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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 | ||
1da177e4 | 13 | #include "asm/ptrace.h" |
fad1c45c | 14 | #include "registers.h" |
3c917350 | 15 | #include "sysdep/archsetjmp.h" |
1da177e4 LT |
16 | |
17 | struct mm_struct; | |
18 | ||
19 | struct thread_struct { | |
ba180fd4 JD |
20 | struct task_struct *saved_task; |
21 | /* | |
22 | * This flag is set to 1 before calling do_fork (and analyzed in | |
acef2e55 PBG |
23 | * copy_thread) to mark that we are begin called from userspace (fork / |
24 | * vfork / clone), and reset to 0 after. It is left to 0 when called | |
ba180fd4 JD |
25 | * from kernelspace (i.e. kernel_thread() or fork_idle(), |
26 | * as of 2.6.11). | |
27 | */ | |
1da177e4 | 28 | int forking; |
1da177e4 | 29 | struct pt_regs regs; |
1da177e4 LT |
30 | int singlestep_syscall; |
31 | void *fault_addr; | |
fab95c55 | 32 | jmp_buf *fault_catcher; |
1da177e4 LT |
33 | struct task_struct *prev_sched; |
34 | unsigned long temp_stack; | |
fab95c55 | 35 | jmp_buf *exec_buf; |
1da177e4 | 36 | struct arch_thread arch; |
77bf4400 JD |
37 | jmp_buf switch_buf; |
38 | int mm_count; | |
1da177e4 LT |
39 | struct { |
40 | int op; | |
41 | union { | |
42 | struct { | |
43 | int pid; | |
44 | } fork, exec; | |
45 | struct { | |
46 | int (*proc)(void *); | |
47 | void *arg; | |
48 | } thread; | |
49 | struct { | |
50 | void (*proc)(void *); | |
51 | void *arg; | |
52 | } cb; | |
53 | } u; | |
54 | } request; | |
55 | }; | |
56 | ||
57 | #define INIT_THREAD \ | |
58 | { \ | |
59 | .forking = 0, \ | |
ba180fd4 | 60 | .regs = EMPTY_REGS, \ |
1da177e4 LT |
61 | .fault_addr = NULL, \ |
62 | .prev_sched = NULL, \ | |
63 | .temp_stack = 0, \ | |
64 | .exec_buf = NULL, \ | |
65 | .arch = INIT_ARCH_THREAD, \ | |
66 | .request = { 0 } \ | |
67 | } | |
68 | ||
504f52b5 | 69 | extern struct task_struct *alloc_task_struct_node(int node); |
1da177e4 | 70 | |
77bf4400 JD |
71 | static inline void release_thread(struct task_struct *task) |
72 | { | |
73 | } | |
74 | ||
1da177e4 | 75 | extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); |
c16993d9 PBG |
76 | |
77 | static inline void prepare_to_copy(struct task_struct *tsk) | |
78 | { | |
79 | } | |
80 | ||
1da177e4 LT |
81 | |
82 | extern unsigned long thread_saved_pc(struct task_struct *t); | |
83 | ||
84 | static inline void mm_copy_segments(struct mm_struct *from_mm, | |
85 | struct mm_struct *new_mm) | |
86 | { | |
87 | } | |
88 | ||
89 | #define init_stack (init_thread_union.stack) | |
90 | ||
91 | /* | |
92 | * User space process size: 3GB (default). | |
93 | */ | |
536788fe JD |
94 | extern unsigned long task_size; |
95 | ||
96 | #define TASK_SIZE (task_size) | |
1da177e4 | 97 | |
922a70d3 DH |
98 | #undef STACK_TOP |
99 | #undef STACK_TOP_MAX | |
100 | ||
101 | extern unsigned long stacksizelim; | |
102 | ||
103 | #define STACK_ROOM (stacksizelim) | |
104 | #define STACK_TOP (TASK_SIZE - 2 * PAGE_SIZE) | |
105 | #define STACK_TOP_MAX STACK_TOP | |
106 | ||
1da177e4 LT |
107 | /* This decides where the kernel will search for a free chunk of vm |
108 | * space during mmap's. | |
109 | */ | |
110 | #define TASK_UNMAPPED_BASE (0x40000000) | |
111 | ||
112 | extern void start_thread(struct pt_regs *regs, unsigned long entry, | |
113 | unsigned long stack); | |
114 | ||
115 | struct cpuinfo_um { | |
116 | unsigned long loops_per_jiffy; | |
117 | int ipi_pipe[2]; | |
118 | }; | |
119 | ||
120 | extern struct cpuinfo_um boot_cpu_data; | |
121 | ||
122 | #define my_cpu_data cpu_data[smp_processor_id()] | |
123 | ||
124 | #ifdef CONFIG_SMP | |
125 | extern struct cpuinfo_um cpu_data[]; | |
126 | #define current_cpu_data cpu_data[smp_processor_id()] | |
127 | #else | |
128 | #define cpu_data (&boot_cpu_data) | |
129 | #define current_cpu_data boot_cpu_data | |
130 | #endif | |
131 | ||
1da177e4 | 132 | |
77bf4400 | 133 | #define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf) |
c1127465 | 134 | extern unsigned long get_wchan(struct task_struct *p); |
1da177e4 | 135 | |
fad1c45c | 136 | #endif |