neorv32_hwspinlock.h

Go to the documentation of this file.

// ================================================================================ //
// The NEORV32 RISC-V Processor - https://github.com/stnolting/neorv32              //
// Copyright (c) NEORV32 contributors.                                              //
// Copyright (c) 2020 - 2025 Stephan Nolting. All rights reserved.                  //
// Licensed under the BSD-3-Clause license, see LICENSE for details.                //
// SPDX-License-Identifier: BSD-3-Clause                                            //
// ================================================================================ //

 
#ifndef NEORV32_HWSPINLOCK_H
#define NEORV32_HWSPINLOCK_H
 
#include <stdint.h>
 
 
/**********************************************************************/
typedef volatile struct __attribute__((packed,aligned(4))) {
        uint32_t LOCK[32]; 
  const uint32_t STATUS;   
} neorv32_hwspinlock_t;

#define NEORV32_HWSPINLOCK ((neorv32_hwspinlock_t*) (NEORV32_HWSPINLOCK_BASE))
 
 
/**********************************************************************/
int  neorv32_hwspinlock_available(void);
int  neorv32_hwspinlock_acquire(int select);
void neorv32_hwspinlock_acquire_blocking(int select);
void neorv32_hwspinlock_release(int select);
int  neorv32_hwspinlock_probe(int select);
void neorv32_hwspinlock_clear(void);
 
 
#endif // NEORV32_HWSPINLOCK_H