src/arch/sparc/interrupts.hh

   1 /*
   2  * Copyright (c) 2006 The Regents of The University of Michigan
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met: redistributions of source code must retain the above copyright
   8  * notice, this list of conditions and the following disclaimer;
   9  * redistributions in binary form must reproduce the above copyright
  10  * notice, this list of conditions and the following disclaimer in the
  11  * documentation and/or other materials provided with the distribution;
  12  * neither the name of the copyright holders nor the names of its
  13  * contributors may be used to endorse or promote products derived from
  14  * this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  17  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  18  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  19  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  20  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  21  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  22  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * Authors: Gabe Black
  29  */
  30
  31 #ifndef __ARCH_SPARC_INTERRUPT_HH__
  32 #define __ARCH_SPARC_INTERRUPT_HH__
  33
  34 #include "arch/sparc/faults.hh"
  35
  36 namespace SparcISA
  37 {
  38     class Interrupts
  39     {
  40       protected:
  41         Fault interrupts[NumInterruptLevels];
  42         bool requested[NumInterruptLevels];
  43
  44       public:
  45         Interrupts()
  46         {
  47             for(int x = 0; x < NumInterruptLevels; x++)
  48             {
  49                 interrupts[x] = new InterruptLevelN(x);
  50                 requested[x] = false;
  51             }
  52         }
  53         void post(int int_num, int index)
  54         {
  55             if(int_num < 0 || int_num >= NumInterruptLevels)
  56                 panic("int_num out of bounds\n");
  57
  58             requested[int_num] = true;
  59         }
  60
  61         void clear(int int_num, int index)
  62         {
  63             requested[int_num] = false;
  64         }
  65
  66         void clear_all()
  67         {
  68             for(int x = 0; x < NumInterruptLevels; x++)
  69                 requested[x] = false;
  70         }
  71
  72         bool check_interrupts(ThreadContext * tc) const
  73         {
  74             return true;
  75         }
  76
  77         Fault getInterrupt(ThreadContext * tc)
  78         {
  79             return NoFault;
  80         }
  81
  82         void serialize(std::ostream &os)
  83         {
  84         }
  85
  86         void unserialize(Checkpoint *cp, const std::string &section)
  87         {
  88         }
  89     };
  90 }
  91
  92 #endif // __ARCH_SPARC_INTERRUPT_HH__