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/*
 * Copyright (c) 2016 Intel Corporation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file
 * @brief Private kernel definitions
 *
 * This file contains private kernel function/macro definitions and various
 * other definitions for the Nios II processor architecture.
 *
 * This file is also included by assembly language files which must #define
 * _ASMLANGUAGE before including this header file.  Note that kernel
 * assembly source files obtains structure offset values via "absolute
 * symbols" in the offsets.o module.
 */

#ifndef _kernel_arch_func__h_
#define _kernel_arch_func__h_

#ifdef __cplusplus
extern "C" {
#endif

#ifndef _ASMLANGUAGE

void nano_cpu_idle(void);
void nano_cpu_atomic_idle(unsigned int key);

static ALWAYS_INLINE void nanoArchInit(void)
{
	_kernel.irq_stack = _interrupt_stack + CONFIG_ISR_STACK_SIZE;
}

static ALWAYS_INLINE void
_set_thread_return_value(struct k_thread *thread, unsigned int value)
{
	thread->callee_saved.retval = value;
}

static inline void _IntLibInit(void)
{
	/* No special initialization of the interrupt subsystem required */
}

FUNC_NORETURN void _NanoFatalErrorHandler(unsigned int reason,
					  const NANO_ESF * esf);


#define _is_in_isr() (_kernel.nested != 0)

#ifdef CONFIG_IRQ_OFFLOAD
void _irq_do_offload(void);
#endif

#if ALT_CPU_ICACHE_SIZE > 0
void _nios2_icache_flush_all(void);
#else
#define _nios2_icache_flush_all() do { } while (0)
#endif

#if ALT_CPU_DCACHE_SIZE > 0
void _nios2_dcache_flush_all(void);
#else
#define _nios2_dcache_flush_all() do { } while (0)
#endif

#endif /* _ASMLANGUAGE */

#ifdef __cplusplus
}
#endif

#endif /* _kernel_arch_func__h_ */