_cs; 296 l_int sc_eflags; 297 l_int sc_esp_at_signal; 298 l_int sc_ss; 299 l_int sc_387; 300 l_int sc_mask; 301 l_int sc_cr2; 302 }; 303 304 struct l_ucontext { 305 l_ulong uc_flags; 306 void *uc_link; 307 l_stack_t uc_stack; 308 struct l_sigcontext uc_mcontext; 309 l_sigset_t uc_sigmask; 310 }; 311 312 #define LINUX_SI_MAX_SIZE 128 313 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 314 315 typedef union l_sigval { 316 l_int sival_int; 317 l_uintptr_t sival_ptr; 318 } l_sigval_t; 319 320 typedef struct l_siginfo { 321 l_int lsi_signo; 322 l_int lsi_errno; 323 l_int lsi_code; 324 union { 325 l_int _pad[LINUX_SI_PAD_SIZE]; 326 327 struct { 328 l_pid_t _pid; 329 l_uid_t _uid; 330 } _kill; 331 332 struct { 333 l_timer_t _tid; 334 l_int _overrun; 335 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 336 l_sigval_t _sigval; 337 l_int _sys_private; 338 } _timer; 339 340 struct { 341 l_pid_t _pid; /* sender's pid */ 342 l_uid_t _uid; /* sender's uid */ 343 l_sigval_t _sigval; 344 } _rt; 345 346 struct { 347 l_pid_t _pid; /* which child */ 348 l_uid_t _uid; /* sender's uid */ 349 l_int _status; /* exit code */ 350 l_clock_t _utime; 351 l_clock_t _stime; 352 } _sigchld; 353 354 struct { 355 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 356 } _sigfault; 357 358 struct { 359 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 360 l_int _fd; 361 } _sigpoll; 362 } _sifields; 363 } l_siginfo_t; 364 365 #define lsi_pid _sifields._kill._pid 366 #define lsi_uid _sifields._kill._uid 367 #define lsi_tid _sifields._timer._tid 368 #define lsi_overrun _sifields._timer._overrun 369 #define lsi_sys_private _sifields._timer._sys_private 370 #define lsi_status _sifields._sigchld._status 371 #define lsi_utime _sifields._sigchld._utime 372 #define lsi_stime _sifields._sigchld._stime 373 #define lsi_value _sifields._rt._sigval 374 #define lsi_int _sifields._rt._sigval.sival_int 375 #define lsi_ptr _sifields._rt._sigval.sival_ptr 376 #define lsi_addr _sifields._sigfault._addr 377 #define lsi_band _sifields._sigpoll._band 378 #define lsi_fd _sifields._sigpoll._fd 379 380 struct l_fpreg { 381 u_int16_t significand[4]; 382 u_int16_t exponent; 383 }; 384 385 struct l_fpxreg { 386 u_int16_t significand[4]; 387 u_int16_t exponent; 388 u_int16_t padding[3]; 389 }; 390 391 struct l_xmmreg { 392 u_int32_t element[4]; 393 }; 394 395 struct l_fpstate { 396 /* Regular FPU environment */ 397 u_int32_t cw; 398 u_int32_t sw; 399 u_int32_t tag; 400 u_int32_t ipoff; 401 u_int32_t cssel; 402 u_int32_t dataoff; 403 u_int32_t datasel; 404 struct l_fpreg _st[8]; 405 u_int16_t status; 406 u_int16_t magic; /* 0xffff = regular FPU data */ 407 408 /* FXSR FPU environment */ 409 u_int32_t _fxsr_env[6]; /* env is ignored. */ 410 u_int32_t mxcsr; 411 u_int32_t reserved; 412 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 413 struct l_xmmreg _xmm[8]; 414 u_int32_t padding[56]; 415 }; 416 417 /* 418 * We make the stack look like Linux expects it when calling a signal 419 * handler, but use the BSD way of calling the handler and sigreturn(). 420 * This means that we need to pass the pointer to the handler too. 421 * It is appended to the frame to not interfere with the rest of it. 422 */ 423 struct l_sigframe { 424 l_int sf_sig; 425 struct l_sigcontext sf_sc; 426 struct l_fpstate sf_fpstate; 427 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 428 l_handler_t sf_handler; 429 }; 430 431 struct l_rt_sigframe { 432 l_int sf_sig; 433 l_siginfo_t *sf_siginfo; 434 struct l_ucontext *sf_ucontext; 435 l_siginfo_t sf_si; 436 struct l_ucontext sf_sc; 437 l_handler_t sf_handler; 438 }; 439 440 extern struct sysentvec linux_sysvec; 441 442 /* 443 * arch specific open/fcntl flags 444 */ 445 #define LINUX_F_GETLK64 12 446 #define LINUX_F_SETLK64 13 447 #define LINUX_F_SETLKW64 14 448 449 union l_semun { 450 l_int val; 451 l_uintptr_t buf; 452 l_ushort *array; 453 l_uintptr_t __buf; 454 l_uintptr_t __pad; 455 }; 456 457 struct l_sockaddr { 458 l_ushort sa_family; 459 char sa_data[14]; 460 }; 461 462 struct l_ifmap { 463 l_ulong mem_start; 464 l_ulong mem_end; 465 l_ushort base_addr; 466 u_char irq; 467 u_char dma; 468 u_char port; 469 }; 470 471 #define LINUX_IFHWADDRLEN 6 472 #define LINUX_IFNAMSIZ 16 473 474 struct