74 lines
2.7 KiB
C++
74 lines
2.7 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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*/
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#include "arch/sparc/arguments.hh"
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#include "arch/sparc/vtophys.hh"
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#include "cpu/thread_context.hh"
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#include "mem/vport.hh"
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using namespace SparcISA;
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Arguments::Data::~Data()
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{
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while (!data.empty()) {
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delete [] data.front();
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data.pop_front();
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}
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}
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char *
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Arguments::Data::alloc(size_t size)
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{
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char *buf = new char[size];
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data.push_back(buf);
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return buf;
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}
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uint64_t
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Arguments::getArg(bool fp)
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{
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//The caller uses %o0-%05 for the first 6 arguments even if their floating
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//point. Double precision floating point values take two registers/args.
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//Quads, structs, and unions are passed as pointers. All arguments beyond
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//the sixth are passed on the stack past the 16 word window save area,
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//space for the struct/union return pointer, and space reserved for the
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//first 6 arguments which the caller may use but doesn't have to.
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if (number < 6) {
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return tc->readIntReg(8 + number);
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} else {
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Addr sp = tc->readIntReg(14);
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VirtualPort *vp = tc->getVirtPort(tc);
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uint64_t arg = vp->read<uint64_t>(sp + 92 + (number-6) * sizeof(uint64_t));
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tc->delVirtPort(vp);
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return arg;
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}
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}
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