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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_M68K_THREAD_INFO_H
3#define _ASM_M68K_THREAD_INFO_H
4
5#include <asm/types.h>
6#include <asm/page.h>
7
8/*
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).
12 */
13#if PAGE_SHIFT < 13
14#ifdef CONFIG_4KSTACKS
15#define THREAD_SIZE 4096
16#else
17#define THREAD_SIZE 8192
18#endif
19#else
20#define THREAD_SIZE PAGE_SIZE
21#endif
22#define THREAD_SIZE_ORDER ((THREAD_SIZE / PAGE_SIZE) - 1)
23
24#ifndef __ASSEMBLY__
25
26struct thread_info {
27 struct task_struct *task; /* main task structure */
28 unsigned long flags;
29 int preempt_count; /* 0 => preemptable, <0 => BUG */
30 __u32 cpu; /* should always be 0 on m68k */
31 unsigned long tp_value; /* thread pointer */
32};
33#endif /* __ASSEMBLY__ */
34
35#define INIT_THREAD_INFO(tsk) \
36{ \
37 .task = &tsk, \
38 .preempt_count = INIT_PREEMPT_COUNT, \
39}
40
41#ifndef __ASSEMBLY__
42/* how to get the thread information struct from C */
43static inline struct thread_info *current_thread_info(void)
44{
45 struct thread_info *ti;
46 __asm__(
47 "move.l %%sp, %0 \n\t"
48 "and.l %1, %0"
49 : "=&d"(ti)
50 : "di" (~(THREAD_SIZE-1))
51 );
52 return ti;
53}
54#endif
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_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_SECCOMP 13 /* seccomp syscall filtering active */
65#define TIF_DELAYED_TRACE 14 /* single step a syscall */
66#define TIF_SYSCALL_TRACE 15 /* syscall trace active */
67#define TIF_MEMDIE 16 /* is terminating due to OOM killer */
68#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal */
69
70#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
71#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
72#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
73#define _TIF_SECCOMP (1 << TIF_SECCOMP)
74#define _TIF_DELAYED_TRACE (1 << TIF_DELAYED_TRACE)
75#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
76#define _TIF_MEMDIE (1 << TIF_MEMDIE)
77#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
78
79#endif /* _ASM_M68K_THREAD_INFO_H */
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_M68K_THREAD_INFO_H
3#define _ASM_M68K_THREAD_INFO_H
4
5#include <asm/types.h>
6#include <asm/page.h>
7#include <asm/segment.h>
8
9/*
10 * On machines with 4k pages we default to an 8k thread size, though we
11 * allow a 4k with config option. Any other machine page size then
12 * the thread size must match the page size (which is 8k and larger here).
13 */
14#if PAGE_SHIFT < 13
15#ifdef CONFIG_4KSTACKS
16#define THREAD_SIZE 4096
17#else
18#define THREAD_SIZE 8192
19#endif
20#else
21#define THREAD_SIZE PAGE_SIZE
22#endif
23#define THREAD_SIZE_ORDER ((THREAD_SIZE / PAGE_SIZE) - 1)
24
25#ifndef __ASSEMBLY__
26
27struct thread_info {
28 struct task_struct *task; /* main task structure */
29 unsigned long flags;
30 mm_segment_t addr_limit; /* thread address space */
31 int preempt_count; /* 0 => preemptable, <0 => BUG */
32 __u32 cpu; /* should always be 0 on m68k */
33 unsigned long tp_value; /* thread pointer */
34};
35#endif /* __ASSEMBLY__ */
36
37#define INIT_THREAD_INFO(tsk) \
38{ \
39 .task = &tsk, \
40 .addr_limit = KERNEL_DS, \
41 .preempt_count = INIT_PREEMPT_COUNT, \
42}
43
44#ifndef __ASSEMBLY__
45/* how to get the thread information struct from C */
46static inline struct thread_info *current_thread_info(void)
47{
48 struct thread_info *ti;
49 __asm__(
50 "move.l %%sp, %0 \n\t"
51 "and.l %1, %0"
52 : "=&d"(ti)
53 : "di" (~(THREAD_SIZE-1))
54 );
55 return ti;
56}
57#endif
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_NOTIFY_SIGNAL 4
64#define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
65#define TIF_SIGPENDING 6 /* signal pending */
66#define TIF_NEED_RESCHED 7 /* rescheduling necessary */
67#define TIF_DELAYED_TRACE 14 /* single step a syscall */
68#define TIF_SYSCALL_TRACE 15 /* syscall trace active */
69#define TIF_MEMDIE 16 /* is terminating due to OOM killer */
70#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal */
71
72#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
73#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
74#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
75#define _TIF_DELAYED_TRACE (1 << TIF_DELAYED_TRACE)
76#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
77#define _TIF_MEMDIE (1 << TIF_MEMDIE)
78#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
79
80#endif /* _ASM_M68K_THREAD_INFO_H */