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authorChris Zankel <chris@zankel.net>2008-11-06 09:40:46 -0500
committerChris Zankel <chris@zankel.net>2008-11-06 13:25:09 -0500
commit367b8112fe2ea5c39a7bb4d263dcdd9b612fae18 (patch)
tree9f3349189718dd2c5678faf0ab38f389786b6925 /include/asm-xtensa/thread_info.h
parent206ead28377fee86b129637edada8c77816cc0d6 (diff)
xtensa: move headers files to arch/xtensa/include
Move all header files for xtensa to arch/xtensa/include and platform and variant header files to the appropriate arch/xtensa/platforms/ and arch/xtensa/variants/ directories. Moving the files gets also rid of all uses of symlinks in the Makefile. This has been completed already for the majority of the architectures and xtensa is one out of six missing. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'include/asm-xtensa/thread_info.h')
-rw-r--r--include/asm-xtensa/thread_info.h164
1 files changed, 0 insertions, 164 deletions
diff --git a/include/asm-xtensa/thread_info.h b/include/asm-xtensa/thread_info.h
deleted file mode 100644
index 0f4fe1faf9ba..000000000000
--- a/include/asm-xtensa/thread_info.h
+++ /dev/null
@@ -1,164 +0,0 @@
1/*
2 * include/asm-xtensa/thread_info.h
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
9 */
10
11#ifndef _XTENSA_THREAD_INFO_H
12#define _XTENSA_THREAD_INFO_H
13
14#ifdef __KERNEL__
15
16#ifndef __ASSEMBLY__
17# include <asm/processor.h>
18#endif
19
20/*
21 * low level task data that entry.S needs immediate access to
22 * - this struct should fit entirely inside of one cache line
23 * - this struct shares the supervisor stack pages
24 * - if the contents of this structure are changed, the assembly constants
25 * must also be changed
26 */
27
28#ifndef __ASSEMBLY__
29
30#if XTENSA_HAVE_COPROCESSORS
31
32typedef struct xtregs_coprocessor {
33 xtregs_cp0_t cp0;
34 xtregs_cp1_t cp1;
35 xtregs_cp2_t cp2;
36 xtregs_cp3_t cp3;
37 xtregs_cp4_t cp4;
38 xtregs_cp5_t cp5;
39 xtregs_cp6_t cp6;
40 xtregs_cp7_t cp7;
41} xtregs_coprocessor_t;
42
43#endif
44
45struct thread_info {
46 struct task_struct *task; /* main task structure */
47 struct exec_domain *exec_domain; /* execution domain */
48 unsigned long flags; /* low level flags */
49 unsigned long status; /* thread-synchronous flags */
50 __u32 cpu; /* current CPU */
51 __s32 preempt_count; /* 0 => preemptable,< 0 => BUG*/
52
53 mm_segment_t addr_limit; /* thread address space */
54 struct restart_block restart_block;
55
56 unsigned long cpenable;
57
58 /* Allocate storage for extra user states and coprocessor states. */
59#if XTENSA_HAVE_COPROCESSORS
60 xtregs_coprocessor_t xtregs_cp;
61#endif
62 xtregs_user_t xtregs_user;
63};
64
65#else /* !__ASSEMBLY__ */
66
67/* offsets into the thread_info struct for assembly code access */
68#define TI_TASK 0x00000000
69#define TI_EXEC_DOMAIN 0x00000004
70#define TI_FLAGS 0x00000008
71#define TI_STATUS 0x0000000C
72#define TI_CPU 0x00000010
73#define TI_PRE_COUNT 0x00000014
74#define TI_ADDR_LIMIT 0x00000018
75#define TI_RESTART_BLOCK 0x000001C
76
77#endif
78
79#define PREEMPT_ACTIVE 0x10000000
80
81/*
82 * macros/functions for gaining access to the thread information structure
83 *
84 * preempt_count needs to be 1 initially, until the scheduler is functional.
85 */
86
87#ifndef __ASSEMBLY__
88
89#define INIT_THREAD_INFO(tsk) \
90{ \
91 .task = &tsk, \
92 .exec_domain = &default_exec_domain, \
93 .flags = 0, \
94 .cpu = 0, \
95 .preempt_count = 1, \
96 .addr_limit = KERNEL_DS, \
97 .restart_block = { \
98 .fn = do_no_restart_syscall, \
99 }, \
100}
101
102#define init_thread_info (init_thread_union.thread_info)
103#define init_stack (init_thread_union.stack)
104
105/* how to get the thread information struct from C */
106static inline struct thread_info *current_thread_info(void)
107{
108 struct thread_info *ti;
109 __asm__("extui %0,a1,0,13\n\t"
110 "xor %0, a1, %0" : "=&r" (ti) : );
111 return ti;
112}
113
114#else /* !__ASSEMBLY__ */
115
116/* how to get the thread information struct from ASM */
117#define GET_THREAD_INFO(reg,sp) \
118 extui reg, sp, 0, 13; \
119 xor reg, sp, reg
120#endif
121
122
123/*
124 * thread information flags
125 * - these are process state flags that various assembly files may need to access
126 * - pending work-to-be-done flags are in LSW
127 * - other flags in MSW
128 */
129#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
130#define TIF_SIGPENDING 1 /* signal pending */
131#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
132#define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */
133#define TIF_IRET 4 /* return with iret */
134#define TIF_MEMDIE 5
135#define TIF_RESTORE_SIGMASK 6 /* restore signal mask in do_signal() */
136#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */
137#define TIF_FREEZE 17 /* is freezing for suspend */
138
139#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
140#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
141#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
142#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
143#define _TIF_IRET (1<<TIF_IRET)
144#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
145#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
146#define _TIF_FREEZE (1<<TIF_FREEZE)
147
148#define _TIF_WORK_MASK 0x0000FFFE /* work to do on interrupt/exception return */
149#define _TIF_ALLWORK_MASK 0x0000FFFF /* work to do on any return to u-space */
150
151/*
152 * Thread-synchronous status.
153 *
154 * This is different from the flags in that nobody else
155 * ever touches our thread-synchronous status, so we don't
156 * have to worry about atomic accesses.
157 */
158#define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */
159
160#define THREAD_SIZE 8192 //(2*PAGE_SIZE)
161#define THREAD_SIZE_ORDER 1
162
163#endif /* __KERNEL__ */
164#endif /* _XTENSA_THREAD_INFO */