src/arch/alpha/process.hh

   1 /*
   2  * Copyright (c) 2003-2004 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  *          Ali Saidi
  30  */
  31
  32 #ifndef __ARCH_ALPHA_PROCESS_HH__
  33 #define __ARCH_ALPHA_PROCESS_HH__
  34
  35 #include "mem/page_table.hh"
  36 #include "sim/process.hh"
  37
  38 class AlphaProcess : public Process
  39 {
  40   private:
  41     void setupASNReg();
  42
  43   protected:
  44     AlphaProcess(ProcessParams *params, ObjectFile *objFile);
  45
  46     void unserialize(CheckpointIn &cp) override;
  47     void initState() override;
  48
  49     void argsInit(int intSize, int pageSize);
  50
  51   public:
  52     RegVal getSyscallArg(ThreadContext *tc, int &i) override;
  53     /// Explicitly import the otherwise hidden getSyscallArg
  54     using Process::getSyscallArg;
  55     void setSyscallReturn(ThreadContext *tc,
  56                           SyscallReturn return_value) override;
  57
  58     // override default implementation in Process as the mmap
  59     // region for Alpha platforms grows upward
  60     virtual bool mmapGrowsDown() const override { return false; }
  61 };
  62
  63 #endif // __ARCH_ALPHA_PROCESS_HH__