Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux.h
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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 * $FreeBSD$ 29 */ 30 31 #ifndef _I386_LINUX_H_ 32 #define _I386_LINUX_H_ 33 34 #include <sys/abi_compat.h> 35 #include <sys/signal.h> /* for sigval union */ 36 37 #include <compat/linux/linux.h> 38 #include <i386/linux/linux_syscall.h> 39 40 #define LINUX_LEGACY_SYSCALLS 41 42 /* 43 * debugging support 44 */ 45 extern u_char linux_debug_map[]; 46 #define ldebug(name) isclr(linux_debug_map, LINUX_SYS_linux_ ## name) 47 #define ARGS(nm, fmt) "linux(%ld/%ld): "#nm"("fmt")\n", \ 48 (long)td->td_proc->p_pid, (long)td->td_tid 49 #define LMSG(fmt) "linux(%ld/%ld): "fmt"\n", \ 50 (long)td->td_proc->p_pid, (long)td->td_tid 51 #define LINUX_DTRACE linuxulator 52 53 #define LINUX_SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 54 #define LINUX_USRSTACK LINUX_SHAREDPAGE 55 56 /* 57 * Provide a separate set of types for the Linux types. 58 */ 59 typedef int l_int; 60 typedef int32_t l_long; 61 typedef int64_t l_longlong; 62 typedef short l_short; 63 typedef unsigned int l_uint; 64 typedef uint32_t l_ulong; 65 typedef uint64_t l_ulonglong; 66 typedef unsigned short l_ushort; 67 68 typedef char *l_caddr_t; 69 typedef l_ulong l_uintptr_t; 70 typedef l_long l_clock_t; 71 typedef l_int l_daddr_t; 72 typedef l_ushort l_dev_t; 73 typedef l_uint l_gid_t; 74 typedef l_ushort l_gid16_t; 75 typedef l_ulong l_ino_t; 76 typedef l_int l_key_t; 77 typedef l_longlong l_loff_t; 78 typedef l_ushort l_mode_t; 79 typedef l_long l_off_t; 80 typedef l_int l_pid_t; 81 typedef l_uint l_size_t; 82 typedef l_long l_suseconds_t; 83 typedef l_long l_time_t; 84 typedef l_uint l_uid_t; 85 typedef l_ushort l_uid16_t; 86 typedef l_int l_timer_t; 87 typedef l_int l_mqd_t; 88 typedef l_ulong l_fd_mask; 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 20 /* Count of used aux entry types. 105 * Keep this synchronized with 106 * linux_fixup_elf() 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 struct l_mmap_argv { 139 l_uintptr_t addr; 140 l_size_t len; 141 l_int prot; 142 l_int flags; 143 l_int fd; 144 l_off_t pgoff; 145 } __packed; 146 147 /* 148 * stat family of syscalls 149 */ 150 struct l_timespec { 151 l_time_t tv_sec; 152 l_long tv_nsec; 153 }; 154 155 struct l_newstat { 156 l_ushort st_dev; 157 l_ushort __pad1; 158 l_ulong st_ino; 159 l_ushort st_mode; 160 l_ushort st_nlink; 161 l_ushort st_uid; 162 l_ushort st_gid; 163 l_ushort st_rdev; 164 l_ushort __pad2; 165 l_ulong st_size; 166 l_ulong st_blksize; 167 l_ulong st_blocks; 168 struct l_timespec st_atim; 169 struct l_timespec st_mtim; 170 struct l_timespec st_ctim; 171 l_ulong __unused4; 172 l_ulong __unused5; 173 }; 174 175 struct