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6#ifndef _ASM_THREAD_INFO_H
7#define _ASM_THREAD_INFO_H
8
9#ifdef __KERNEL__
10
11#define NSWINS 7
12
13#define TI_FLAG_BYTE_FAULT_CODE 0
14#define TI_FLAG_FAULT_CODE_SHIFT 56
15#define TI_FLAG_BYTE_WSTATE 1
16#define TI_FLAG_WSTATE_SHIFT 48
17#define TI_FLAG_BYTE_CWP 2
18#define TI_FLAG_CWP_SHIFT 40
19#define TI_FLAG_BYTE_CURRENT_DS 3
20#define TI_FLAG_CURRENT_DS_SHIFT 32
21#define TI_FLAG_BYTE_FPDEPTH 4
22#define TI_FLAG_FPDEPTH_SHIFT 24
23#define TI_FLAG_BYTE_WSAVED 5
24#define TI_FLAG_WSAVED_SHIFT 16
25
26#include <asm/page.h>
27
28#ifndef __ASSEMBLY__
29
30#include <asm/ptrace.h>
31#include <asm/types.h>
32
33struct task_struct;
34struct exec_domain;
35
36struct thread_info {
37
38 struct task_struct *task;
39 unsigned long flags;
40 __u8 fpsaved[7];
41 __u8 status;
42 unsigned long ksp;
43
44
45 unsigned long fault_address;
46 struct pt_regs *kregs;
47 struct exec_domain *exec_domain;
48 int preempt_count;
49 __u8 new_child;
50 __u8 syscall_noerror;
51 __u16 cpu;
52
53 unsigned long *utraps;
54
55 struct reg_window reg_window[NSWINS];
56 unsigned long rwbuf_stkptrs[NSWINS];
57
58 unsigned long gsr[7];
59 unsigned long xfsr[7];
60
61 struct restart_block restart_block;
62
63 struct pt_regs *kern_una_regs;
64 unsigned int kern_una_insn;
65
66 unsigned long fpregs[0] __attribute__ ((aligned(64)));
67};
68
69#endif
70
71
72#define TI_TASK 0x00000000
73#define TI_FLAGS 0x00000008
74#define TI_FAULT_CODE (TI_FLAGS + TI_FLAG_BYTE_FAULT_CODE)
75#define TI_WSTATE (TI_FLAGS + TI_FLAG_BYTE_WSTATE)
76#define TI_CWP (TI_FLAGS + TI_FLAG_BYTE_CWP)
77#define TI_CURRENT_DS (TI_FLAGS + TI_FLAG_BYTE_CURRENT_DS)
78#define TI_FPDEPTH (TI_FLAGS + TI_FLAG_BYTE_FPDEPTH)
79#define TI_WSAVED (TI_FLAGS + TI_FLAG_BYTE_WSAVED)
80#define TI_FPSAVED 0x00000010
81#define TI_KSP 0x00000018
82#define TI_FAULT_ADDR 0x00000020
83#define TI_KREGS 0x00000028
84#define TI_EXEC_DOMAIN 0x00000030
85#define TI_PRE_COUNT 0x00000038
86#define TI_NEW_CHILD 0x0000003c
87#define TI_SYS_NOERROR 0x0000003d
88#define TI_CPU 0x0000003e
89#define TI_UTRAPS 0x00000040
90#define TI_REG_WINDOW 0x00000048
91#define TI_RWIN_SPTRS 0x000003c8
92#define TI_GSR 0x00000400
93#define TI_XFSR 0x00000438
94#define TI_RESTART_BLOCK 0x00000470
95#define TI_KUNA_REGS 0x000004a0
96#define TI_KUNA_INSN 0x000004a8
97#define TI_FPREGS 0x000004c0
98
99
100#define FAULT_CODE_WRITE 0x01
101#define FAULT_CODE_DTLB 0x02
102#define FAULT_CODE_ITLB 0x04
103#define FAULT_CODE_WINFIXUP 0x08
104#define FAULT_CODE_BLKCOMMIT 0x10
105
106#if PAGE_SHIFT == 13
107#define THREAD_SIZE (2*PAGE_SIZE)
108#define THREAD_SHIFT (PAGE_SHIFT + 1)
109#else
110#define THREAD_SIZE PAGE_SIZE
111#define THREAD_SHIFT PAGE_SHIFT
112#endif
113
114#define PREEMPT_ACTIVE 0x10000000
115
116
117
118
119#ifndef __ASSEMBLY__
120
121#define INIT_THREAD_INFO(tsk) \
122{ \
123 .task = &tsk, \
124 .flags = ((unsigned long)ASI_P) << TI_FLAG_CURRENT_DS_SHIFT, \
125 .exec_domain = &default_exec_domain, \
126 .preempt_count = INIT_PREEMPT_COUNT, \
127 .restart_block = { \
128 .fn = do_no_restart_syscall, \
129 }, \
130}
131
132#define init_thread_info (init_thread_union.thread_info)
133#define init_stack (init_thread_union.stack)
134
135
136register struct thread_info *current_thread_info_reg asm("g6");
137#define current_thread_info() (current_thread_info_reg)
138
139
140#if PAGE_SHIFT == 13
141#define __THREAD_INFO_ORDER 1
142#else
143#define __THREAD_INFO_ORDER 0
144#endif
