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85 lines
2.0 KiB
85 lines
2.0 KiB
/* |
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* Copyright (C) 2013 Altera Corporation |
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* Copyright (C) 2010 Tobias Klauser <[email protected]> |
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* Copyright (C) 2004 Microtronix Datacom Ltd |
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* Copyright (C) 2001 Ken Hill ([email protected]) |
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* Vic Phillips ([email protected]) |
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* |
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* based on SPARC asm/processor_32.h which is: |
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* |
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* Copyright (C) 1994 David S. Miller |
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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_NIOS2_PROCESSOR_H |
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#define _ASM_NIOS2_PROCESSOR_H |
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#include <asm/ptrace.h> |
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#include <asm/registers.h> |
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#include <asm/page.h> |
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#define NIOS2_FLAG_KTHREAD 0x00000001 /* task is a kernel thread */ |
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#define NIOS2_OP_NOP 0x1883a |
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#define NIOS2_OP_BREAK 0x3da03a |
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#ifdef __KERNEL__ |
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#define STACK_TOP TASK_SIZE |
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#define STACK_TOP_MAX STACK_TOP |
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#endif /* __KERNEL__ */ |
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/* Kuser helpers is mapped to this user space address */ |
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#define KUSER_BASE 0x1000 |
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#define KUSER_SIZE (PAGE_SIZE) |
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#ifndef __ASSEMBLY__ |
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# define TASK_SIZE 0x7FFF0000UL |
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# define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3)) |
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/* The Nios processor specific thread struct. */ |
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struct thread_struct { |
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struct pt_regs *kregs; |
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/* Context switch saved kernel state. */ |
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unsigned long ksp; |
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unsigned long kpsr; |
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}; |
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#define INIT_MMAP \ |
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{ &init_mm, (0), (0), __pgprot(0x0), VM_READ | VM_WRITE | VM_EXEC } |
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# define INIT_THREAD { \ |
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.kregs = NULL, \ |
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.ksp = 0, \ |
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.kpsr = 0, \ |
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} |
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extern void start_thread(struct pt_regs *regs, unsigned long pc, |
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unsigned long sp); |
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struct task_struct; |
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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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extern unsigned long get_wchan(struct task_struct *p); |
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#define task_pt_regs(p) \ |
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((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1) |
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/* Used by procfs */ |
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#define KSTK_EIP(tsk) ((tsk)->thread.kregs->ea) |
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#define KSTK_ESP(tsk) ((tsk)->thread.kregs->sp) |
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#define cpu_relax() barrier() |
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#endif /* __ASSEMBLY__ */ |
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#endif /* _ASM_NIOS2_PROCESSOR_H */
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