arch/alpha/arguments.cc

   1 /*
   2  * Copyright (c) 2003-2005 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
  29 #include "arch/alpha/arguments.hh"
  30 #include "arch/alpha/vtophys.hh"
  31 #include "cpu/exec_context.hh"
  32 #include "mem/vport.hh"
  33
  34 using namespace AlphaISA;
  35
  36 AlphaArguments::Data::~Data()
  37 {
  38     while (!data.empty()) {
  39         delete [] data.front();
  40         data.pop_front();
  41     }
  42 }
  43
  44 char *
  45 AlphaArguments::Data::alloc(size_t size)
  46 {
  47     char *buf = new char[size];
  48     data.push_back(buf);
  49     return buf;
  50 }
  51
  52 uint64_t
  53 AlphaArguments::getArg(bool fp)
  54 {
  55     if (number < 6) {
  56         if (fp)
  57             return xc->readFloatRegBits(16 + number);
  58         else
  59             return xc->readIntReg(16 + number);
  60     } else {
  61         Addr sp = xc->readIntReg(30);
  62         VirtualPort *vp = xc->getVirtPort(xc);
  63         uint64_t arg = vp->read<uint64_t>(sp + (number-6) * sizeof(uint64_t));
  64         xc->delVirtPort(vp);
  65         return arg;
  66     }
  67 }
  68