Line data    Source code

       1            0 : /*
       2              :  * Copyright (c) 2021 Intel Corporation
       3              :  *
       4              :  * SPDX-License-Identifier: Apache-2.0
       5              :  */
       6              : 
       7              : #ifndef ZEPHYR_INCLUDE_ARCH_XTENSA_THREAD_H_
       8              : #define ZEPHYR_INCLUDE_ARCH_XTENSA_THREAD_H_
       9              : 
      10              : #include <stdint.h>
      11              : #ifndef _ASMLANGUAGE
      12              : 
      13              : #ifdef CONFIG_XTENSA_MPU
      14              : #include <zephyr/arch/xtensa/mpu.h>
      15              : #endif
      16              : 
      17              : #ifdef CONFIG_XTENSA_LAZY_HIFI_SHARING
      18              : #include <xtensa/config/tie.h>
      19              : #endif
      20              : 
      21              : /* Xtensa doesn't use these structs, but Zephyr core requires they be
      22              :  * defined so they can be included in struct _thread_base.  Dummy
      23              :  * field exists for sizeof compatibility with C++.
      24              :  */
      25              : 
      26              : struct _callee_saved {
      27              :         char dummy;
      28              : };
      29              : 
      30              : typedef struct _callee_saved _callee_saved_t;
      31              : 
      32              : struct _thread_arch {
      33              :         uint32_t last_cpu;
      34              : #ifdef CONFIG_USERSPACE
      35              : 
      36              : #ifdef CONFIG_XTENSA_MMU
      37              :         uint32_t *ptables;
      38              : #endif
      39              : 
      40              : #ifdef CONFIG_XTENSA_MPU
      41              :         /* Pointer to the memory domain's MPU map. */
      42              :         struct xtensa_mpu_map *mpu_map;
      43              : #endif
      44              : 
      45              :         /* Initial privilege mode stack pointer when doing a system call.
      46              :          * Un-set for surpervisor threads.
      47              :          */
      48              :         uint8_t *psp;
      49              : 
      50              :         /* Stashed PS value used to restore PS when restoring from
      51              :          * context switching or returning from non-nested interrupts.
      52              :          */
      53              :         uint32_t return_ps;
      54              : #endif
      55              : 
      56              : #ifdef CONFIG_XTENSA_LAZY_HIFI_SHARING
      57              :         /* A non-BSA region is required for lazy save/restore */
      58              :         uint8_t hifi_regs[XCHAL_CP1_SA_SIZE] __aligned(XCHAL_CP1_SA_ALIGN);
      59              : #endif
      60              : };
      61              : 
      62              : typedef struct _thread_arch _thread_arch_t;
      63              : 
      64              : #endif /* _ASMLANGUAGE */
      65              : 
      66              : #endif /* ZEPHYR_INCLUDE_ARCH_XTENSA_THREAD_H_ */