1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 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 * in this position and unchanged. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 #ifndef _I386_LINUX_H_ 34 #define _I386_LINUX_H_ 35 36 #include <sys/signal.h> /* for sigval union */ 37 38 #include <compat/linux/linux.h> 39 #include <i386/linux/linux_syscall.h> 40 41 /* 42 * debugging support 43 */ 44 extern u_char linux_debug_map[]; 45 #define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name) 46 #define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \ 47 (long)td->td_proc->p_pid, (long)td->td_tid 48 #define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \ 49 (long)td->td_proc->p_pid, (long)td->td_tid 50 #define LINUX_DTRACE linuxulator 51 52 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 53 #define LINUX_USRSTACK LINUX_SHAREDPAGE 54 55 #define PTRIN(v) (void *)(v) 56 #define PTROUT(v) (l_uintptr_t)(v) 57 58 #define CP(src,dst,fld) do { (dst).fld = (src).fld; } while (0) 59 #define CP2(src,dst,sfld,dfld) do { (dst).dfld = (src).sfld; } while (0) 60 #define PTRIN_CP(src,dst,fld) \ 61 do { (dst).fld = PTRIN((src).fld); } while (0) 62 63 /* 64 * Provide a separate set of types for the Linux types. 65 */ 66 typedef int l_int; 67 typedef int32_t l_long; 68 typedef int64_t l_longlong; 69 typedef short l_short; 70 typedef unsigned int l_uint; 71 typedef uint32_t l_ulong; 72 typedef uint64_t l_ulonglong; 73 typedef unsigned short l_ushort; 74 75 typedef char *l_caddr_t; 76 typedef l_ulong l_uintptr_t; 77 typedef l_long l_clock_t; 78 typedef l_int l_daddr_t; 79 typedef l_ushort l_dev_t; 80 typedef l_uint l_gid_t; 81 typedef l_ushort l_gid16_t; 82 typedef l_ulong l_ino_t; 83 typedef l_int l_key_t; 84 typedef l_longlong l_loff_t; 85 typedef l_ushort l_mode_t; 86 typedef l_long l_off_t; 87 typedef l_int l_pid_t; 88 typedef l_uint l_size_t; 89 typedef l_long l_suseconds_t; 90 typedef l_long l_time_t; 91 typedef l_uint l_uid_t; 92 typedef l_ushort l_uid16_t; 93 typedef l_int l_timer_t; 94 typedef l_int l_mqd_t; 95 typedef l_ulong l_fd_mask; 96 97 typedef struct { 98 l_int val[2]; 99 } l_fsid_t; 100 101 typedef struct { 102 l_time_t tv_sec; 103 l_suseconds_t tv_usec; 104 } l_timeval; 105 106 #define l_fd_set fd_set 107 108 /* 109 * Miscellaneous 110 */ 111 #define LINUX_AT_COUNT 20 /* Count of used aux entry types. 112 * Keep this synchronized with 113 * elf_linux_fixup() code. 114 */ 115 struct l___sysctl_args 116 { 117 l_int *name; 118 l_int nlen; 119 void *oldval; 120 l_size_t *oldlenp; 121 void *newval; 122 l_size_t newlen; 123 l_ulong __spare[4]; 124 }; 125 126 /* Resource limits */ 127 #define LINUX_RLIMIT_CPU 0 128 #define LINUX_RLIMIT_FSIZE 1 129 #define LINUX_RLIMIT_DATA 2 130 #define LINUX_RLIMIT_STACK 3 131 #define LINUX_RLIMIT_CORE 4 132 #define LINUX_RLIMIT_RSS 5 133 #define LINUX_RLIMIT_NPROC 6 134 #define LINUX_RLIMIT_NOFILE 7 135 #define LINUX_RLIMIT_MEMLOCK 8 136 #define LINUX_RLIMIT_AS 9 /* Address space limit */ 137 138 #define LINUX_RLIM_NLIMITS 10 139 140 struct l_rlimit { 141 l_ulong rlim_cur; 142 l_ulong rlim_max; 143 }; 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_frsize; 231 l_int f_flags; 232 l_int f_spare[4]; 233 }; 234 235 #define LINUX_NSIG_WORDS 2 236 237 /* sigaction flags */ 238 #define