l_stat { 176 l_ushort st_dev; 177 l_ulong st_ino; 178 l_ushort st_mode; 179 l_ushort st_nlink; 180 l_ushort st_uid; 181 l_ushort st_gid; 182 l_ushort st_rdev; 183 l_long st_size; 184 struct l_timespec st_atim; 185 struct l_timespec st_mtim; 186 struct l_timespec st_ctim; 187 l_long st_blksize; 188 l_long st_blocks; 189 l_ulong st_flags; 190 l_ulong st_gen; 191 }; 192 193 struct l_stat64 { 194 l_ushort st_dev; 195 u_char __pad0[10]; 196 l_ulong __st_ino; 197 l_uint st_mode; 198 l_uint st_nlink; 199 l_ulong st_uid; 200 l_ulong st_gid; 201 l_ushort st_rdev; 202 u_char __pad3[10]; 203 l_longlong st_size; 204 l_ulong st_blksize; 205 l_ulong st_blocks; 206 l_ulong __pad4; 207 struct l_timespec st_atim; 208 struct l_timespec st_mtim; 209 struct l_timespec st_ctim; 210 l_ulonglong st_ino; 211 }; 212 213 struct l_statfs64 { 214 l_int f_type; 215 l_int f_bsize; 216 uint64_t f_blocks; 217 uint64_t f_bfree; 218 uint64_t f_bavail; 219 uint64_t f_files; 220 uint64_t f_ffree; 221 l_fsid_t f_fsid; 222 l_int f_namelen; 223 l_int f_frsize; 224 l_int f_flags; 225 l_int f_spare[4]; 226 }; 227 228 #define LINUX_NSIG_WORDS 2 229 230 /* sigaction flags */ 231 #define LINUX_SA_NOCLDSTOP 0x00000001 232 #define LINUX_SA_NOCLDWAIT 0x00000002 233 #define LINUX_SA_SIGINFO 0x00000004 234 #define LINUX_SA_RESTORER 0x04000000 235 #define LINUX_SA_ONSTACK 0x08000000 236 #define LINUX_SA_RESTART 0x10000000 237 #define LINUX_SA_INTERRUPT 0x20000000 238 #define LINUX_SA_NOMASK 0x40000000 239 #define LINUX_SA_ONESHOT 0x80000000 240 241 /* sigprocmask actions */ 242 #define LINUX_SIG_BLOCK 0 243 #define LINUX_SIG_UNBLOCK 1 244 #define LINUX_SIG_SETMASK 2 245 246 /* sigaltstack */ 247 #define LINUX_MINSIGSTKSZ 2048 248 249 typedef void (*l_handler_t)(l_int); 250 typedef l_ulong l_osigset_t; 251 252 typedef struct { 253 l_handler_t lsa_handler; 254 l_osigset_t lsa_mask; 255 l_ulong lsa_flags; 256 void (*lsa_restorer)(void); 257 } l_osigaction_t; 258 259 typedef struct { 260 l_handler_t lsa_handler; 261 l_ulong lsa_flags; 262 void (*lsa_restorer)(void); 263 l_sigset_t lsa_mask; 264 } l_sigaction_t; 265 266 typedef struct { 267 void *ss_sp; 268 l_int ss_flags; 269 l_size_t ss_size; 270 } l_stack_t; 271 272 /* The Linux sigcontext, pretty much a standard 386 trapframe. */ 273 struct l_sigcontext { 274 l_int sc_gs; 275 l_int sc_fs; 276 l_int sc_es; 277 l_int sc_ds; 278 l_int sc_edi; 279 l_int sc_esi; 280 l_int sc_ebp; 281 l_int sc_esp; 282 l_int sc_ebx; 283 l_int sc_edx; 284 l_int sc_ecx; 285 l_int sc_eax; 286 l_int sc_trapno; 287 l_int sc_err; 288 l_int sc_eip; 289 l_int sc_cs; 290 l_int sc_eflags; 291 l_int sc_esp_at_signal; 292 l_int sc_ss; 293 l_int sc_387; 294 l_int sc_mask; 295 l_int sc_cr2; 296 }; 297 298 struct l_ucontext { 299 l_ulong uc_flags; 300 void *uc_link; 301 l_stack_t uc_stack; 302 struct l_sigcontext uc_mcontext; 303 l_sigset_t uc_sigmask; 304 }; 305 306 #define LINUX_SI_MAX_SIZE 128 307 #define LINUX_SI_PAD_SIZE ((LINUX_SI_MAX_SIZE/sizeof(l_int)) - 3) 308 309 typedef union l_sigval { 310 l_int sival_int; 311 l_uintptr_t sival_ptr; 312 } l_sigval_t; 313 314 typedef struct l_siginfo { 315 l_int lsi_signo; 316 l_int lsi_errno; 317 l_int lsi_code; 318 union { 319 l_int _pad[LINUX_SI_PAD_SIZE]; 320 321 struct { 322 l_pid_t _pid; 323 l_uid_t _uid; 324 } _kill; 325 326 struct { 327 l_timer_t _tid; 328 l_int _overrun; 329 char _pad[sizeof(l_uid_t) - sizeof(l_int)]; 330 l_sigval_t _sigval; 331 l_int _sys_private; 332 } _timer; 333 334 struct { 335 l_pid_t _pid; /* sender's pid */ 336 l_uid_t _uid; /* sender's uid */ 337 l_sigval_t _sigval; 338 } _rt; 339 340 struct { 341 l_pid_t _pid; /* which child */ 342 l_uid_t _uid; /* sender's uid */ 343 l_int _status; /* exit code */ 344 l_clock_t _utime; 345 l_clock_t _stime; 346 } _sigchld; 347 348 struct { 349 l_uintptr_t _addr; /* Faulting insn/memory ref. */ 350 } _sigfault; 351 352 struct { 353 l_long _band; /* POLL_IN,POLL_OUT,POLL_MSG */ 354 l_int _fd; 355 } _sigpoll; 356 } _sifields; 357 } l_siginfo_t; 358 359 #define lsi_pid _sifields._kill._pid 360 #define lsi_uid _sifields._kill._uid 361 #define lsi_tid _sifields._timer._tid 362 #define lsi_overrun _sifields._timer._overrun 363 #define lsi_sys_private _sifields._timer._sys_private 364 #define lsi_status _sifields._sigchld._status 365 #define lsi_utime _sifields._sigchld._utime 366 #define lsi_stime _sifields._sigchld._stime 367 #define lsi_value _sifields._rt._sigval 368 #define lsi_int _sifields._rt._sigval.sival_int 369 #define lsi_ptr _sifields._rt._sigval.sival_ptr 370 #define lsi_addr _sifields._sigfault._addr 371 #define lsi_band _sifields._sigpoll._band 372 #define lsi_fd _sifields._sigpoll._fd 373 374 struct l_fpreg { 375 u_int16_t significand[4]; 376 u_int16_t exponent; 377 }; 378 379 struct l_fpxreg { 380 u_int16_t significand[4]; 381 u_int16_t exponent; 382 u_int16_t padding[3]; 383 }; 384 385 struct l_xmmreg { 386 u_int32_t element[4]; 387 }; 388 389 struct l_fpstate { 390 /* Regular FPU environment */ 391 u_int32_t cw; 392 u_int32_t sw; 393 u_int32_t tag; 394 u_int32_t ipoff; 395 u_int32_t cssel; 396 u_int32_t dataoff; 397 u_int32_t datasel; 398 struct l_fpreg _st[8]; 399 u_int16_t status; 400 u_int16_t magic; /* 0xffff = regular FPU data */ 401 402 /* FXSR FPU environment */ 403 u_int32_t _fxsr_env[6]; /* env is ignored. */ 404 u_int32_t mxcsr; 405 u_int32_t reserved; 406 struct l_fpxreg _fxsr_st[8]; /* reg data is ignored. */ 407 struct l_xmmreg _xmm[8]; 408 u_int32_t padding[56]; 409 }; 410 411 /* 412 * We make the stack look like Linux expects it when calling a signal 413 * handler, but use the BSD way of calling the handler and sigreturn(). 