src/arch/arm/linux/process.hh

   1 /*
   2 * Copyright (c) 2011-2012 ARM Limited
   3  * All rights reserved
   4  *
   5  * The license below extends only to copyright in the software and shall
   6  * not be construed as granting a license to any other intellectual
   7  * property including but not limited to intellectual property relating
   8  * to a hardware implementation of the functionality of the software
   9  * licensed hereunder.  You may use the software subject to the license
  10  * terms below provided that you ensure that this notice is replicated
  11  * unmodified and in its entirety in all distributions of the software,
  12  * modified or unmodified, in source code or in binary form.
  13  *
  14  * Copyright (c) 2007-2008 The Florida State University
  15  * All rights reserved.
  16  *
  17  * Redistribution and use in source and binary forms, with or without
  18  * modification, are permitted provided that the following conditions are
  19  * met: redistributions of source code must retain the above copyright
  20  * notice, this list of conditions and the following disclaimer;
  21  * redistributions in binary form must reproduce the above copyright
  22  * notice, this list of conditions and the following disclaimer in the
  23  * documentation and/or other materials provided with the distribution;
  24  * neither the name of the copyright holders nor the names of its
  25  * contributors may be used to endorse or promote products derived from
  26  * this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  30  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  31  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  32  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  33  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  34  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  35  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  36  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  37  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  38  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  39  *
  40  * Authors: Stephen Hines
  41  */
  42
  43 #ifndef __ARM_LINUX_PROCESS_HH__
  44 #define __ARM_LINUX_PROCESS_HH__
  45
  46 #include <vector>
  47
  48 #include "arch/arm/process.hh"
  49
  50 class ArmLinuxProcessBits
  51 {
  52   protected:
  53     SyscallDesc* getLinuxDesc(int callnum);
  54
  55     struct SyscallTable
  56     {
  57         int base;
  58         SyscallDesc *descs;
  59         int size;
  60
  61         SyscallDesc *getDesc(int offset) const;
  62     };
  63
  64     std::vector<SyscallTable> syscallTables;
  65 };
  66
  67 /// A process with emulated Arm/Linux syscalls.
  68 class ArmLinuxProcess32 : public ArmLiveProcess32, public ArmLinuxProcessBits
  69 {
  70   public:
  71     ArmLinuxProcess32(LiveProcessParams * params, ObjectFile *objFile,
  72                       ObjectFile::Arch _arch);
  73
  74     void initState();
  75
  76     /// Explicitly import the otherwise hidden getSyscallArg
  77     using ArmLiveProcess::getSyscallArg;
  78
  79     /// A page to hold "kernel" provided functions. The name might be wrong.
  80     static const Addr commPage;
  81
  82     SyscallDesc* getDesc(int callnum);
  83 };
  84
  85 /// A process with emulated Arm/Linux syscalls.
  86 class ArmLinuxProcess64 : public ArmLiveProcess64, public ArmLinuxProcessBits
  87 {
  88   public:
  89     ArmLinuxProcess64(LiveProcessParams * params, ObjectFile *objFile,
  90                       ObjectFile::Arch _arch);
  91
  92     void initState();
  93     SyscallDesc* getDesc(int callnum);
  94 };
  95
  96 #endif // __ARM_LINUX_PROCESS_HH__