LINUX_SA_NOCLDSTOP 0x00000001 239 #define LINUX_SA_NOCLDWAIT 0x00000002 240 #define LINUX_SA_SIGINFO 0x00000004 241 #define LINUX_SA_RESTORER 0x04000000 242 #define LINUX_SA_ONSTACK 0x08000000 243 #define LINUX_SA_RESTART 0x10000000 244 #define LINUX_SA_INTERRUPT 0x20000000 245 #define LINUX_SA_NOMASK 0x40000000 246 #define LINUX_SA_ONESHOT 0x80000000 247 248 /* sigprocmask actions */ 249 #define LINUX_SIG_BLOCK 0 250 #define LINUX_SIG_UNBLOCK 1 251 #define LINUX_SIG_SETMASK 2 252 253 /* sigaltstack */ 254 #define LINUX_MINSIGSTKSZ 2048 255 256 typedef void (*l_handler_t)(l_int); 257 typedef l_ulong l_osigset_t; 258 259 typedef struct { 260 l_handler_t lsa_handler; 261 l_osigset_t lsa_mask; 262 l_ulong lsa_flags; 263 void (*lsa_restorer)(void); 264 } l_osigaction_t; 265 266 typedef struct { 267 l_handler_t lsa_handler; 268 l_ulong lsa_flags; 269 void (*lsa_restorer)(void); 270 l_sigset_t lsa_mask; 271 } l_sigaction_t; 272 273 typedef struct { 274 void *ss_sp; 275 l_int ss_flags; 276 l_size_t ss_size; 277 } l_stack_t; 278 279 /* The Linux sigcontext, pretty much a standard 386 trapframe. */ 280 struct l_sigcontext { 281 l_int sc_gs; 282 l_int sc_fs; 283 l_int sc_es; 284 l_int sc_ds; 285 l_int sc_edi; 286 l_int sc_esi; 287 l_int sc_ebp; 288 l_int sc_esp; 289 l_int sc_ebx; 290 l_int sc_edx; 291 l_int sc_ecx; 292 l_int sc_eax; 293 l_int sc_trapno; 294 l_int sc_err; 295 l_int sc_eip; 296 l_int sc_cs; 297 l_int sc_eflags; 298 l_int sc_esp_at_signal; 299 l_int sc_ss; 300 l_int sc_387; 301 l_int sc_mask; 302 l_int sc_cr2; 303 }; 304 305 struct l_ucontext { 306 l_ulong uc_flags; 307 void *uc_link; 308 l_stack_t uc_stack; 309 struct l_sigcontext uc_mcontext; 310 l_sigset_t uc_sigmask; 311 }; 312 313 #define LINUX_SI_MAX_SIZE 128 314 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 315 316 typedef union l_sigval { 317 l_int sival_int; 318 l_uintptr_t sival_ptr; 319 } l_sigval_t; 320 321 typedef struct l_siginfo { 322 l_int lsi_signo; 323 l_int lsi_errno; 324 l_int lsi_code; 325 union { 326 l_int _pad[LINUX_SI_PAD_SIZE]; 327 328 struct { 329 l_pid_t _pid; 330 l_uid_t _uid; 331 } _kill; 332 333 struct { 334 l_timer_t _tid; 335 l_int _overrun; 336 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 337 l_sigval_t _sigval; 338 l_int _sys_private; 339 } _timer; 340 341 struct { 342 l_pid_t _pid; /* sender's pid */ 343 l_uid_t _uid; /* sender's uid */ 344 l_sigval_t _sigval; 345 } _rt; 346 347 struct { 348 l_pid_t _pid; /* which child */ 349 l_uid_t _uid; /* sender's uid */ 350 l_int _status; /* exit code */ 351 l_clock_t _utime; 352 l_clock_t _stime; 353 } _sigchld; 354 355 struct { 356 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 357 } _sigfault; 358 359 struct { 360 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 361 l_int _fd; 362 } _sigpoll; 363 } _sifields; 364 } l_siginfo_t; 365 366 #define lsi_pid _sifields._kill._pid 367 #define lsi_uid _sifields._kill._uid 368 #define lsi_tid _sifields._timer._tid 369 #define lsi_overrun _sifields._timer._overrun 370 #define lsi_sys_private _sifields._timer._sys_private 371 #define lsi_status _sifields._sigchld._status 372 #define lsi_utime _sifields._sigchld._utime 373 #define lsi_stime _sifields._sigchld._stime 374 #define lsi_value _sifields._rt._sigval 375 #define lsi_int _sifields._rt._sigval.sival_int 