linux/include/asm-m68k/thread_info.h
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   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
   7struct 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#define TIF_FREEZE              17      /* thread is freezing for suspend */
  56
  57#endif  /* _ASM_M68K_THREAD_INFO_H */
  58
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