thread.h

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/*
 * Copyright (c) 2021 Intel Corporation
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_ARCH_XTENSA_THREAD_H_
#define ZEPHYR_INCLUDE_ARCH_XTENSA_THREAD_H_
 
#include <stdint.h>
#ifndef _ASMLANGUAGE
 
#ifdef CONFIG_XTENSA_MPU
#include <zephyr/arch/xtensa/mpu.h>
#endif
 
/* Xtensa doesn't use these structs, but Zephyr core requires they be
 * defined so they can be included in struct _thread_base.  Dummy
 * field exists for sizeof compatibility with C++.
 */
 
struct _callee_saved {
        char dummy;
};
 
typedef struct _callee_saved _callee_saved_t;
 
struct _thread_arch {
        uint32_t last_cpu;
#ifdef CONFIG_USERSPACE
 
#ifdef CONFIG_XTENSA_MMU
        uint32_t *ptables;
#endif
 
#ifdef CONFIG_XTENSA_MPU
        /* Pointer to the memory domain's MPU map. */
        struct xtensa_mpu_map *mpu_map;
#endif
 
        /* Initial privilege mode stack pointer when doing a system call.
         * Un-set for surpervisor threads.
         */
        uint8_t *psp;
#endif
};
 
typedef struct _thread_arch _thread_arch_t;
 
#endif /* _ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_XTENSA_THREAD_H_ */