376 #define lsi_ptr _sifields._rt._sigval.sival_ptr 377 #define lsi_addr _sifields._sigfault._addr 378 #define lsi_band _sifields._sigpoll._band 379 #define lsi_fd _sifields._sigpoll._fd 380 381 struct l_fpreg { 382 u_int16_t significand[4]; 383 u_int16_t exponent; 384 }; 385 386 struct l_fpxreg { 387 u_int16_t significand[4]; 388 u_int16_t exponent; 389 u_int16_t padding[3]; 390 }; 391 392 struct l_xmmreg { 393 u_int32_t element[4]; 394 }; 395 396 struct l_fpstate { 397 /* Regular FPU environment */ 398 u_int32_t cw; 399 u_int32_t sw; 400 u_int32_t tag; 401 u_int32_t ipoff; 402 u_int32_t cssel; 403 u_int32_t dataoff; 404 u_int32_t datasel; 405 struct l_fpreg _st[8]; 406 u_int16_t status; 407 u_int16_t magic; /* 0xffff = regular FPU data */ 408 409 /* FXSR FPU environment */ 410 u_int32_t _fxsr_env[6]; /* env is ignored. */ 411 u_int32_t mxcsr; 412 u_int32_t reserved; 413 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 414 struct l_xmmreg _xmm[8]; 415 u_int32_t padding[56]; 416 }; 417 418 /* 419 * We make the stack look like Linux expects it when calling a signal 420 * handler, but use the BSD way of calling the handler and sigreturn(). 421 * This means that we need to pass the pointer to the handler too. 422 * It is appended to the frame to not interfere with the rest of it. 423 */ 424 struct l_sigframe { 425 l_int sf_sig; 426 struct l_sigcontext sf_sc; 427 struct l_fpstate sf_fpstate; 428 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 429 l_handler_t sf_handler; 430 }; 431 432 struct l_rt_sigframe { 433 l_int sf_sig; 434 l_siginfo_t *sf_siginfo; 435 struct l_ucontext *sf_ucontext; 436 l_siginfo_t sf_si; 437 struct l_ucontext sf_sc; 438 l_handler_t sf_handler; 439 }; 440 441 extern struct sysentvec linux_sysvec; 442 443 /* 444 * arch specific open/fcntl flags 445 */ 446 #define LINUX_F_GETLK64 12 447 #define LINUX_F_SETLK64 13 448 #define LINUX_F_SETLKW64 14 449 450 union l_semun { 451 l_int val; 452 struct l_semid_ds *buf; 453 l_ushort *array; 454 struct l_seminfo *__buf; 455 void *__pad; 456 }; 457 458 struct l_sockaddr { 459 l_ushort sa_family; 460 char sa_data[14]; 461 }; 462 463 struct l_ifmap { 464 l_ulong mem_start; 465 l_ulong mem_end; 466 l_ushort base_addr; 467 u_char irq; 468 u_char dma; 469 u_char port; 470 }; 471 472 #define LINUX_IFHWADDRLEN 6 473 #define LINUX_IFNAMSIZ 16 474 475 struct l_ifreq { 476 union { 477 char ifrn_name[LINUX_IFNAMSIZ]; 478 } ifr_ifrn; 479 480 union { 481 struct l_sockaddr ifru_addr; 482 struct l_sockaddr ifru_dstaddr; 483 struct l_sockaddr ifru_broadaddr; 484 struct l_sockaddr ifru_netmask; 485 struct l_sockaddr ifru_hwaddr; 486 l_short ifru_flags[1]; 487 l_int ifru_ivalue; 488 l_int ifru_mtu; 489 struct l_ifmap ifru_map; 490 char ifru_slave[LINUX_IFNAMSIZ]; 491 l_caddr_t ifru_data; 492 } ifr_ifru; 493 }; 494 495 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 496 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 497 #define ifr_ifindex ifr_ifru.ifru_ivalue /* Interface index */ 498 499 /* 500 * poll() 501 */ 502 #define LINUX_POLLIN 0x0001 503 #define LINUX_POLLPRI 0x0002 504 #define LINUX_POLLOUT 0x0004 505 #define LINUX_POLLERR 0x0008 506 #define LINUX_POLLHUP 0x0010 507 #define LINUX_POLLNVAL 0x0020 508 #define LINUX_POLLRDNORM 0x0040 509 #define LINUX_POLLRDBAND 0x0080 