1 /* $NetBSD: linux_emuldata.h,v 1.16 2008/10/26 16:38:22 christos Exp $ */
4 * Copyright (c) 1998,2002 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Eric Haszlakiewicz.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
32 #include "linux_futex.h"
38 #ifndef _SYS_MPLOCK2_H
39 #include <sys/mplock2.h>
42 #ifndef _COMMON_LINUX_EMULDATA_H
43 #define _COMMON_LINUX_EMULDATA_H
46 * This is auxillary data the linux compat code
47 * needs to do its work. A pointer to it is
48 * stored in the emuldata field of the proc
51 struct linux_emuldata_shared
{
52 void * p_break
; /* Processes' idea of break */
54 pid_t group_pid
; /* PID of Linux process (group of threads) */
55 /* List of Linux threads (NetBSD processes) in the Linux process */
56 LIST_HEAD(, linux_emuldata
) threads
;
57 int flags
; /* See below */
58 int xstat
; /* Thread group exit code, for exit_group */
61 #define LINUX_LES_INEXITGROUP 0x1 /* thread group doing exit_group() */
62 #define LINUX_LES_USE_NPTL 0x2 /* Need to emulate NPTL threads */
64 struct linux_emuldata
{
66 sigset_t ps_siginfo
; /* Which signals have a RT handler */
68 int debugreg
[8]; /* GDB information for ptrace - for use, */
69 /* see ../arch/i386/linux_ptrace.c */
70 struct linux_emuldata_shared
*s
;
72 void *parent_tidptr
; /* Used during clone() */
73 void *child_tidptr
; /* Used during clone() */
74 int clone_flags
; /* Used during clone() */
76 void *clear_tid
; /* Own TID to clear on exit */
77 void *set_tls
; /* Pointer to child TLS desc in user space */
79 struct linux_robust_list_head
*robust_futexes
;
81 /* List of Linux threads (NetBSD processes) in the Linux process */
82 LIST_ENTRY(linux_emuldata
) threads
;
83 struct proc
*proc
; /* backpointer to struct proc */
86 #define EMUL_DIDKILL 0x01
88 #define LINUX_CHILD_QUIETEXIT 0x1 /* Child will have quietexit set */
89 #define LINUX_QUIETEXIT 0x2 /* Quiet exit (no zombie state) */
91 #define EMUL_LOCKINIT(x) lockinit(&emul_lock, "tux_emul", 0, LK_CANRECURSE)
92 #define EMUL_LOCKUNINIT(x) lockuninit(&emul_lock)
95 #define EMUL_LOCK(x) lockmgr(&emul_lock, LK_EXCLUSIVE)
96 #define EMUL_UNLOCK(x) lockmgr(&emul_lock, LK_RELEASE)
99 #define EMUL_LOCK(x) get_mplock()
100 #define EMUL_UNLOCK(x) rel_mplock()
102 extern struct lock emul_lock
;
104 struct linux_emuldata
*emuldata_get(struct proc
*p
);
105 void emuldata_set_robust(struct proc
*p
, struct linux_robust_list_head
*robust_ftx
);
106 int emuldata_init(struct proc
*p
, struct proc
*pchild
, int flags
);
107 void emuldata_exit(void *unused
, struct proc
*p
);
108 void linux_proc_transition(void *unused
, struct image_params
*imgp
);
109 void linux_proc_fork(struct proc
*p
, struct proc
*parent
, void *child_tidptr
);
110 #endif /* !_COMMON_LINUX_EMULDATA_H */