| 1 | |
| 2 | * Copyright (C) 2013 Altera Corporation
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| 3 | * Copyright (C) 2010 Tobias Klauser <[email protected]>
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| 4 | * Copyright (C) 2004 Microtronix Datacom Ltd
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| 5 | * Copyright (C) 2001 Ken Hill ([email protected])
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| 6 | * Vic Phillips ([email protected])
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| 7 | *
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| 8 | * based on SPARC asm/processor_32.h which is:
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| 9 | *
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| 10 | * Copyright (C) 1994 David S. Miller
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| 11 | *
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| 12 | * This file is subject to the terms and conditions of the GNU General Public
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| 13 | * License. See the file "COPYING" in the main directory of this archive
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| 14 | * for more details.
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| 15 |
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| 16 |
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| 17 | #ifndef _ASM_NIOS2_PROCESSOR_H
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| 18 | #define _ASM_NIOS2_PROCESSOR_H
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| 19 |
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| 20 | #include <asm/ptrace.h>
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| 21 | #include <asm/registers.h>
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| 22 | #include <asm/page.h>
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| 23 |
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| 24 | #define NIOS2_FLAG_KTHREAD 0x00000001
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| 25 |
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| 26 | #define NIOS2_OP_NOP 0x1883a
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| 27 | #define NIOS2_OP_BREAK 0x3da03a
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| 28 |
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| 29 | #ifdef __KERNEL__
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| 30 |
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| 31 | #define STACK_TOP TASK_SIZE
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| 32 | #define STACK_TOP_MAX STACK_TOP
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| 33 |
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| 34 | #endif
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| 35 |
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| 36 |
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| 37 | #define KUSER_BASE 0x1000
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| 38 | #define KUSER_SIZE (PAGE_SIZE)
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| 39 | #ifndef __ASSEMBLER__
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| 40 |
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| 41 | # define TASK_SIZE 0x7FFF0000UL
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| 42 | # define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
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| 43 |
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| 44 |
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| 45 | struct thread_struct {
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| 46 | struct pt_regs *kregs;
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| 47 |
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| 48 |
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| 49 | unsigned long ksp;
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| 50 | unsigned long kpsr;
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| 51 | };
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| 52 |
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| 53 | # define INIT_THREAD { \
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| 54 | .kregs = NULL, \
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| 55 | .ksp = 0, \
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| 56 | .kpsr = 0, \
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| 57 | }
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| 58 |
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| 59 | extern void start_thread(struct pt_regs *regs, unsigned long pc,
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| 60 | unsigned long sp);
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| 61 |
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| 62 | struct task_struct;
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| 63 |
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| 64 | extern unsigned long __get_wchan(struct task_struct *p);
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| 65 |
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| 66 | #define task_pt_regs(p) \
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| 67 | ((struct pt_regs *)(THREAD_SIZE + task_stack_page(p)) - 1)
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| 68 |
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| 69 |
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| 70 | #define KSTK_EIP(tsk) ((tsk)->thread.kregs->ea)
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| 71 | #define KSTK_ESP(tsk) ((tsk)->thread.kregs->sp)
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| 72 |
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| 73 | #define cpu_relax() barrier()
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| 74 |
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| 75 | #endif
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| 76 |
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| 77 | #endif
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