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1da177e4 LT |
1 | #ifndef _ASM_PARISC_THREAD_INFO_H |
2 | #define _ASM_PARISC_THREAD_INFO_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | #ifndef __ASSEMBLY__ | |
7 | #include <asm/processor.h> | |
527dcdcc | 8 | #include <asm/special_insns.h> |
1da177e4 LT |
9 | |
10 | struct thread_info { | |
11 | struct task_struct *task; /* main task structure */ | |
12 | struct exec_domain *exec_domain;/* execution domain */ | |
13 | unsigned long flags; /* thread_info flags (see TIF_*) */ | |
14 | mm_segment_t addr_limit; /* user-level address space limit */ | |
15 | __u32 cpu; /* current CPU */ | |
dcd497f9 | 16 | int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ |
1da177e4 LT |
17 | struct restart_block restart_block; |
18 | }; | |
19 | ||
20 | #define INIT_THREAD_INFO(tsk) \ | |
21 | { \ | |
22 | .task = &tsk, \ | |
23 | .exec_domain = &default_exec_domain, \ | |
24 | .flags = 0, \ | |
25 | .cpu = 0, \ | |
26 | .addr_limit = KERNEL_DS, \ | |
c99e6efe | 27 | .preempt_count = INIT_PREEMPT_COUNT, \ |
1da177e4 LT |
28 | .restart_block = { \ |
29 | .fn = do_no_restart_syscall \ | |
30 | } \ | |
31 | } | |
32 | ||
33 | #define init_thread_info (init_thread_union.thread_info) | |
34 | #define init_stack (init_thread_union.stack) | |
35 | ||
f32ed395 TA |
36 | /* how to get the thread information struct from C */ |
37 | #define current_thread_info() ((struct thread_info *)mfctl(30)) | |
38 | ||
39 | #endif /* !__ASSEMBLY */ | |
40 | ||
1da177e4 LT |
41 | /* thread information allocation */ |
42 | ||
9372450c | 43 | #define THREAD_SIZE_ORDER 2 /* PA-RISC requires at least 16k stack */ |
1da177e4 LT |
44 | /* Be sure to hunt all references to this down when you change the size of |
45 | * the kernel stack */ | |
b69c49b7 FT |
46 | #define THREAD_SIZE (PAGE_SIZE << THREAD_SIZE_ORDER) |
47 | #define THREAD_SHIFT (PAGE_SHIFT + THREAD_SIZE_ORDER) | |
1da177e4 | 48 | |
1da177e4 LT |
49 | /* |
50 | * thread information flags | |
51 | */ | |
52 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ | |
a583f1b5 SE |
53 | #define TIF_SIGPENDING 1 /* signal pending */ |
54 | #define TIF_NEED_RESCHED 2 /* rescheduling necessary */ | |
55 | #define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling TIF_NEED_RESCHED */ | |
56 | #define TIF_32BIT 4 /* 32 bit binary */ | |
0ddc9324 | 57 | #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ |
a583f1b5 | 58 | #define TIF_RESTORE_SIGMASK 6 /* restore saved signal mask */ |
527973c8 | 59 | #define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ |
d0420c83 | 60 | #define TIF_NOTIFY_RESUME 8 /* callback before returning to user */ |
ecd3d4bc KM |
61 | #define TIF_SINGLESTEP 9 /* single stepping? */ |
62 | #define TIF_BLOCKSTEP 10 /* branch stepping? */ | |
c90f0694 | 63 | #define TIF_SECCOMP 11 /* secure computing */ |
1da177e4 LT |
64 | |
65 | #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) | |
1da177e4 LT |
66 | #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) |
67 | #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) | |
68 | #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) | |
69 | #define _TIF_32BIT (1 << TIF_32BIT) | |
527973c8 | 70 | #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) |
d0420c83 | 71 | #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) |
ecd3d4bc KM |
72 | #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) |
73 | #define _TIF_BLOCKSTEP (1 << TIF_BLOCKSTEP) | |
c90f0694 | 74 | #define _TIF_SECCOMP (1 << TIF_SECCOMP) |
1da177e4 | 75 | |
d0420c83 | 76 | #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | \ |
6fd84c08 | 77 | _TIF_NEED_RESCHED) |
64482bd8 | 78 | #define _TIF_SYSCALL_TRACE_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \ |
c90f0694 HD |
79 | _TIF_BLOCKSTEP | _TIF_SYSCALL_AUDIT | \ |
80 | _TIF_SECCOMP) | |
1da177e4 | 81 | |
9dabf60d HD |
82 | #ifdef CONFIG_64BIT |
83 | # ifdef CONFIG_COMPAT | |
84 | # define is_32bit_task() (test_thread_flag(TIF_32BIT)) | |
85 | # else | |
86 | # define is_32bit_task() (0) | |
87 | # endif | |
88 | #else | |
89 | # define is_32bit_task() (1) | |
90 | #endif | |
91 | ||
1da177e4 LT |
92 | #endif /* __KERNEL__ */ |
93 | ||
94 | #endif /* _ASM_PARISC_THREAD_INFO_H */ |