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Diffstat (limited to 'nuttx/sched/irq_dispatch.c')
-rw-r--r-- | nuttx/sched/irq_dispatch.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/nuttx/sched/irq_dispatch.c b/nuttx/sched/irq_dispatch.c new file mode 100644 index 000000000..1c39f59d1 --- /dev/null +++ b/nuttx/sched/irq_dispatch.c @@ -0,0 +1,105 @@ +/**************************************************************************** + * sched/irq_dispatch.c + * + * Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * 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. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#include <debug.h> +#include <nuttx/arch.h> +#include <nuttx/irq.h> + +#include "irq_internal.h" + +/**************************************************************************** + * Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Type Declarations + ****************************************************************************/ + +/**************************************************************************** + * Global Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Variables + ****************************************************************************/ + +/**************************************************************************** + * Private Function Prototypes + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: irq_dispatch + * + * Description: + * This function must be called from the achitecture-specific logic in + * order to dispatch an interrupt to the appropriate, registered handling + * logic. + * + ***************************************************************************/ + +void irq_dispatch(int irq, FAR void *context) +{ + xcpt_t vector; + + /* Perform some sanity checks */ + +#if NR_IRQS > 0 + if ((unsigned)irq >= NR_IRQS || g_irqvector[irq] == NULL) + { + vector = irq_unexpected_isr; + } + else + { + vector = g_irqvector[irq]; + } +#else + vector = irq_unexpected_isr; +#endif + + /* Then dispatch to the interrupt handler */ + + vector(irq, context); +} + |