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
19# ifndef __ASSEMBLY__
20/* from kernel/cpu/mb.c */
21extern 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 */
52struct task_struct;
53
54/* thread_struct is gone. use thread_info instead. */
55struct thread_struct { };
56# define INIT_THREAD { }
57
58/* Do necessary setup to start up a newly executed thread. */
59static 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. */
69static inline void release_thread(struct task_struct *dead_task)
70{
71}
72
73/* Free all resources held by a thread. */
74static inline void exit_thread(void)
75{
76}
77
78extern unsigned long thread_saved_pc(struct task_struct *t);
79
80extern unsigned long get_wchan(struct task_struct *p);
81
82/*
83 * create a kernel thread without removing it from tasklists
84 */
85extern 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 */