Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/nios2/include/asm/processor.h
26493 views
1
/*

2
 * Copyright (C) 2013 Altera Corporation

3
 * Copyright (C) 2010 Tobias Klauser <[email protected]>

4
 * Copyright (C) 2004 Microtronix Datacom Ltd

5
 * Copyright (C) 2001 Ken Hill ([email protected])

6
 *                    Vic Phillips ([email protected])

7
 *

8
 * based on SPARC asm/processor_32.h which is:

9
 *

10
 * Copyright (C) 1994 David S. Miller

11
 *

12
 * This file is subject to the terms and conditions of the GNU General Public

13
 * License.  See the file "COPYING" in the main directory of this archive

14
 * for more details.

15
 */

16


17
#ifndef _ASM_NIOS2_PROCESSOR_H

18
#define _ASM_NIOS2_PROCESSOR_H

19


20
#include <asm/ptrace.h>

21
#include <asm/registers.h>

22
#include <asm/page.h>

23


24
#define NIOS2_FLAG_KTHREAD	0x00000001	/* task is a kernel thread */

25


26
#define NIOS2_OP_NOP		0x1883a

27
#define NIOS2_OP_BREAK		0x3da03a

28


29
#ifdef __KERNEL__

30


31
#define STACK_TOP	TASK_SIZE

32
#define STACK_TOP_MAX	STACK_TOP

33


34
#endif /* __KERNEL__ */

35


36
/* Kuser helpers is mapped to this user space address */

37
#define KUSER_BASE		0x1000

38
#define KUSER_SIZE		(PAGE_SIZE)

39
#ifndef __ASSEMBLY__

40


41
# define TASK_SIZE		0x7FFF0000UL

42
# define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE / 3))

43


44
/* The Nios processor specific thread struct. */

45
struct thread_struct {

46
	struct pt_regs *kregs;

47


48
	/* Context switch saved kernel state. */

49
	unsigned long ksp;

50
	unsigned long kpsr;

51
};

52


53
# define INIT_THREAD {			\

54
	.kregs	= NULL,			\

55
	.ksp	= 0,			\

56
	.kpsr	= 0,			\

57
}

58


59
extern void start_thread(struct pt_regs *regs, unsigned long pc,

60
			unsigned long sp);

61


62
struct task_struct;

63


64
extern unsigned long __get_wchan(struct task_struct *p);

65


66
#define task_pt_regs(p) \

67
	((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1)

68


69
/* Used by procfs */

70
#define KSTK_EIP(tsk)	((tsk)->thread.kregs->ea)

71
#define KSTK_ESP(tsk)	((tsk)->thread.kregs->sp)

72


73
#define cpu_relax()	barrier()

74


75
#endif /* __ASSEMBLY__ */

76


77
#endif /* _ASM_NIOS2_PROCESSOR_H */

78


79