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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
cddafa35 GU |
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 | |
70d830e3 | 15 | #define THREAD_SIZE_ORDER 0 |
49148020 | 16 | #else |
70d830e3 | 17 | #define THREAD_SIZE_ORDER 1 |
49148020 | 18 | #endif |
cddafa35 | 19 | #else |
70d830e3 | 20 | #define THREAD_SIZE_ORDER 0 |
cddafa35 | 21 | #endif |
70d830e3 DL |
22 | |
23 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) | |
cddafa35 GU |
24 | |
25 | #ifndef __ASSEMBLY__ | |
26 | ||
27 | struct thread_info { | |
28 | struct task_struct *task; /* main task structure */ | |
29 | unsigned long flags; | |
cddafa35 GU |
30 | int preempt_count; /* 0 => preemptable, <0 => BUG */ |
31 | __u32 cpu; /* should always be 0 on m68k */ | |
32 | unsigned long tp_value; /* thread pointer */ | |
cddafa35 GU |
33 | }; |
34 | #endif /* __ASSEMBLY__ */ | |
35 | ||
cddafa35 GU |
36 | #define INIT_THREAD_INFO(tsk) \ |
37 | { \ | |
38 | .task = &tsk, \ | |
cddafa35 | 39 | .preempt_count = INIT_PREEMPT_COUNT, \ |
cddafa35 GU |
40 | } |
41 | ||
cddafa35 GU |
42 | #ifndef __ASSEMBLY__ |
43 | /* how to get the thread information struct from C */ | |
44 | static inline struct thread_info *current_thread_info(void) | |
45 | { | |
46 | struct thread_info *ti; | |
47 | __asm__( | |
48 | "move.l %%sp, %0 \n\t" | |
49 | "and.l %1, %0" | |
50 | : "=&d"(ti) | |
51 | : "di" (~(THREAD_SIZE-1)) | |
52 | ); | |
53 | return ti; | |
54 | } | |
55 | #endif | |
56 | ||
cddafa35 GU |
57 | /* entry.S relies on these definitions! |
58 | * bits 0-7 are tested at every exception exit | |
59 | * bits 8-15 are also tested at syscall exit | |
60 | */ | |
e660653c | 61 | #define TIF_NOTIFY_SIGNAL 4 |
a54f1655 | 62 | #define TIF_NOTIFY_RESUME 5 /* callback before returning to user */ |
cddafa35 GU |
63 | #define TIF_SIGPENDING 6 /* signal pending */ |
64 | #define TIF_NEED_RESCHED 7 /* rescheduling necessary */ | |
6baaade1 | 65 | #define TIF_SECCOMP 13 /* seccomp syscall filtering active */ |
cddafa35 GU |
66 | #define TIF_DELAYED_TRACE 14 /* single step a syscall */ |
67 | #define TIF_SYSCALL_TRACE 15 /* syscall trace active */ | |
68 | #define TIF_MEMDIE 16 /* is terminating due to OOM killer */ | |
e68847fe | 69 | #define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal */ |
cddafa35 | 70 | |
62148d98 GU |
71 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) |
72 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) | |
73 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
6baaade1 | 74 | #define _TIF_SECCOMP (1 << TIF_SECCOMP) |
62148d98 GU |
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 | ||
cddafa35 | 80 | #endif /* _ASM_M68K_THREAD_INFO_H */ |