127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/************************************************************
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* irq.h
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*
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* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************/
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/* This file should never be included directed but, rather,
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* only indirectly through nuttx/irq.h
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*/
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#ifndef __ARCH_IRQ_H
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#define __ARCH_IRQ_H
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/************************************************************
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* Included Files
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************************************************************/
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/************************************************************
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* Pre-processor Definitions
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************************************************************/
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/* No interrupts */
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#define NR_IRQS 0
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/* Number of registers saved in context switch */
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#if defined(CONFIG_HOST_X86_64) && !defined(CONFIG_SIM_M32)
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/* Storage order: %rbx, %rsp, %rbp, %r12, %r13, %r14, %r15, %rip */
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# define XCPTCONTEXT_REGS 8
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#else
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/* Storage order: %ebx, %esi, %edi, %ebp, sp, and return PC */
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# define XCPTCONTEXT_REGS 6
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#endif
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/************************************************************
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* Public Types
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************************************************************/
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#ifndef __ASSEMBLY__
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/* Number of registers saved in context switch */
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#if defined(CONFIG_HOST_X86_64) && !defined(CONFIG_SIM_M32)
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typedef unsigned long xcpt_reg_t;
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#else
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typedef int xcpt_reg_t;
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#endif
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/* This struct defines the way the registers are stored */
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struct xcptcontext
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{
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void *sigdeliver; /* Actual type is sig_deliver_t */
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xcpt_reg_t regs[XCPTCONTEXT_REGS];
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};
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#endif
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/************************************************************
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* Inline functions
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************************************************************/
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#ifndef __ASSEMBLY__
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static inline irqstate_t irqsave(void)
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{
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return 0;
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}
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static inline void irqrestore(irqstate_t flags)
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{
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}
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#endif
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/************************************************************
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* Public Variables
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************************************************************/
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/************************************************************
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* Public Function Prototypes
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************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ARCH_IRQ_H */
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