src/arch/riscv/process.hh

   1 /*
   2  * Copyright (c) 2006 The Regents of The University of Michigan
   3  * Copyright (c) 2017 The University of Virginia
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions are
   8  * met: redistributions of source code must retain the above copyright
   9  * notice, this list of conditions and the following disclaimer;
  10  * redistributions in binary form must reproduce the above copyright
  11  * notice, this list of conditions and the following disclaimer in the
  12  * documentation and/or other materials provided with the distribution;
  13  * neither the name of the copyright holders nor the names of its
  14  * contributors may be used to endorse or promote products derived from
  15  * this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  20  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  21  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  22  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  23  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  */
  29
  30 #ifndef __RISCV_PROCESS_HH__
  31 #define __RISCV_PROCESS_HH__
  32
  33 #include <string>
  34 #include <vector>
  35
  36 #include "mem/page_table.hh"
  37 #include "sim/process.hh"
  38
  39 class ObjectFile;
  40 class System;
  41
  42 class RiscvProcess : public Process
  43 {
  44   protected:
  45     RiscvProcess(ProcessParams * params, ObjectFile *objFile);
  46     template<class IntType>
  47     void argsInit(int pageSize);
  48
  49   public:
  50     RegVal getSyscallArg(ThreadContext *tc, int &i) override;
  51     /// Explicitly import the otherwise hidden getSyscallArg
  52     using Process::getSyscallArg;
  53     void setSyscallReturn(ThreadContext *tc,
  54                           SyscallReturn return_value) override;
  55
  56     virtual bool mmapGrowsDown() const override { return false; }
  57 };
  58
  59 class RiscvProcess64 : public RiscvProcess
  60 {
  61   protected:
  62     RiscvProcess64(ProcessParams * params, ObjectFile *objFile);
  63     void initState() override;
  64 };
  65
  66 class RiscvProcess32 : public RiscvProcess
  67 {
  68   protected:
  69     RiscvProcess32(ProcessParams * params, ObjectFile *objFile);
  70     void initState() override;
  71 };
  72
  73 #endif // __RISCV_PROCESS_HH__