1
2#ifndef __ASM_SH_THREAD_INFO_H
3#define __ASM_SH_THREAD_INFO_H
4
5
6
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8
9
10
11
12
13#ifdef __KERNEL__
14
15#include <asm/page.h>
16
17
18
19
20#define FAULT_CODE_WRITE (1 << 0)
21#define FAULT_CODE_INITIAL (1 << 1)
22#define FAULT_CODE_ITLB (1 << 2)
23#define FAULT_CODE_PROT (1 << 3)
24#define FAULT_CODE_USER (1 << 4)
25
26#ifndef __ASSEMBLY__
27#include <asm/processor.h>
28
29struct thread_info {
30 struct task_struct *task;
31 unsigned long flags;
32 __u32 status;
33 __u32 cpu;
34 int preempt_count;
35 mm_segment_t addr_limit;
36 unsigned long previous_sp;
37
38 __u8 supervisor_stack[0];
39};
40
41#endif
42
43#if defined(CONFIG_4KSTACKS)
44#define THREAD_SHIFT 12
45#else
46#define THREAD_SHIFT 13
47#endif
48
49#define THREAD_SIZE (1 << THREAD_SHIFT)
50#define STACK_WARN (THREAD_SIZE >> 3)
51
52
53
54
55#ifndef __ASSEMBLY__
56#define INIT_THREAD_INFO(tsk) \
57{ \
58 .task = &tsk, \
59 .flags = 0, \
60 .status = 0, \
61 .cpu = 0, \
62 .preempt_count = INIT_PREEMPT_COUNT, \
63 .addr_limit = KERNEL_DS, \
64}
65
66#define init_thread_info (init_thread_union.thread_info)
67#define init_stack (init_thread_union.stack)
68
69
70register unsigned long current_stack_pointer asm("r15") __used;
71
72
73static inline struct thread_info *current_thread_info(void)
74{
75 struct thread_info *ti;
76#if defined(CONFIG_SUPERH64)
77 __asm__ __volatile__ ("getcon cr17, %0" : "=r" (ti));
78#elif defined(CONFIG_CPU_HAS_SR_RB)
79 __asm__ __volatile__ ("stc r7_bank, %0" : "=r" (ti));
80#else
81 unsigned long __dummy;
82
83 __asm__ __volatile__ (
84 "mov r15, %0\n\t"
85 "and %1, %0\n\t"
86 : "=&r" (ti), "=r" (__dummy)
87 : "1" (~(THREAD_SIZE - 1))
88 : "memory");
89#endif
90
91 return ti;
92}
93
94#define THREAD_SIZE_ORDER (THREAD_SHIFT - PAGE_SHIFT)
95
96extern void arch_task_cache_init(void);
97extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
98extern void arch_release_task_struct(struct task_struct *tsk);
99extern void init_thread_xstate(void);
100
101#endif
102
103
104
105
106
107
108
109
110
111
112#define TIF_SYSCALL_TRACE 0
113#define TIF_SIGPENDING 1
114#define TIF_NEED_RESCHED 2
115#define TIF_SINGLESTEP 4
116#define TIF_SYSCALL_AUDIT 5
117#define TIF_SECCOMP 6
118#define TIF_NOTIFY_RESUME 7
119#define TIF_SYSCALL_TRACEPOINT 8
120#define TIF_POLLING_NRFLAG 17
121#define TIF_MEMDIE 18
122
123#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
124#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
125#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
126#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
127#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
128#define _TIF_SECCOMP (1 << TIF_SECCOMP)
129#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
130#define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
131#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
132
133
134#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
135 _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
136 _TIF_SYSCALL_TRACEPOINT)
137
138
139#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \
140 _TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \
141 _TIF_SINGLESTEP | _TIF_NOTIFY_RESUME | \
142 _TIF_SYSCALL_TRACEPOINT)
143
144
145#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \
146 _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP))
147
148
149
150
151
152
153
154
155#define TS_USEDFPU 0x0002
156
157#ifndef __ASSEMBLY__
158
159#define TI_FLAG_FAULT_CODE_SHIFT 24
160
161
162
163
164static inline void set_thread_fault_code(unsigned int val)
165{
166 struct thread_info *ti = current_thread_info();
167 ti->flags = (ti->flags & (~0 >> (32 - TI_FLAG_FAULT_CODE_SHIFT)))
168 | (val << TI_FLAG_FAULT_CODE_SHIFT);
169}
170
171static inline unsigned int get_thread_fault_code(void)
172{
173 struct thread_info *ti = current_thread_info();
174 return ti->flags >> TI_FLAG_FAULT_CODE_SHIFT;
175}
176
177#endif
178
179#endif
180
181#endif
182