abc002798a2b07a9fcb502ab0f93c1c7f502ef50
[linux-2.6.git] / include / asm-m68k / thread_info.h
1 #ifndef _ASM_M68K_THREAD_INFO_H
2 #define _ASM_M68K_THREAD_INFO_H
3
4 #include <asm/types.h>
5 #include <asm/page.h>
6
7 struct thread_info {
8         struct task_struct      *task;          /* main task structure */
9         unsigned long           flags;
10         struct exec_domain      *exec_domain;   /* execution domain */
11         int                     preempt_count;  /* 0 => preemptable, <0 => BUG */
12         __u32 cpu; /* should always be 0 on m68k */
13         struct restart_block    restart_block;
14 };
15
16 #define PREEMPT_ACTIVE          0x4000000
17
18 #define INIT_THREAD_INFO(tsk)                   \
19 {                                               \
20         .task           = &tsk,                 \
21         .exec_domain    = &default_exec_domain, \
22         .restart_block = {                      \
23                 .fn = do_no_restart_syscall,    \
24         },                                      \
25 }
26
27 /* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
28 #define THREAD_SIZE_ORDER (13 - PAGE_SHIFT)
29
30 #define init_thread_info        (init_task.thread.info)
31 #define init_stack              (init_thread_union.stack)
32
33 #define task_thread_info(tsk)   (&(tsk)->thread.info)
34 #define task_stack_page(tsk)    ((tsk)->stack)
35 #define current_thread_info()   task_thread_info(current)
36
37 #define __HAVE_THREAD_FUNCTIONS
38
39 #define setup_thread_stack(p, org) ({                   \
40         *(struct task_struct **)(p)->stack = (p);       \
41         task_thread_info(p)->task = (p);                \
42 })
43
44 #define end_of_stack(p) ((unsigned long *)(p)->stack + 1)
45
46 /* entry.S relies on these definitions!
47  * bits 0-7 are tested at every exception exit
48  * bits 8-15 are also tested at syscall exit
49  */
50 #define TIF_SIGPENDING          6       /* signal pending */
51 #define TIF_NEED_RESCHED        7       /* rescheduling necessary */
52 #define TIF_DELAYED_TRACE       14      /* single step a syscall */
53 #define TIF_SYSCALL_TRACE       15      /* syscall trace active */
54 #define TIF_MEMDIE              16
55
56 #endif  /* _ASM_M68K_THREAD_INFO_H */