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- /*
- * Copyright (C) 2013 Altera Corporation
- * Copyright (C) 2010 Tobias Klauser <[email protected]>
- * Copyright (C) 2004 Microtronix Datacom Ltd
- * Copyright (C) 2001 Ken Hill ([email protected])
- * Vic Phillips ([email protected])
- *
- * 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;
- 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 */
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