510 #define LINUX_POLLWRNORM 0x0100 511 #define LINUX_POLLWRBAND 0x0200 512 #define LINUX_POLLMSG 0x0400 513 514 struct l_pollfd { 515 l_int fd; 516 l_short events; 517 l_short revents; 518 }; 519 520 struct l_user_desc { 521 l_uint entry_number; 522 l_uint base_addr; 523 l_uint limit; 524 l_uint seg_32bit:1; 525 l_uint contents:2; 526 l_uint read_exec_only:1; 527 l_uint limit_in_pages:1; 528 l_uint seg_not_present:1; 529 l_uint useable:1; 530 }; 531 532 struct l_desc_struct { 533 unsigned long a, b; 534 }; 535 536 537 #define LINUX_LOWERWORD 0x0000ffff 538 539 /* 540 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 541 * These convert Linux user space descriptor to machine one. 542 */ 543 #define LINUX_LDT_entry_a(info) \ 544 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 545 ((info)->limit & LINUX_LOWERWORD)) 546 547 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9 548 #define LINUX_ENTRY_B_CONTENTS 10 549 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 550 #define LINUX_ENTRY_B_BASE_ADDR 16 551 #define LINUX_ENTRY_B_USEABLE 20 552 #define LINUX_ENTRY_B_SEG32BIT 22 553 #define LINUX_ENTRY_B_LIMIT 23 554 555 #define LINUX_LDT_entry_b(info) \ 556 (((info)->base_addr & 0xff000000) | \ 557 ((info)->limit & 0xf0000) | \ 558 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 559 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 560 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 561 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 562 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 563 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 564 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 565 566 #define LINUX_LDT_empty(info) \ 567 ((info)->base_addr == 0 && \ 568 (info)->limit == 0 && \ 569 (info)->contents == 0 && \ 570 (info)->seg_not_present == 1 && \ 571 (info)->read_exec_only == 1 && \ 572 (info)->seg_32bit == 0 && \ 573 (info)->limit_in_pages == 0 && \ 574 (info)->useable == 0) 575 576 /* 577 * Macros for converting segments. 578 * They do the same as those in arch/i386/kernel/process.c in Linux. 579 */ 580 #define LINUX_GET_BASE(desc) \ 581 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 582 (((desc)->b << 16) & 0x00ff0000) | \ 583 ((desc)->b & 0xff000000)) 584 585 #define LINUX_GET_LIMIT(desc) \ 586 (((desc)->a & LINUX_LOWERWORD) | \ 587 ((desc)->b & 0xf0000)) 588 589 #define LINUX_GET_32BIT(desc) \ 590 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 591 #define LINUX_GET_CONTENTS(desc) \ 592 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 593 #define LINUX_GET_WRITABLE(desc) \ 594 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 595 #define LINUX_GET_LIMIT_PAGES(desc) \ 596 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 597 #define LINUX_GET_PRESENT(desc) \ 598 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 599 #define LINUX_GET_USEABLE(desc) \ 600 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 601 602 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r)) 603 604 /* robust futexes */ 605 struct linux_robust_list { 606 struct linux_robust_list *next; 607 }; 608 609 struct linux_robust_list_head { 610 struct linux_robust_list list; 611 l_long futex_offset; 612 struct linux_robust_list *pending_list; 613 }; 614 615 #endif /* !_I386_LINUX_H_ */ 616