[PATCH] uml: add TIF_RESTORE_SIGMASK support
[linux-2.6.git] / include / asm-um / thread_info.h
1 /* 
2  * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
3  * Licensed under the GPL
4  */
5
6 #ifndef __UM_THREAD_INFO_H
7 #define __UM_THREAD_INFO_H
8
9 #ifndef __ASSEMBLY__
10
11 #include <linux/config.h>
12 #include <asm/processor.h>
13 #include <asm/types.h>
14
15 struct thread_info {
16         struct task_struct      *task;          /* main task structure */
17         struct exec_domain      *exec_domain;   /* execution domain */
18         unsigned long           flags;          /* low level flags */
19         __u32                   cpu;            /* current CPU */
20         int                     preempt_count;  /* 0 => preemptable,
21                                                    <0 => BUG */
22         mm_segment_t            addr_limit;     /* thread address space:
23                                                    0-0xBFFFFFFF for user
24                                                    0-0xFFFFFFFF for kernel */
25         struct restart_block    restart_block;
26 };
27
28 #define INIT_THREAD_INFO(tsk)                   \
29 {                                               \
30         task:           &tsk,                   \
31         exec_domain:    &default_exec_domain,   \
32         flags:          0,                      \
33         cpu:            0,                      \
34         preempt_count:  1,                      \
35         addr_limit:     KERNEL_DS,              \
36         restart_block:  {                       \
37                 fn:  do_no_restart_syscall,     \
38         },                                      \
39 }
40
41 #define init_thread_info        (init_thread_union.thread_info)
42 #define init_stack              (init_thread_union.stack)
43
44 #define THREAD_SIZE ((1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE)
45 /* how to get the thread information struct from C */
46 static inline struct thread_info *current_thread_info(void)
47 {
48         struct thread_info *ti;
49         unsigned long mask = THREAD_SIZE - 1;
50         ti = (struct thread_info *) (((unsigned long) &ti) & ~mask);
51         return ti;
52 }
53
54 /* thread information allocation */
55 #define alloc_thread_info(tsk) \
56         ((struct thread_info *) kmalloc(THREAD_SIZE, GFP_KERNEL))
57 #define free_thread_info(ti) kfree(ti)
58
59 #endif
60
61 #define PREEMPT_ACTIVE          0x10000000
62
63 #define TIF_SYSCALL_TRACE       0       /* syscall trace active */
64 #define TIF_SIGPENDING          1       /* signal pending */
65 #define TIF_NEED_RESCHED        2       /* rescheduling necessary */
66 #define TIF_POLLING_NRFLAG      3       /* true if poll_idle() is polling 
67                                          * TIF_NEED_RESCHED 
68                                          */
69 #define TIF_RESTART_BLOCK       4
70 #define TIF_MEMDIE              5
71 #define TIF_SYSCALL_AUDIT       6
72 #define TIF_RESTORE_SIGMASK     7
73
74 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
75 #define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
76 #define _TIF_NEED_RESCHED       (1 << TIF_NEED_RESCHED)
77 #define _TIF_POLLING_NRFLAG     (1 << TIF_POLLING_NRFLAG)
78 #define _TIF_MEMDIE             (1 << TIF_MEMDIE)
79 #define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
80 #define _TIF_RESTORE_SIGMASK    (1 << TIF_RESTORE_SIGMASK)
81
82 #endif