nuttx/arch/mips/include/mips32/irq.h

/****************************************************************************
 * arch/mips/include/mips32/irq.h
 *
 *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
 *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ****************************************************************************/

/* This file should never be included directed but, rather, only indirectly
 * through nuttx/irq.h
 */

#ifndef __ARCH_MIPS_INCLUDE_MIPS32_IRQ_H
#define __ARCH_MIPS_INCLUDE_MIPS32_IRQ_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <arch/types.h>

/****************************************************************************
 * Definitions
 ****************************************************************************/

/* Lots of missing logic here */

#define XCPTCONTEXT_REGS 1

/****************************************************************************
 * Public Types
 ****************************************************************************/

#ifndef __ASSEMBLY__

struct xcptcontext
{
  /* The following function pointer is non-NULL if there are pending signals
   * to be processed.
   */

#ifndef CONFIG_DISABLE_SIGNALS
  void *sigdeliver; /* Actual type is sig_deliver_t */
#endif

  /* Register save area */

  uint32_t regs[XCPTCONTEXT_REGS];
};

/****************************************************************************
 * Inline functions
 ****************************************************************************/

/****************************************************************************
 * Public Variables
 ****************************************************************************/

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif

/****************************************************************************
 * Name: irqsave
 *
 * Description:
 *   Save the current interrupt state and disable interrupts.
 *
 * Input Parameters:
 *   None
 *
 * Returned Value:
 *   Interrupt state prior to disabling interrupts.
 *
 ****************************************************************************/

EXTERN irqstate_t irqsave(void);

/****************************************************************************
 * Name: irqrestore
 *
 * Description:
 *   Restore the previous interrupt state (i.e., the one previously returned
 *   by irqsave())
 *
 * Input Parameters:
 *   state - The interrupt state to be restored.
 *
 * Returned Value:
 *   None
 *
 ****************************************************************************/

EXTERN void irqrestore(irqstate_t irqtate);

#undef EXTERN
#ifdef __cplusplus
}
#endif

#endif /* __ASSEMBLY */
#endif /* __ARCH_MIPS_INCLUDE_MIPS32_IRQ_H */