release/src-rt-6.x.4708/linux/linux-2.6.36/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/types.h>
   8 #include <asm/page.h>
   9
  10 #ifndef __ASSEMBLY__
  11 #include <asm/current.h>
  12
  13 struct thread_info {
  14         struct task_struct      *task;          /* main task structure */
  15         unsigned long           flags;
  16         struct exec_domain      *exec_domain;   /* execution domain */
  17         int                     preempt_count;  /* 0 => preemptable, <0 => BUG */
  18         __u32 cpu; /* should always be 0 on m68k */
  19         unsigned long           tp_value;       /* thread pointer */
  20         struct restart_block    restart_block;
  21 };
  22 #endif /* __ASSEMBLY__ */
  23
  24 #define PREEMPT_ACTIVE          0x4000000
  25
  26 #define INIT_THREAD_INFO(tsk)                   \
  27 {                                               \
  28         .task           = &tsk,                 \
  29         .exec_domain    = &default_exec_domain, \
  30         .preempt_count  = INIT_PREEMPT_COUNT,   \
  31         .restart_block = {                      \
  32                 .fn = do_no_restart_syscall,    \
  33         },                                      \
  34 }
  35
  36 /* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
  37 #define THREAD_SIZE_ORDER (13 - PAGE_SHIFT)
  38
  39 #define init_thread_info        (init_task.thread.info)
  40 #define init_stack              (init_thread_union.stack)
  41
  42 #ifdef ASM_OFFSETS_C
  43 #define task_thread_info(tsk)   ((struct thread_info *) NULL)
  44 #else
  45 #define task_thread_info(tsk)   ((struct thread_info *)((char *)tsk+TASK_TINFO))
  46 #endif
  47
  48 #define task_stack_page(tsk)    ((tsk)->stack)
  49 #define current_thread_info()   task_thread_info(current)
  50
  51 #define __HAVE_THREAD_FUNCTIONS
  52
  53 #define setup_thread_stack(p, org) ({                   \
  54         *(struct task_struct **)(p)->stack = (p);       \
  55         task_thread_info(p)->task = (p);                \
  56 })
  57
  58 #define end_of_stack(p) ((unsigned long *)(p)->stack + 1)
  59
  60 /* entry.S relies on these definitions!
  61  * bits 0-7 are tested at every exception exit
  62  * bits 8-15 are also tested at syscall exit
  63  */
  64 #define TIF_SIGPENDING          6       /* signal pending */
  65 #define TIF_NEED_RESCHED        7       /* rescheduling necessary */
  66 #define TIF_DELAYED_TRACE       14      /* single step a syscall */
  67 #define TIF_SYSCALL_TRACE       15      /* syscall trace active */
  68 #define TIF_MEMDIE              16      /* is terminating due to OOM killer */
  69 #define TIF_FREEZE              17      /* thread is freezing for suspend */
  70
  71 #endif  /* _ASM_M68K_THREAD_INFO_H */