414 * This means that we need to pass the pointer to the handler too. 415 * It is appended to the frame to not interfere with the rest of it. 416 */ 417 struct l_sigframe { 418 l_int sf_sig; 419 struct l_sigcontext sf_sc; 420 struct l_fpstate sf_fpstate; 421 l_uint sf_extramask[LINUX_NSIG_WORDS-1]; 422 l_handler_t sf_handler; 423 }; 424 425 struct l_rt_sigframe { 426 l_int sf_sig; 427 l_siginfo_t *sf_siginfo; 428 struct l_ucontext *sf_ucontext; 429 l_siginfo_t sf_si; 430 struct l_ucontext sf_sc; 431 l_handler_t sf_handler; 432 }; 433 434 extern struct sysentvec linux_sysvec; 435 436 /* 437 * arch specific open/fcntl flags 438 */ 439 #define LINUX_F_GETLK64 12 440 #define LINUX_F_SETLK64 13 441 #define LINUX_F_SETLKW64 14 442 443 union l_semun { 444 l_int val; 445 l_uintptr_t buf; 446 l_ushort *array; 447 l_uintptr_t __buf; 448 l_uintptr_t __pad; 449 }; 450 451 struct l_sockaddr { 452 l_ushort sa_family; 453 char sa_data[14]; 454 }; 455 456 struct l_ifmap { 457 l_ulong mem_start; 458 l_ulong mem_end; 459 l_ushort base_addr; 460 u_char irq; 461 u_char dma; 462 u_char port; 463 }; 464 465 #define LINUX_IFHWADDRLEN 6 466 #define LINUX_IFNAMSIZ 16 467 468 struct l_ifreq { 469 union { 470 char ifrn_name[LINUX_IFNAMSIZ]; 471 } ifr_ifrn; 472 473 union { 474 struct l_sockaddr ifru_addr; 475 struct l_sockaddr ifru_dstaddr; 476 struct l_sockaddr ifru_broadaddr; 477 struct l_sockaddr ifru_netmask; 478 struct l_sockaddr ifru_hwaddr; 479 l_short ifru_flags[1]; 480 l_int ifru_ivalue; 481 l_int ifru_mtu; 482 struct l_ifmap ifru_map; 483 char ifru_slave[LINUX_IFNAMSIZ]; 484 l_caddr_t ifru_data; 485 } ifr_ifru; 486 }; 487 488 #define ifr_name ifr_ifrn.ifrn_name /* Interface name */ 489 #define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */ 490 #define ifr_ifindex ifr_ifru.ifru_ivalue /* Interface index */ 491 492 /* 493 * poll() 494 */ 495 #define LINUX_POLLIN 0x0001 496 #define LINUX_POLLPRI 0x0002 497 #define LINUX_POLLOUT 0x0004 498 #define LINUX_POLLERR 0x0008 499 #define LINUX_POLLHUP 0x0010 500 #define LINUX_POLLNVAL 0x0020 501 #define LINUX_POLLRDNORM 0x0040 502 #define LINUX_POLLRDBAND 0x0080 503 #define LINUX_POLLWRNORM 0x0100 504 #define LINUX_POLLWRBAND 0x0200 505 #define LINUX_POLLMSG 0x0400 506 507 struct l_pollfd { 508 l_int fd; 509 l_short events; 510 l_short revents; 511 }; 512 513 struct l_user_desc { 514 l_uint entry_number; 515 l_uint base_addr; 516 l_uint limit; 517 l_uint seg_32bit:1; 518 l_uint contents:2; 519 l_uint read_exec_only:1; 520 l_uint limit_in_pages:1; 521 l_uint seg_not_present:1; 522 l_uint useable:1; 523 }; 524 525 struct l_desc_struct { 526 unsigned long a, b; 527 }; 528 529 530 #define LINUX_LOWERWORD 