The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

FreeBSD/Linux Kernel Cross Reference
sys/i386/linux/linux.h

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    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: releng/12.0/sys/i386/linux/linux.h 335201 2018-06-15 14:41:51Z emaste $
   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         struct l_semid_ds       *buf;
  452         l_ushort        *array;
  453         struct l_seminfo        *__buf;
  454         void            *__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_ */

Cache object: 39db2bac85564624ef74693d9a5d6be1


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.