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linux_emuldata.h revision 1.13 
      1 /*	$NetBSD: linux_emuldata.h,v 1.13 2007/02/05 18:31:36 njoly 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <compat/linux/common/linux_machdep.h> /* For LINUX_NPTL */
     40 
     41 #ifndef _COMMON_LINUX_EMULDATA_H
     42 #define _COMMON_LINUX_EMULDATA_H
     43 
     44 /*
     45  * This is auxillary data the linux compat code
     46  * needs to do its work.  A pointer to it is
     47  * stored in the emuldata field of the proc
     48  * structure.
     49  */
     50 struct linux_emuldata_shared {
     51 	caddr_t	p_break;	/* Processes' idea of break */
     52 	int refs;
     53 	pid_t group_pid;	/* PID of Linux process (group of threads) */
     54 	/* List of Linux threads (NetBSD processes) in the Linux process */
     55 	LIST_HEAD(, linux_emuldata) threads;
     56 	int flags;		/* See below */
     57 	int xstat;		/* Thread group exit code, for exit_group */
     58 };
     59 
     60 #define LINUX_LES_INEXITGROUP	0x1	/* thread group doing exit_group() */
     61 #define LINUX_LES_USE_NPTL	0x2	/* Need to emulate NPTL threads */
     62 
     63 struct linux_emuldata {
     64 #if notyet
     65 	sigset_t ps_siginfo;	/* Which signals have a RT handler */
     66 #endif
     67 	int	debugreg[8];	/* GDB information for ptrace - for use, */
     68 				/* see ../arch/i386/linux_ptrace.c */
     69 	struct linux_emuldata_shared *s;
     70 #ifdef LINUX_NPTL
     71 	void *parent_tidptr;	/* Used during clone() */
     72 	void *child_tidptr;	/* Used during clone() */
     73 	int clone_flags;	/* Used during clone() */
     74 	void *clear_tid;	/* Own TID to clear on exit */
     75 	void *set_tls;		/* Pointer to child TLS desc in user space */
     76 #if 0
     77 	int *child_set_tid;	/* in clone(): Child's TID to set on clone */
     78 	int *child_clear_tid;	/* in clone(): Child's TID to clear on exit */
     79 	int *set_tid;		/* in clone(): Own TID to set on clone */
     80 	int flags;		/* See above */
     81 #endif
     82 #endif
     83 	/* List of Linux threads (NetBSD processes) in the Linux process */
     84 	LIST_ENTRY(linux_emuldata) threads;
     85 	struct proc *proc;	/* backpointer to struct proc */
     86 };
     87 
     88 #define LINUX_CHILD_QUIETEXIT	0x1	/* Child will have quietexit set */
     89 #define LINUX_QUIETEXIT		0x2	/* Quiet exit (no zombie state) */
     90 
     91 #endif /* !_COMMON_LINUX_EMULDATA_H */
     92