diff options
Diffstat (limited to 'include/asm-sh64/thread_info.h')
-rw-r--r-- | include/asm-sh64/thread_info.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/include/asm-sh64/thread_info.h b/include/asm-sh64/thread_info.h new file mode 100644 index 000000000000..e65f394da472 --- /dev/null +++ b/include/asm-sh64/thread_info.h | |||
@@ -0,0 +1,87 @@ | |||
1 | #ifndef __ASM_SH64_THREAD_INFO_H | ||
2 | #define __ASM_SH64_THREAD_INFO_H | ||
3 | |||
4 | /* | ||
5 | * SuperH 5 version | ||
6 | * Copyright (C) 2003 Paul Mundt | ||
7 | */ | ||
8 | |||
9 | #ifdef __KERNEL__ | ||
10 | |||
11 | #ifndef __ASSEMBLY__ | ||
12 | #include <asm/registers.h> | ||
13 | |||
14 | /* | ||
15 | * low level task data that entry.S needs immediate access to | ||
16 | * - this struct should fit entirely inside of one cache line | ||
17 | * - this struct shares the supervisor stack pages | ||
18 | * - if the contents of this structure are changed, the assembly constants must also be changed | ||
19 | */ | ||
20 | struct thread_info { | ||
21 | struct task_struct *task; /* main task structure */ | ||
22 | struct exec_domain *exec_domain; /* execution domain */ | ||
23 | unsigned long flags; /* low level flags */ | ||
24 | /* Put the 4 32-bit fields together to make asm offsetting easier. */ | ||
25 | __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ | ||
26 | __u16 cpu; | ||
27 | |||
28 | mm_segment_t addr_limit; | ||
29 | struct restart_block restart_block; | ||
30 | |||
31 | __u8 supervisor_stack[0]; | ||
32 | }; | ||
33 | |||
34 | /* | ||
35 | * macros/functions for gaining access to the thread information structure | ||
36 | */ | ||
37 | #define INIT_THREAD_INFO(tsk) \ | ||
38 | { \ | ||
39 | .task = &tsk, \ | ||
40 | .exec_domain = &default_exec_domain, \ | ||
41 | .flags = 0, \ | ||
42 | .cpu = 0, \ | ||
43 | .preempt_count = 1, \ | ||
44 | .addr_limit = KERNEL_DS, \ | ||
45 | .restart_block = { \ | ||
46 | .fn = do_no_restart_syscall, \ | ||
47 | }, \ | ||
48 | } | ||
49 | |||
50 | #define init_thread_info (init_thread_union.thread_info) | ||
51 | #define init_stack (init_thread_union.stack) | ||
52 | |||
53 | /* how to get the thread information struct from C */ | ||
54 | static inline struct thread_info *current_thread_info(void) | ||
55 | { | ||
56 | struct thread_info *ti; | ||
57 | |||
58 | __asm__ __volatile__ ("getcon " __KCR0 ", %0\n\t" : "=r" (ti)); | ||
59 | |||
60 | return ti; | ||
61 | } | ||
62 | |||
63 | /* thread information allocation */ | ||
64 | |||
65 | |||
66 | |||
67 | #define alloc_thread_info(ti) ((struct thread_info *) __get_free_pages(GFP_KERNEL,1)) | ||
68 | #define free_thread_info(ti) free_pages((unsigned long) (ti), 1) | ||
69 | #define get_thread_info(ti) get_task_struct((ti)->task) | ||
70 | #define put_thread_info(ti) put_task_struct((ti)->task) | ||
71 | |||
72 | #endif /* __ASSEMBLY__ */ | ||
73 | |||
74 | #define THREAD_SIZE 8192 | ||
75 | |||
76 | #define PREEMPT_ACTIVE 0x4000000 | ||
77 | |||
78 | /* thread information flags */ | ||
79 | #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ | ||
80 | #define TIF_SIGPENDING 2 /* signal pending */ | ||
81 | #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ | ||
82 | #define TIF_MEMDIE 4 | ||
83 | |||
84 | |||
85 | #endif /* __KERNEL__ */ | ||
86 | |||
87 | #endif /* __ASM_SH64_THREAD_INFO_H */ | ||