mirror of
https://github.com/espressif/esp-idf.git
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7b294c4ab9
Moved the linux spinlock.h stub into esp_hw_support/include/linux. esp_hw_support's INCLUDE_DIRS already places include/linux before include, so the correct include files are picked up for the linux target. - Drop the FreeRTOS-Kernel-SMP linux spinlock.h duplicate. - rv_decode_test: use PRIV_REQUIRES esp_hw_support instead of hardcoding component include paths.
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* This file provides only very simple stubs to build IDF-based FreeRTOSes which use spinlocks on Linux.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define SPINLOCK_FREE 0xB33FFFFF
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#define SPINLOCK_WAIT_FOREVER (-1)
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#define SPINLOCK_NO_WAIT 0
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#define SPINLOCK_INITIALIZER {.owner = SPINLOCK_FREE,.count = 0}
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#define CORE_ID_REGVAL_XOR_SWAP (0xCDCD ^ 0xABAB)
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/**
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* @brief Spinlock object
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* Owner:
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* - Set to 0 if uninitialized
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* - Set to portMUX_FREE_VAL when free
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* - Set to CORE_ID_REGVAL_PRO or CORE_ID_REGVAL_AP when locked
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* - Any other value indicates corruption
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* Count:
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* - 0 if unlocked
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* - Recursive count if locked
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*
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* @note Not a true spinlock as single core RISC-V does not have atomic compare and set instruction
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* @note Keep portMUX_INITIALIZER_UNLOCKED in sync with this struct
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*/
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typedef struct {
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uint32_t owner;
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uint32_t count;
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}spinlock_t;
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static inline void __attribute__((always_inline)) spinlock_initialize(spinlock_t *lock)
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{
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}
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static inline bool __attribute__((always_inline)) spinlock_acquire(spinlock_t *lock, int32_t timeout)
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{
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return true;
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}
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static inline void __attribute__((always_inline)) spinlock_release(spinlock_t *lock)
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{
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}
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#ifdef __cplusplus
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}
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#endif
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