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 */