145
146#define __HAVE_ARCH_THREAD_INFO_ALLOCATOR
147
148#ifdef CONFIG_DEBUG_STACK_USAGE
149#define THREAD_FLAGS (GFP_KERNEL | __GFP_ZERO)
150#else
151#define THREAD_FLAGS (GFP_KERNEL)
152#endif
153
154#define alloc_thread_info_node(tsk, node) \
155({ \
156 struct page *page = alloc_pages_node(node, THREAD_FLAGS, \
157 __THREAD_INFO_ORDER); \
158 struct thread_info *ret; \
159 \
160 ret = page ? page_address(page) : NULL; \
161 ret; \
162})
163
164#define free_thread_info(ti) \
165 free_pages((unsigned long)(ti),__THREAD_INFO_ORDER)
166
167#define __thread_flag_byte_ptr(ti) \
168 ((unsigned char *)(&((ti)->flags)))
169#define __cur_thread_flag_byte_ptr __thread_flag_byte_ptr(current_thread_info())
170
171#define get_thread_fault_code() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE])
172#define set_thread_fault_code(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FAULT_CODE] = (val))
173#define get_thread_wstate() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE])
174#define set_thread_wstate(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSTATE] = (val))
175#define get_thread_cwp() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP])
176#define set_thread_cwp(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CWP] = (val))
177#define get_thread_current_ds() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS])
178#define set_thread_current_ds(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_CURRENT_DS] = (val))
179#define get_thread_fpdepth() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH])
180#define set_thread_fpdepth(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_FPDEPTH] = (val))
181#define get_thread_wsaved() (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED])
182#define set_thread_wsaved(val) (__cur_thread_flag_byte_ptr[TI_FLAG_BYTE_WSAVED] = (val))
183
184#endif
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209#define TIF_SYSCALL_TRACE 0
210#define TIF_NOTIFY_RESUME 1
211#define TIF_SIGPENDING 2
212#define TIF_NEED_RESCHED 3
213
214#define TIF_UNALIGNED 5
215
216#define TIF_32BIT 7
217
218#define TIF_SECCOMP 9
219#define TIF_SYSCALL_AUDIT 10
220#define TIF_SYSCALL_TRACEPOINT 11
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226#define TIF_MEMDIE 13
227#define TIF_POLLING_NRFLAG 14
228#define TIF_FREEZE 15
229
230#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
231#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
232#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
233#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
234#define _TIF_UNALIGNED (1<<TIF_UNALIGNED)
235#define _TIF_32BIT (1<<TIF_32BIT)
236#define _TIF_SECCOMP (1<<TIF_SECCOMP)
237#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
238#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
239#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
240#define _TIF_FREEZE (1<<TIF_FREEZE)
241
242#define _TIF_USER_WORK_MASK ((0xff << TI_FLAG_WSAVED_SHIFT) | \
243 _TIF_DO_NOTIFY_RESUME_MASK | \
244 _TIF_NEED_RESCHED)
245#define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING)
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256#define TS_RESTORE_SIGMASK 0x0001
257
258#ifndef __ASSEMBLY__
259#define HAVE_SET_RESTORE_SIGMASK 1
260static inline void set_restore_sigmask(void)
261{
262 struct thread_info *ti = current_thread_info();
263 ti->status |= TS_RESTORE_SIGMASK;
264 set_bit(TIF_SIGPENDING, &ti->flags);
265}
266#endif
267
268#endif
269
270#endif
271