src/arch/sparc/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 __SPARC_PROCESS_HH__
  33 #define __SPARC_PROCESS_HH__
  34
  35 #include <string>
  36 #include <vector>
  37 #include "sim/byteswap.hh"
  38 #include "sim/process.hh"
  39
  40 class ObjectFile;
  41 class System;
  42
  43 class SparcLiveProcess : public LiveProcess
  44 {
  45   protected:
  46
  47     const Addr StackBias;
  48
  49     // The locations of the fill and spill handlers
  50     Addr fillStart, spillStart;
  51
  52     SparcLiveProcess(LiveProcessParams * params,
  53             ObjectFile *objFile, Addr _StackBias);
  54
  55     void initState();
  56
  57     template<class IntType>
  58     void argsInit(int pageSize);
  59
  60   public:
  61
  62     // Handles traps which request services from the operating system
  63     virtual void handleTrap(int trapNum, ThreadContext *tc);
  64
  65     Addr readFillStart() { return fillStart; }
  66     Addr readSpillStart() { return spillStart; }
  67
  68     virtual void flushWindows(ThreadContext *tc) = 0;
  69     void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
  70 };
  71
  72 class Sparc32LiveProcess : public SparcLiveProcess
  73 {
  74   protected:
  75
  76     Sparc32LiveProcess(LiveProcessParams * params, ObjectFile *objFile) :
  77             SparcLiveProcess(params, objFile, 0)
  78     {
  79         // Set up stack. On SPARC Linux, stack goes from the top of memory
  80         // downward, less the hole for the kernel address space.
  81         stack_base = (Addr)0xf0000000ULL;
  82
  83         // Set up region for mmaps.
  84         mmap_start = mmap_end = 0x70000000;
  85     }
  86
  87     void initState();
  88
  89   public:
  90
  91     void argsInit(int intSize, int pageSize);
  92
  93     void flushWindows(ThreadContext *tc);
  94
  95     SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
  96     void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
  97 };
  98
  99 class Sparc64LiveProcess : public SparcLiveProcess
 100 {
 101   protected:
 102
 103     Sparc64LiveProcess(LiveProcessParams * params, ObjectFile *objFile) :
 104             SparcLiveProcess(params, objFile, 2047)
 105     {
 106         // Set up stack. On SPARC Linux, stack goes from the top of memory
 107         // downward, less the hole for the kernel address space.
 108         stack_base = (Addr)0x80000000000ULL;
 109
 110         // Set up region for mmaps.  Tru64 seems to start just above 0 and
 111         // grow up from there.
 112         mmap_start = mmap_end = 0xfffff80000000000ULL;
 113     }
 114
 115     void initState();
 116
 117   public:
 118
 119     void argsInit(int intSize, int pageSize);
 120
 121     void flushWindows(ThreadContext *tc);
 122
 123     SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
 124     void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
 125 };
 126
 127 #endif // __SPARC_PROCESS_HH__