root/include/asm-m68k/thread_info.h

INCLUDED FROM

#ifndef _ASM_M68K_THREAD_INFO_H
#define _ASM_M68K_THREAD_INFO_H

#include <asm/types.h>
#include <asm/page.h>

struct thread_info {
        struct task_struct      *task;          /* main task structure */
        unsigned long           flags;
        struct exec_domain      *exec_domain;   /* execution domain */
        int                     preempt_count;  /* 0 => preemptable, <0 => BUG */
        __u32 cpu; /* should always be 0 on m68k */
        struct restart_block    restart_block;
};

#define PREEMPT_ACTIVE          0x4000000

#define INIT_THREAD_INFO(tsk)                   \
{                                               \
        .task           = &tsk,                 \
        .exec_domain    = &default_exec_domain, \
        .restart_block = {                      \
                .fn = do_no_restart_syscall,    \
        },                                      \
}

/* THREAD_SIZE should be 8k, so handle differently for 4k and 8k machines */
#define THREAD_SIZE_ORDER (13 - PAGE_SHIFT)

#define init_thread_info        (init_task.thread.info)
#define init_stack              (init_thread_union.stack)

#define task_thread_info(tsk)   (&(tsk)->thread.info)
#define task_stack_page(tsk)    ((tsk)->stack)
#define current_thread_info()   task_thread_info(current)

#define __HAVE_THREAD_FUNCTIONS

#define setup_thread_stack(p, org) ({                   \
        *(struct task_struct **)(p)->stack = (p);       \
        task_thread_info(p)->task = (p);                \
})

#define end_of_stack(p) ((unsigned long *)(p)->stack + 1)

/* entry.S relies on these definitions!
 * bits 0-7 are tested at every exception exit
 * bits 8-15 are also tested at syscall exit
 */
#define TIF_SIGPENDING          6       /* signal pending */
#define TIF_NEED_RESCHED        7       /* rescheduling necessary */
#define TIF_DELAYED_TRACE       14      /* single step a syscall */
#define TIF_SYSCALL_TRACE       15      /* syscall trace active */
#define TIF_MEMDIE              16

#endif  /* _ASM_M68K_THREAD_INFO_H */