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/*
* Copyright (c) 2014-2016 Wind River Systems, Inc.
*
* 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 structures definitions and various
* other definitions for the ARCv2 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
#if !defined(_ASMLANGUAGE)
#ifdef CONFIG_CPU_ARCV2
#include <v2/cache.h>
#include <v2/irq.h>
#endif
static ALWAYS_INLINE void nanoArchInit(void)
{
_icache_setup();
_irq_setup();
}
static ALWAYS_INLINE void
_set_thread_return_value(struct k_thread *thread, unsigned int value)
{
thread->arch.return_value = value;
}
static ALWAYS_INLINE int _is_in_isr(void)
{
uint32_t act = _arc_v2_aux_reg_read(_ARC_V2_AUX_IRQ_ACT);
#if CONFIG_IRQ_OFFLOAD
/* Check if we're in a TRAP_S exception as well */
if (_arc_v2_aux_reg_read(_ARC_V2_STATUS32) & _ARC_V2_STATUS32_AE &&
_ARC_V2_ECR_VECTOR(_arc_v2_aux_reg_read(_ARC_V2_ECR)) == EXC_EV_TRAP
) {
return 1;
}
#endif
return ((act & 0xffff) != 0);
}
/**
*
* @bried Indicates the interrupt number of the highest priority
* active interrupt
*
* @return IRQ number
*/
static ALWAYS_INLINE int _INTERRUPT_CAUSE(void)
{
uint32_t irq_num = _arc_v2_aux_reg_read(_ARC_V2_ICAUSE);
return irq_num;
}
extern void _thread_entry_wrapper(void);
static inline void _IntLibInit(void)
{
/* nothing needed, here because the kernel requires it */
}
#endif /* _ASMLANGUAGE */
#ifdef __cplusplus
}
#endif
#endif /* _kernel_arch_func__h_ */