/* * Copyright (C) 2013 Altera Corporation * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch> * Copyright (C) 2004 Microtronix Datacom Ltd * Copyright (C) 2001 Ken Hill (khill@microtronix.com) *                    Vic Phillips (vic@microtronix.com) * * based on SPARC asm/processor_32.h which is: * * Copyright (C) 1994 David S. Miller * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. */ #ifndef _ASM_NIOS2_PROCESSOR_H#define _ASM_NIOS2_PROCESSOR_H #include <asm/ptrace.h>#include <asm/registers.h>#include <asm/page.h> #define NIOS2_FLAG_KTHREAD	0x00000001	/* task is a kernel thread */ #define NIOS2_OP_NOP		0x1883a#define NIOS2_OP_BREAK		0x3da03a #ifdef __KERNEL__ #define STACK_TOP	TASK_SIZE#define STACK_TOP_MAX	STACK_TOP #endif /* __KERNEL__ */ /* Kuser helpers is mapped to this user space address */#define KUSER_BASE		0x1000#define KUSER_SIZE		(PAGE_SIZE)#ifndef __ASSEMBLY__ # define TASK_SIZE		0x7FFF0000UL# define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE / 3)) /* The Nios processor specific thread struct. */struct thread_struct {	struct pt_regs *kregs; 	/* Context switch saved kernel state. */	unsigned long ksp;	unsigned long kpsr;}; #define INIT_MMAP \	{ &init_mm, (0), (0), __pgprot(0x0), VM_READ | VM_WRITE | VM_EXEC } # define INIT_THREAD {			\	.kregs	= NULL,			\	.ksp	= 0,			\	.kpsr	= 0,			\} extern void start_thread(struct pt_regs *regs, unsigned long pc,			unsigned long sp); struct task_struct; /* Free all resources held by a thread. */static inline void release_thread(struct task_struct *dead_task){} extern unsigned long get_wchan(struct task_struct *p); #define task_pt_regs(p) \	((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1) /* Used by procfs */#define KSTK_EIP(tsk)	((tsk)->thread.kregs->ea)#define KSTK_ESP(tsk)	((tsk)->thread.kregs->sp) #define cpu_relax()	barrier() #endif /* __ASSEMBLY__ */ #endif /* _ASM_NIOS2_PROCESSOR_H */