diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-cris/processor.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-cris/processor.h')
-rw-r--r-- | include/asm-cris/processor.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/include/asm-cris/processor.h b/include/asm-cris/processor.h new file mode 100644 index 000000000000..623bdf06d911 --- /dev/null +++ b/include/asm-cris/processor.h | |||
@@ -0,0 +1,79 @@ | |||
1 | /* | ||
2 | * include/asm-cris/processor.h | ||
3 | * | ||
4 | * Copyright (C) 2000, 2001 Axis Communications AB | ||
5 | * | ||
6 | * Authors: Bjorn Wesen Initial version | ||
7 | * | ||
8 | */ | ||
9 | |||
10 | #ifndef __ASM_CRIS_PROCESSOR_H | ||
11 | #define __ASM_CRIS_PROCESSOR_H | ||
12 | |||
13 | #include <linux/config.h> | ||
14 | #include <asm/system.h> | ||
15 | #include <asm/page.h> | ||
16 | #include <asm/ptrace.h> | ||
17 | #include <asm/arch/processor.h> | ||
18 | |||
19 | /* This decides where the kernel will search for a free chunk of vm | ||
20 | * space during mmap's. | ||
21 | */ | ||
22 | #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) | ||
23 | |||
24 | /* THREAD_SIZE is the size of the task_struct/kernel_stack combo. | ||
25 | * normally, the stack is found by doing something like p + THREAD_SIZE | ||
26 | * in CRIS, a page is 8192 bytes, which seems like a sane size | ||
27 | */ | ||
28 | |||
29 | #define THREAD_SIZE PAGE_SIZE | ||
30 | #define KERNEL_STACK_SIZE PAGE_SIZE | ||
31 | |||
32 | /* | ||
33 | * At user->kernel entry, the pt_regs struct is stacked on the top of the kernel-stack. | ||
34 | * This macro allows us to find those regs for a task. | ||
35 | * Notice that subsequent pt_regs stackings, like recursive interrupts occurring while | ||
36 | * we're in the kernel, won't affect this - only the first user->kernel transition | ||
37 | * registers are reached by this. | ||
38 | */ | ||
39 | |||
40 | #define user_regs(thread_info) (((struct pt_regs *)((unsigned long)(thread_info) + THREAD_SIZE)) - 1) | ||
41 | |||
42 | /* | ||
43 | * Dito but for the currently running task | ||
44 | */ | ||
45 | |||
46 | #define current_regs() user_regs(current->thread_info) | ||
47 | |||
48 | extern inline void prepare_to_copy(struct task_struct *tsk) | ||
49 | { | ||
50 | } | ||
51 | |||
52 | extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); | ||
53 | |||
54 | unsigned long get_wchan(struct task_struct *p); | ||
55 | |||
56 | #define KSTK_ESP(tsk) ((tsk) == current ? rdusp() : (tsk)->thread.usp) | ||
57 | |||
58 | /* | ||
59 | * Free current thread data structures etc.. | ||
60 | */ | ||
61 | |||
62 | extern inline void exit_thread(void) | ||
63 | { | ||
64 | /* Nothing needs to be done. */ | ||
65 | } | ||
66 | |||
67 | extern unsigned long thread_saved_pc(struct task_struct *tsk); | ||
68 | |||
69 | /* Free all resources held by a thread. */ | ||
70 | extern inline void release_thread(struct task_struct *dead_task) | ||
71 | { | ||
72 | /* Nothing needs to be done. */ | ||
73 | } | ||
74 | |||
75 | #define init_stack (init_thread_union.stack) | ||
76 | |||
77 | #define cpu_relax() barrier() | ||
78 | |||
79 | #endif /* __ASM_CRIS_PROCESSOR_H */ | ||