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