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Commit | Line | Data |
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1da177e4 | 1 | /* |
ba180fd4 | 2 | * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com) |
1da177e4 LT |
3 | * Licensed under the GPL |
4 | */ | |
5 | ||
6 | #ifndef __UM_PROCESSOR_GENERIC_H | |
7 | #define __UM_PROCESSOR_GENERIC_H | |
8 | ||
9 | struct pt_regs; | |
10 | ||
11 | struct task_struct; | |
12 | ||
37185b33 AV |
13 | #include <asm/ptrace.h> |
14 | #include <registers.h> | |
15 | #include <sysdep/archsetjmp.h> | |
1da177e4 | 16 | |
607647ab RW |
17 | #include <linux/prefetch.h> |
18 | ||
1da177e4 LT |
19 | struct mm_struct; |
20 | ||
21 | struct thread_struct { | |
ba180fd4 | 22 | struct task_struct *saved_task; |
1da177e4 | 23 | struct pt_regs regs; |
1da177e4 LT |
24 | int singlestep_syscall; |
25 | void *fault_addr; | |
fab95c55 | 26 | jmp_buf *fault_catcher; |
1da177e4 LT |
27 | struct task_struct *prev_sched; |
28 | unsigned long temp_stack; | |
fab95c55 | 29 | jmp_buf *exec_buf; |
1da177e4 | 30 | struct arch_thread arch; |
77bf4400 JD |
31 | jmp_buf switch_buf; |
32 | int mm_count; | |
1da177e4 LT |
33 | struct { |
34 | int op; | |
35 | union { | |
36 | struct { | |
37 | int pid; | |
38 | } fork, exec; | |
39 | struct { | |
40 | int (*proc)(void *); | |
41 | void *arg; | |
42 | } thread; | |
43 | struct { | |
44 | void (*proc)(void *); | |
45 | void *arg; | |
46 | } cb; | |
47 | } u; | |
48 | } request; | |
49 | }; | |
50 | ||
51 | #define INIT_THREAD \ | |
52 | { \ | |
ba180fd4 | 53 | .regs = EMPTY_REGS, \ |
1da177e4 LT |
54 | .fault_addr = NULL, \ |
55 | .prev_sched = NULL, \ | |
56 | .temp_stack = 0, \ | |
57 | .exec_buf = NULL, \ | |
58 | .arch = INIT_ARCH_THREAD, \ | |
59 | .request = { 0 } \ | |
60 | } | |
61 | ||
77bf4400 JD |
62 | static inline void release_thread(struct task_struct *task) |
63 | { | |
64 | } | |
65 | ||
1da177e4 | 66 | extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); |
c16993d9 | 67 | |
1da177e4 LT |
68 | extern unsigned long thread_saved_pc(struct task_struct *t); |
69 | ||
70 | static inline void mm_copy_segments(struct mm_struct *from_mm, | |
71 | struct mm_struct *new_mm) | |
72 | { | |
73 | } | |
74 | ||
75 | #define init_stack (init_thread_union.stack) | |
76 | ||
77 | /* | |
78 | * User space process size: 3GB (default). | |
79 | */ | |
536788fe JD |
80 | extern unsigned long task_size; |
81 | ||
82 | #define TASK_SIZE (task_size) | |
1da177e4 | 83 | |
922a70d3 DH |
84 | #undef STACK_TOP |
85 | #undef STACK_TOP_MAX | |
86 | ||
87 | extern unsigned long stacksizelim; | |
88 | ||
89 | #define STACK_ROOM (stacksizelim) | |
90 | #define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE) | |
91 | #define STACK_TOP_MAX STACK_TOP | |
92 | ||
1da177e4 LT |
93 | /* This decides where the kernel will search for a free chunk of vm |
94 | * space during mmap's. | |
95 | */ | |
96 | #define TASK_UNMAPPED_BASE (0x40000000) | |
97 | ||
98 | extern void start_thread(struct pt_regs *regs, unsigned long entry, | |
99 | unsigned long stack); | |
100 | ||
101 | struct cpuinfo_um { | |
102 | unsigned long loops_per_jiffy; | |
103 | int ipi_pipe[2]; | |
104 | }; | |
105 | ||
106 | extern struct cpuinfo_um boot_cpu_data; | |
107 | ||
108 | #define my_cpu_data cpu_data[smp_processor_id()] | |
109 | ||
110 | #ifdef CONFIG_SMP | |
111 | extern struct cpuinfo_um cpu_data[]; | |
112 | #define current_cpu_data cpu_data[smp_processor_id()] | |
113 | #else | |
114 | #define cpu_data (&boot_cpu_data) | |
115 | #define current_cpu_data boot_cpu_data | |
116 | #endif | |
117 | ||
1da177e4 | 118 | |
77bf4400 | 119 | #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) |
c1127465 | 120 | extern unsigned long get_wchan(struct task_struct *p); |
1da177e4 | 121 | |
fad1c45c | 122 | #endif |