Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
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#include <asm/entry.h>
19#include <asm/current.h>
20
21# ifndef __ASSEMBLY__
22/* from kernel/cpu/mb.c */
23extern const struct seq_operations cpuinfo_op;
24
25# define cpu_relax() barrier()
26# define cpu_sleep() do {} while (0)
27# define prepare_to_copy(tsk) do {} while (0)
28
29# endif /* __ASSEMBLY__ */
30
31#define task_pt_regs(tsk) \
32 (((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
33
34/* Do necessary setup to start up a newly executed thread. */
35void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long usp);
36
37/*
38 * User space process size: memory size
39 *
40 * TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
41 * user processes and the kernel is on the same memory region. They
42 * both share the memory space and that is limited by the amount of
43 * physical memory. thus, we set TASK_SIZE == amount of total memory.
44 */
45# define TASK_SIZE (0x81000000 - 0x80000000)
46
47/*
48 * Default implementation of macro that returns current
49 * instruction pointer ("program counter").
50 */
51# define current_text_addr() ({ __label__ _l; _l: &&_l; })
52
53/*
54 * This decides where the kernel will search for a free chunk of vm
55 * space during mmap's. We won't be using it
56 */
57# define TASK_UNMAPPED_BASE 0
58
59/* definition in include/linux/sched.h */
60struct task_struct;
61
62/* thread_struct is gone. use thread_info instead. */
63struct thread_struct { };
64# define INIT_THREAD { }
65
66/* Free all resources held by a thread. */
67static inline void release_thread(struct task_struct *dead_task)
68{
69}
70
71/* Free all resources held by a thread. */
72static inline void exit_thread(void)
73{
74}
75
76extern unsigned long thread_saved_pc(struct task_struct *t);
77
78extern unsigned long get_wchan(struct task_struct *p);
79
80/*
81 * create a kernel thread without removing it from tasklists
82 */
83extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
84
85# define KSTK_EIP(tsk) (0)
86# define KSTK_ESP(tsk) (0)
87
88#endif /* _ASM_MICROBLAZE_PROCESSOR_H */