b6da3882be9bc8e78261648cafcd0cbb4ba0ec8c
[linux-2.6.git] / arch / m68k / include / asm / thread_info_mm.h
1 #ifndef _ASM_M68K_THREAD_INFO_H
2 #define _ASM_M68K_THREAD_INFO_H
3
4 #ifndef ASM_OFFSETS_C
5 #include <asm/asm-offsets.h>
6 #endif
7 #include <asm/current.h>
8 #include <asm/types.h>
9 #include <asm/page.h>
10
11 struct thread_info {
12         struct task_struct      *task;          /* main task structure */
13         unsigned long           flags;
14         struct exec_domain      *exec_domain;   /* execution domain */
15         int                     preempt_count;  /* 0 => preemptable, <0 => BUG */
16         __u32 cpu; /* should always be 0 on m68k */
17         struct restart_block    restart_block;
18 };
19
20 #define PREEMPT_ACTIVE          0x4000000
21
22 #define INIT_THREAD_INFO(tsk)                   \
23 {                                               \
24         .task           = &tsk,                 \
25         .exec_domain    = &default_exec_domain, \
26         .preempt_count  = INIT_PREEMPT_COUNT,   \
27         .restart_block = {                      \
28                 .fn = do_no_restart_syscall,    \
29         },                                      \
30 }
31
32 /* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
33 #define THREAD_SIZE_ORDER (13 - PAGE_SHIFT)
34
35 #define init_thread_info        (init_task.thread.info)
36 #define init_stack              (init_thread_union.stack)
37
38 #ifdef ASM_OFFSETS_C
39 #define task_thread_info(tsk)   ((struct thread_info *) NULL)
40 #else
41 #define task_thread_info(tsk)   ((struct thread_info *)((char *)tsk+TASK_TINFO))
42 #endif
43
44 #define task_stack_page(tsk)    ((tsk)->stack)
45 #define current_thread_info()   task_thread_info(current)
46
47 #define __HAVE_THREAD_FUNCTIONS
48
49 #define setup_thread_stack(p, org) ({                   \
50         *(struct task_struct **)(p)->stack = (p);       \
51         task_thread_info(p)->task = (p);                \
52 })
53
54 #define end_of_stack(p) ((unsigned long *)(p)->stack + 1)
55
56 /* entry.S relies on these definitions!
57  * bits 0-7 are tested at every exception exit
58  * bits 8-15 are also tested at syscall exit
59  */
60 #define TIF_SIGPENDING          6       /* signal pending */
61 #define TIF_NEED_RESCHED        7       /* rescheduling necessary */
62 #define TIF_DELAYED_TRACE       14      /* single step a syscall */
63 #define TIF_SYSCALL_TRACE       15      /* syscall trace active */
64 #define TIF_MEMDIE              16
65 #define TIF_FREEZE              17      /* thread is freezing for suspend */
66
67 #endif  /* _ASM_M68K_THREAD_INFO_H */