ad7ef26d43
prepare_to_copy() was removed from all architectures supported at that
time in commit 55ccf3fe3f ("fork: move the real prepare_to_copy()
users to arch_dup_task_struct()"). Remove it from nios2 as well.
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Ley Foon Tan <lftan@altera.com>
100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/*
|
|
* 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__
|
|
|
|
/*
|
|
* Default implementation of macro that returns current
|
|
* instruction pointer ("program counter").
|
|
*/
|
|
#define current_text_addr() ({ __label__ _l; _l: &&_l; })
|
|
|
|
# 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)
|
|
{
|
|
}
|
|
|
|
/* Free current thread data structures etc.. */
|
|
static inline void exit_thread(void)
|
|
{
|
|
}
|
|
|
|
/* Return saved PC of a blocked thread. */
|
|
#define thread_saved_pc(tsk) ((tsk)->thread.kregs->ea)
|
|
|
|
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()
|
|
#define cpu_relax_lowlatency() cpu_relax()
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_NIOS2_PROCESSOR_H */
|