1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_M68K_THREAD_INFO_H
3 #define _ASM_M68K_THREAD_INFO_H
9 * On machines with 4k pages we default to an 8k thread size, though we
10 * allow a 4k with config option. Any other machine page size then
11 * the thread size must match the page size (which is 8k and larger here).
14 #ifdef CONFIG_4KSTACKS
15 #define THREAD_SIZE 4096
17 #define THREAD_SIZE 8192
20 #define THREAD_SIZE PAGE_SIZE
22 #define THREAD_SIZE_ORDER ((THREAD_SIZE / PAGE_SIZE) - 1)
27 struct task_struct *task; /* main task structure */
29 int preempt_count; /* 0 => preemptable, <0 => BUG */
30 __u32 cpu; /* should always be 0 on m68k */
31 unsigned long tp_value; /* thread pointer */
33 #endif /* __ASSEMBLY__ */
35 #define INIT_THREAD_INFO(tsk) \
38 .preempt_count = INIT_PREEMPT_COUNT, \
42 /* how to get the thread information struct from C */
43 static inline struct thread_info *current_thread_info(void)
45 struct thread_info *ti;
47 "move.l %%sp, %0 \n\t"
50 : "di" (~(THREAD_SIZE-1))
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
60 #define TIF_NOTIFY_SIGNAL 4
61 #define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
62 #define TIF_SIGPENDING 6 /* signal pending */
63 #define TIF_NEED_RESCHED 7 /* rescheduling necessary */
64 #define TIF_DELAYED_TRACE 14 /* single step a syscall */
65 #define TIF_SYSCALL_TRACE 15 /* syscall trace active */
66 #define TIF_MEMDIE 16 /* is terminating due to OOM killer */
67 #define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal */
69 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
70 #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
71 #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
72 #define _TIF_DELAYED_TRACE (1 << TIF_DELAYED_TRACE)
73 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
74 #define _TIF_MEMDIE (1 << TIF_MEMDIE)
75 #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
77 #endif /* _ASM_M68K_THREAD_INFO_H */