l_ifreq { 475 union { 476 char ifrn_name[LINUX_IFNAMSIZ]; 477 } ifr_ifrn; 478 479 union { 480 struct l_sockaddr ifru_addr; 481 struct l_sockaddr ifru_dstaddr; 482 struct l_sockaddr ifru_broadaddr; 483 struct l_sockaddr ifru_netmask; 484 struct l_sockaddr ifru_hwaddr; 485 l_short ifru_flags[1]; 486 l_int ifru_ivalue; 487 l_int ifru_mtu; 488 struct l_ifmap ifru_map; 489 char ifru_slave[LINUX_IFNAMSIZ]; 490 l_caddr_t ifru_data; 491 } ifr_ifru; 492 }; 493 494 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 495 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 496 #define ifr_ifindex ifr_ifru.ifru_ivalue /* Interface index */ 497 498 /* 499 * poll() 500 */ 501 #define LINUX_POLLIN 0x0001 502 #define LINUX_POLLPRI 0x0002 503 #define LINUX_POLLOUT 0x0004 504 #define LINUX_POLLERR 0x0008 505 #define LINUX_POLLHUP 0x0010 506 #define LINUX_POLLNVAL 0x0020 507 #define LINUX_POLLRDNORM 0x0040 508 #define LINUX_POLLRDBAND 0x0080 509 #define LINUX_POLLWRNORM 0x0100 510 #define LINUX_POLLWRBAND 0x0200 511 #define LINUX_POLLMSG 0x0400 512 513 struct l_pollfd { 514 l_int fd; 515 l_short events; 516 l_short revents; 517 }; 518 519 struct l_user_desc { 520 l_uint entry_number; 521 l_uint base_addr; 522 l_uint limit; 523 l_uint seg_32bit:1; 524 l_uint contents:2; 525 l_uint read_exec_only:1; 526 l_uint limit_in_pages:1; 527 l_uint seg_not_present:1; 528 l_uint useable:1; 529 }; 530 531 struct l_desc_struct { 532 unsigned long a, b; 533 }; 534 535 536 #define LINUX_LOWERWORD 0x0000ffff 537 538 /* 539 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 540 * These convert Linux user space descriptor to machine one. 541 */ 542 #define LINUX_LDT_entry_a(info) \ 543 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 544 ((info)->limit & LINUX_LOWERWORD)) 545 546 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9 547 #define LINUX_ENTRY_B_CONTENTS 10 548 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 549 #define LINUX_ENTRY_B_BASE_ADDR 16 550 #define LINUX_ENTRY_B_USEABLE 20 551 #define LINUX_ENTRY_B_SEG32BIT 22 552 #define LINUX_ENTRY_B_LIMIT 23 553 554 #define LINUX_LDT_entry_b(info) \ 555 (((info)->base_addr & 0xff000000) | \ 556 ((info)->limit & 0xf0000) | \ 557 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 558 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 559 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 560 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 561 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 562 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 563 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 564 565 #define LINUX_LDT_empty(info) \ 566 ((info)->base_addr == 0 && \ 567 (info)->limit == 0 && \ 568 (info)->contents == 0 && \ 569 (info)->seg_not_present == 1 && \ 570 (info)->read_exec_only == 1 && \ 571 (info)->seg_32bit == 0 && \ 572 (info)->limit_in_pages == 0 && \ 573 (info)->useable == 0) 574 575 /* 576 * Macros for converting segments. 577 * They do the same as those in arch/i386/kernel/process.c in Linux. 578 */ 579 #define LINUX_GET_BASE(desc) \ 580 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 581 (((desc)->b << 16) & 0x00ff0000) | \ 582 ((desc)->b & 0xff000000)) 583 584 #define LINUX_GET_LIMIT(desc) \ 585 (((desc)->a & LINUX_LOWERWORD) | \ 586 ((desc)->b & 0xf0000)) 587 588 #define LINUX_GET_32BIT(desc) \ 589 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 590 #define LINUX_GET_CONTENTS(desc) \ 591 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 592 #define LINUX_GET_WRITABLE(desc) \ 593 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 594 #define LINUX_GET_LIMIT_PAGES(desc) \ 595 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 596 #define LINUX_GET_PRESENT(desc) \ 597 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 598 #define LINUX_GET_USEABLE(desc) \ 599 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 600 601 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r)) 602 603 /* robust futexes */ 604 struct linux_robust_list { 605 struct linux_robust_list *next; 606 }; 607 608 struct linux_robust_list_head { 609 struct linux_robust_list list; 610 l_long futex_offset; 611 struct linux_robust_list *pending_list; 612 }; 613 614 #endif /* !_I386_LINUX_H_ */ 615