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94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/*
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* Copyright (C) 2008 Michal Simek
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* Copyright (C) 2008 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#ifndef _ASM_MICROBLAZE_PROCESSOR_H
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#define _ASM_MICROBLAZE_PROCESSOR_H
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#include <asm/ptrace.h>
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#include <asm/setup.h>
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#include <asm/registers.h>
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#include <asm/segment.h>
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# ifndef __ASSEMBLY__
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/* from kernel/cpu/mb.c */
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extern const struct seq_operations cpuinfo_op;
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# define cpu_relax() barrier()
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# define cpu_sleep() do {} while (0)
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# define prepare_to_copy(tsk) do {} while (0)
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# endif /* __ASSEMBLY__ */
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/*
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* User space process size: memory size
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*
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* TASK_SIZE on MMU cpu is usually 1GB. However, on no-MMU arch, both
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* user processes and the kernel is on the same memory region. They
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* both share the memory space and that is limited by the amount of
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* physical memory. thus, we set TASK_SIZE == amount of total memory.
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*/
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# define TASK_SIZE (0x81000000 - 0x80000000)
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/*
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* Default implementation of macro that returns current
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* instruction pointer ("program counter").
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*/
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# define current_text_addr() ({ __label__ _l; _l: &&_l; })
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/*
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* This decides where the kernel will search for a free chunk of vm
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* space during mmap's. We won't be using it
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*/
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# define TASK_UNMAPPED_BASE 0
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/* definition in include/linux/sched.h */
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struct task_struct;
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/* thread_struct is gone. use thread_info instead. */
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struct thread_struct { };
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# define INIT_THREAD { }
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/* Do necessary setup to start up a newly executed thread. */
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static inline void start_thread(struct pt_regs *regs,
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unsigned long pc,
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unsigned long usp)
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{
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regs->pc = pc;
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regs->r1 = usp;
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regs->pt_mode = 0;
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}
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/* Free all resources held by a thread. */
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static inline void release_thread(struct task_struct *dead_task)
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{
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}
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/* Free all resources held by a thread. */
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static inline void exit_thread(void)
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{
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}
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extern unsigned long thread_saved_pc(struct task_struct *t);
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extern unsigned long get_wchan(struct task_struct *p);
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/*
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* create a kernel thread without removing it from tasklists
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*/
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extern int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags);
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# define task_pt_regs(tsk) \
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(((struct pt_regs *)(THREAD_SIZE + task_stack_page(tsk))) - 1)
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# define KSTK_EIP(tsk) (0)
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# define KSTK_ESP(tsk) (0)
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#endif /* _ASM_MICROBLAZE_PROCESSOR_H */
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