sys/compat/linux/common/linux_emuldata.h

   1 /*      $NetBSD: linux_emuldata.h,v 1.15 2008/04/28 20:23:43 martin Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1998,2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Eric Haszlakiewicz.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <compat/linux/common/linux_machdep.h> /* For LINUX_NPTL */
  33 #include <compat/linux/common/linux_futex.h>
  34
  35 #ifndef _COMMON_LINUX_EMULDATA_H
  36 #define _COMMON_LINUX_EMULDATA_H
  37
  38 /*
  39  * This is auxillary data the linux compat code
  40  * needs to do its work.  A pointer to it is
  41  * stored in the emuldata field of the proc
  42  * structure.
  43  */
  44 struct linux_emuldata_shared {
  45         void *  p_break;        /* Processes' idea of break */
  46         int refs;
  47         pid_t group_pid;        /* PID of Linux process (group of threads) */
  48         /* List of Linux threads (NetBSD processes) in the Linux process */
  49         LIST_HEAD(, linux_emuldata) threads;
  50         int flags;              /* See below */
  51         int xstat;              /* Thread group exit code, for exit_group */
  52 };
  53
  54 #define LINUX_LES_INEXITGROUP   0x1     /* thread group doing exit_group() */
  55 #define LINUX_LES_USE_NPTL      0x2     /* Need to emulate NPTL threads */
  56
  57 struct linux_emuldata {
  58 #if notyet
  59         sigset_t ps_siginfo;    /* Which signals have a RT handler */
  60 #endif
  61         int     debugreg[8];    /* GDB information for ptrace - for use, */
  62                                 /* see ../arch/i386/linux_ptrace.c */
  63         struct linux_emuldata_shared *s;
  64 #ifdef LINUX_NPTL
  65         void *parent_tidptr;    /* Used during clone() */
  66         void *child_tidptr;     /* Used during clone() */
  67         int clone_flags;        /* Used during clone() */
  68         void *clear_tid;        /* Own TID to clear on exit */
  69         void *set_tls;          /* Pointer to child TLS desc in user space */
  70 #if 0
  71         int *child_set_tid;     /* in clone(): Child's TID to set on clone */
  72         int *child_clear_tid;   /* in clone(): Child's TID to clear on exit */
  73         int *set_tid;           /* in clone(): Own TID to set on clone */
  74         int flags;              /* See above */
  75 #endif
  76 #endif
  77
  78         struct linux_robust_list_head *robust_futexes;
  79
  80         /* List of Linux threads (NetBSD processes) in the Linux process */
  81         LIST_ENTRY(linux_emuldata) threads;
  82         struct proc *proc;      /* backpointer to struct proc */
  83 };
  84
  85 #define LINUX_CHILD_QUIETEXIT   0x1     /* Child will have quietexit set */
  86 #define LINUX_QUIETEXIT         0x2     /* Quiet exit (no zombie state) */
  87
  88 #endif /* !_COMMON_LINUX_EMULDATA_H */