0x0000ffff 531 532 /* 533 * Macros which does the same thing as those in Linux include/asm-um/ldt-i386.h. 534 * These convert Linux user space descriptor to machine one. 535 */ 536 #define LINUX_LDT_entry_a(info) \ 537 ((((info)->base_addr & LINUX_LOWERWORD) << 16) | \ 538 ((info)->limit & LINUX_LOWERWORD)) 539 540 #define LINUX_ENTRY_B_READ_EXEC_ONLY 9 541 #define LINUX_ENTRY_B_CONTENTS 10 542 #define LINUX_ENTRY_B_SEG_NOT_PRESENT 15 543 #define LINUX_ENTRY_B_BASE_ADDR 16 544 #define LINUX_ENTRY_B_USEABLE 20 545 #define LINUX_ENTRY_B_SEG32BIT 22 546 #define LINUX_ENTRY_B_LIMIT 23 547 548 #define LINUX_LDT_entry_b(info) \ 549 (((info)->base_addr & 0xff000000) | \ 550 ((info)->limit & 0xf0000) | \ 551 ((info)->contents << LINUX_ENTRY_B_CONTENTS) | \ 552 (((info)->seg_not_present == 0) << LINUX_ENTRY_B_SEG_NOT_PRESENT) | \ 553 (((info)->base_addr & 0x00ff0000) >> LINUX_ENTRY_B_BASE_ADDR) | \ 554 (((info)->read_exec_only == 0) << LINUX_ENTRY_B_READ_EXEC_ONLY) | \ 555 ((info)->seg_32bit << LINUX_ENTRY_B_SEG32BIT) | \ 556 ((info)->useable << LINUX_ENTRY_B_USEABLE) | \ 557 ((info)->limit_in_pages << LINUX_ENTRY_B_LIMIT) | 0x7000) 558 559 #define LINUX_LDT_empty(info) \ 560 ((info)->base_addr == 0 && \ 561 (info)->limit == 0 && \ 562 (info)->contents == 0 && \ 563 (info)->seg_not_present == 1 && \ 564 (info)->read_exec_only == 1 && \ 565 (info)->seg_32bit == 0 && \ 566 (info)->limit_in_pages == 0 && \ 567 (info)->useable == 0) 568 569 /* 570 * Macros for converting segments. 571 * They do the same as those in arch/i386/kernel/process.c in Linux. 572 */ 573 #define LINUX_GET_BASE(desc) \ 574 ((((desc)->a >> 16) & LINUX_LOWERWORD) | \ 575 (((desc)->b << 16) & 0x00ff0000) | \ 576 ((desc)->b & 0xff000000)) 577 578 #define LINUX_GET_LIMIT(desc) \ 579 (((desc)->a & LINUX_LOWERWORD) | \ 580 ((desc)->b & 0xf0000)) 581 582 #define LINUX_GET_32BIT(desc) \ 583 (((desc)->b >> LINUX_ENTRY_B_SEG32BIT) & 1) 584 #define LINUX_GET_CONTENTS(desc) \ 585 (((desc)->b >> LINUX_ENTRY_B_CONTENTS) & 3) 586 #define LINUX_GET_WRITABLE(desc) \ 587 (((desc)->b >> LINUX_ENTRY_B_READ_EXEC_ONLY) & 1) 588 #define LINUX_GET_LIMIT_PAGES(desc) \ 589 (((desc)->b >> LINUX_ENTRY_B_LIMIT) & 1) 590 #define LINUX_GET_PRESENT(desc) \ 591 (((desc)->b >> LINUX_ENTRY_B_SEG_NOT_PRESENT) & 1) 592 #define LINUX_GET_USEABLE(desc) \ 593 (((desc)->b >> LINUX_ENTRY_B_USEABLE) & 1) 594 595 #define linux_copyout_rusage(r, u) copyout(r, u, sizeof(*r)) 596 597 /* robust futexes */ 598 struct linux_robust_list { 599 struct linux_robust_list *next; 600 }; 601 602 struct linux_robust_list_head { 603 struct linux_robust_list list; 604 l_long futex_offset; 605 struct linux_robust_list *pending_list; 606 }; 607 608 #endif /* !_I386_LINUX_H_ */
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