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Diffstat (limited to 'arch/microblaze/include/asm/processor.h')
-rw-r--r-- | arch/microblaze/include/asm/processor.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h new file mode 100644 index 000000000000..d8e15434ba21 --- /dev/null +++ b/arch/microblaze/include/asm/processor.h | |||
@@ -0,0 +1,93 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2008 Michal Simek | ||
3 | * Copyright (C) 2008 PetaLogix | ||
4 | * Copyright (C) 2006 Atmark Techno, Inc. | ||
5 | * | ||
6 | * This file is subject to the terms and conditions of the GNU General Public | ||
7 | * License. See the file "COPYING" in the main directory of this archive | ||
8 | * for more details. | ||
9 | */ | ||
10 | |||
11 | #ifndef _ASM_MICROBLAZE_PROCESSOR_H | ||
12 | #define _ASM_MICROBLAZE_PROCESSOR_H | ||
13 | |||
14 | #include <asm/ptrace.h> | ||
15 | #include <asm/setup.h> | ||
16 | #include <asm/registers.h> | ||
17 | #include <asm/segment.h> | ||
18 | |||
19 | # ifndef __ASSEMBLY__ | ||
20 | /* from kernel/cpu/mb.c */ | ||
21 | extern const struct seq_operations cpuinfo_op; | ||
22 | |||
23 | # define cpu_relax() barrier() | ||
24 | # define cpu_sleep() do {} while (0) | ||
25 | # define prepare_to_copy(tsk) do {} while (0) | ||
26 | |||
27 | # endif /* __ASSEMBLY__ */ | ||
28 | |||
29 | /* | ||
30 | * User space process size: memory size | ||
31 | * | ||
32 | * TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both | ||
33 | * user processes and the kernel is on the same memory region. They | ||
34 | * both share the memory space and that is limited by the amount of | ||
35 | * physical memory. thus, we set TASK_SIZE == amount of total memory. | ||
36 | */ | ||
37 | # define TASK_SIZE (0x81000000 - 0x80000000) | ||
38 | |||
39 | /* | ||
40 | * Default implementation of macro that returns current | ||
41 | * instruction pointer ("program counter"). | ||
42 | */ | ||
43 | # define current_text_addr() ({ __label__ _l; _l: &&_l; }) | ||
44 | |||
45 | /* | ||
46 | * This decides where the kernel will search for a free chunk of vm | ||
47 | * space during mmap's. We won't be using it | ||
48 | */ | ||
49 | # define TASK_UNMAPPED_BASE 0 | ||
50 | |||
51 | /* definition in include/linux/sched.h */ | ||
52 | struct task_struct; | ||
53 | |||
54 | /* thread_struct is gone. use thread_info instead. */ | ||
55 | struct thread_struct { }; | ||
56 | # define INIT_THREAD { } | ||
57 | |||
58 | /* Do necessary setup to start up a newly executed thread. */ | ||
59 | static inline void start_thread(struct pt_regs *regs, | ||
60 | unsigned long pc, | ||
61 | unsigned long usp) | ||
62 | { | ||
63 | regs->pc = pc; | ||
64 | regs->r1 = usp; | ||
65 | regs->kernel_mode = 0; | ||
66 | } | ||
67 | |||
68 | /* Free all resources held by a thread. */ | ||
69 | static inline void release_thread(struct task_struct *dead_task) | ||
70 | { | ||
71 | } | ||
72 | |||
73 | /* Free all resources held by a thread. */ | ||
74 | static inline void exit_thread(void) | ||
75 | { | ||
76 | } | ||
77 | |||
78 | extern unsigned long thread_saved_pc(struct task_struct *t); | ||
79 | |||
80 | extern unsigned long get_wchan(struct task_struct *p); | ||
81 | |||
82 | /* | ||
83 | * create a kernel thread without removing it from tasklists | ||
84 | */ | ||
85 | extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags); | ||
86 | |||
87 | # define task_pt_regs(tsk) \ | ||
88 | (((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1) | ||
89 | |||
90 | # define KSTK_EIP(tsk) (0) | ||
91 | # define KSTK_ESP(tsk) (0) | ||
92 | |||
93 | #endif /* _ASM_MICROBLAZE_PROCESSOR_H */ | ||