1 /* $NetBSD: linux_emuldata.h,v 1.16 2008/10/26 16:38:22 christos 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 */
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