128 lines
2.8 KiB
C
128 lines
2.8 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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* Copyright (c) 2016 Wind River Systems, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* @file
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* @brief Private kernel definitions
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*
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* This file contains private kernel structures definitions and various
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* other definitions for the Nios II processor architecture.
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*
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* This file is also included by assembly language files which must #define
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* _ASMLANGUAGE before including this header file. Note that kernel
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* assembly source files obtains structure offset values via "absolute
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* symbols" in the offsets.o module.
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*/
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#ifndef _kernel_arch_data__h_
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#define _kernel_arch_data__h_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <toolchain.h>
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#include <sections.h>
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#include <arch/cpu.h>
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#ifndef _ASMLANGUAGE
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#include <kernel.h>
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#include <nano_internal.h>
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#include <stdint.h>
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#include <misc/util.h>
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#include <misc/dlist.h>
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#endif
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/* nios2 bitmask definitions for the struct k_thread->flags bit field */
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/* 1 = executing context is interrupt handler */
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#define INT_ACTIVE (1 << 1)
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/* 1 = executing context is exception handler */
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#define EXC_ACTIVE (1 << 2)
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/* stacks */
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#define STACK_ALIGN_SIZE 4
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#define STACK_ROUND_UP(x) ROUND_UP(x, STACK_ALIGN_SIZE)
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#define STACK_ROUND_DOWN(x) ROUND_DOWN(x, STACK_ALIGN_SIZE)
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#ifndef _ASMLANGUAGE
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struct _caller_saved {
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/*
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* Nothing here, the exception code puts all the caller-saved
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* registers onto the stack.
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*/
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};
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typedef struct _caller_saved _caller_saved_t;
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struct _callee_saved {
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/* General purpose callee-saved registers */
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uint32_t r16;
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uint32_t r17;
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uint32_t r18;
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uint32_t r19;
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uint32_t r20;
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uint32_t r21;
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uint32_t r22;
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uint32_t r23;
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/* Normally used for the frame pointer but also a general purpose
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* register if frame pointers omitted
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*/
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uint32_t r28;
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/* Return address */
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uint32_t ra;
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/* Stack pointer */
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uint32_t sp;
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/* IRQ status before irq_lock() and call to _Swap() */
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uint32_t key;
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/* Return value of _Swap() */
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uint32_t retval;
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};
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typedef struct _callee_saved _callee_saved_t;
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struct _thread_arch {
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/* nothing for now */
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};
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typedef struct _thread_arch _thread_arch_t;
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struct _kernel_arch {
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/* nothing for now */
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};
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typedef struct _kernel_arch _kernel_arch_t;
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extern char _interrupt_stack[CONFIG_ISR_STACK_SIZE];
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#endif /* _ASMLANGUAGE */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _kernel_arch_data__h_ */
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