6a3c2aded6
* Simplify EINTR/ECANCEL error handling 1. Add semaphore uninterruptible wait function 2 .Replace semaphore wait loop with a single uninterruptible wait 3. Replace all sem_xxx to nxsem_xxx * Unify the void cast usage 1. Remove void cast for function because many place ignore the returned value witout cast 2. Replace void cast for variable with UNUSED macro
122 lines
3.6 KiB
C
122 lines
3.6 KiB
C
/****************************************************************************
|
|
* arch/z80/src/common/z80_doirq.c
|
|
*
|
|
* Copyright (C) 2007-2009, 2014-2015 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 <stdint.h>
|
|
#include <assert.h>
|
|
#include "up_arch.h"
|
|
|
|
#include <nuttx/irq.h>
|
|
#include <nuttx/arch.h>
|
|
#include <nuttx/board.h>
|
|
|
|
#include <arch/irq.h>
|
|
|
|
#include "chip/switch.h"
|
|
#include "z80_internal.h"
|
|
|
|
#include "group/group.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
FAR chipreg_t *z80_doirq(uint8_t irq, FAR chipreg_t *regs)
|
|
{
|
|
board_autoled_on(LED_INIRQ);
|
|
|
|
#ifdef CONFIG_SUPPRESS_INTERRUPTS
|
|
|
|
IRQ_ENTER(regs);
|
|
err("ERROR: Unexpected IRQ\n");
|
|
PANIC();
|
|
return NULL; /* Won't get here */
|
|
|
|
#else
|
|
#ifdef CONFIG_ARCH_ADDRENV
|
|
FAR chipreg_t *newregs;
|
|
#endif
|
|
|
|
if (irq < NR_IRQS)
|
|
{
|
|
DECL_SAVESTATE();
|
|
|
|
/* Indicate that we have entered IRQ processing logic */
|
|
|
|
IRQ_ENTER(irq, regs);
|
|
|
|
/* Deliver the IRQ */
|
|
|
|
irq_dispatch(irq, regs);
|
|
|
|
#ifdef CONFIG_ARCH_ADDRENV
|
|
/* If a context switch occurred, 'newregs' will hold the new context */
|
|
|
|
newregs = IRQ_STATE();
|
|
|
|
if (newregs != regs)
|
|
{
|
|
/* Make sure that the address environment for the previously
|
|
* running task is closed down gracefully and set up the
|
|
* address environment for the new thread at the head of the
|
|
* ready-to-run list.
|
|
*/
|
|
|
|
group_addrenv(NULL);
|
|
}
|
|
|
|
regs = newregs;
|
|
|
|
#else
|
|
/* If a context switch occurred, 'regs' will hold the new context */
|
|
|
|
regs = IRQ_STATE();
|
|
#endif
|
|
|
|
/* Indicate that we are no longer in interrupt processing logic */
|
|
|
|
IRQ_LEAVE(irq);
|
|
}
|
|
|
|
board_autoled_off(LED_INIRQ);
|
|
return regs;
|
|
#endif
|
|
}
|