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
  38 #include "mem/page_table.hh"
  39 #include "sim/byteswap.hh"
  40 #include "sim/process.hh"
  41
  42 class ObjectFile;
  43
  44 class SparcProcess : public Process
  45 {
  46   protected:
  47
  48     const Addr StackBias;
  49
  50     // The locations of the fill and spill handlers
  51     Addr fillStart, spillStart;
  52
  53     SparcProcess(ProcessParams * params, ObjectFile *objFile,
  54                  Addr _StackBias);
  55
  56     void initState();
  57
  58     template<class IntType>
  59     void argsInit(int pageSize);
  60
  61   public:
  62
  63     // Handles traps which request services from the operating system
  64     virtual void handleTrap(int trapNum, ThreadContext *tc);
  65
  66     Addr readFillStart() { return fillStart; }
  67     Addr readSpillStart() { return spillStart; }
  68
  69     virtual void flushWindows(ThreadContext *tc) = 0;
  70     void setSyscallReturn(ThreadContext *tc, SyscallReturn return_value);
  71 };
  72
  73 class Sparc32Process : public SparcProcess
  74 {
  75   protected:
  76
  77     Sparc32Process(ProcessParams * params, ObjectFile *objFile)
  78         : SparcProcess(params, objFile, 0)
  79     {
  80         // Set up stack. On SPARC Linux, stack goes from the top of memory
  81         // downward, less the hole for the kernel address space.
  82         stack_base = (Addr)0xf0000000ULL;
  83
  84         // Set up region for mmaps.
  85         mmap_end = 0x70000000;
  86     }
  87
  88     void initState();
  89
  90   public:
  91
  92     void argsInit(int intSize, int pageSize);
  93
  94     void flushWindows(ThreadContext *tc);
  95
  96     SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
  97     /// Explicitly import the otherwise hidden getSyscallArg
  98     using Process::getSyscallArg;
  99
 100     void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
 101 };
 102
 103 class Sparc64Process : public SparcProcess
 104 {
 105   protected:
 106
 107     Sparc64Process(ProcessParams * params, ObjectFile *objFile)
 108         : SparcProcess(params, objFile, 2047)
 109     {
 110         // Set up stack. On SPARC Linux, stack goes from the top of memory
 111         // downward, less the hole for the kernel address space.
 112         stack_base = (Addr)0x80000000000ULL;
 113
 114         // Set up region for mmaps.
 115         mmap_end = 0xfffff80000000000ULL;
 116     }
 117
 118     void initState();
 119
 120   public:
 121
 122     void argsInit(int intSize, int pageSize);
 123
 124     void flushWindows(ThreadContext *tc);
 125
 126     SparcISA::IntReg getSyscallArg(ThreadContext *tc, int &i);
 127     /// Explicitly import the otherwise hidden getSyscallArg
 128     using Process::getSyscallArg;
 129
 130     void setSyscallArg(ThreadContext *tc, int i, SparcISA::IntReg val);
 131 };
 132
 133 /* No architectural page table defined for this ISA */
 134 typedef NoArchPageTable ArchPageTable;
 135
 136 #endif // __SPARC_PROCESS_HH__