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/*
* Copyright (c) 2003-2005 The Regents of The University of Michigan
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Nathan Binkert
* Ali Saidi
*/
#include "arch/alpha/utility.hh"
#include "arch/alpha/vtophys.hh"
#include "mem/fs_translating_port_proxy.hh"
#include "sim/full_system.hh"
namespace AlphaISA {
uint64_t
getArgument(ThreadContext *tc, int &number, uint16_t size, bool fp)
{
if (!FullSystem) {
panic("getArgument() is Full system only\n");
M5_DUMMY_RETURN;
}
const int NumArgumentRegs = 6;
if (number < NumArgumentRegs) {
if (fp)
return tc->readFloatRegBits(16 + number);
else
return tc->readIntReg(16 + number);
} else {
Addr sp = tc->readIntReg(StackPointerReg);
FSTranslatingPortProxy &vp = tc->getVirtProxy();
uint64_t arg = vp.read<uint64_t>(sp +
(number-NumArgumentRegs) *
sizeof(uint64_t));
return arg;
}
}
void
copyRegs(ThreadContext *src, ThreadContext *dest)
{
// First loop through the integer registers.
for (int i = 0; i < NumIntRegs; ++i)
dest->setIntReg(i, src->readIntReg(i));
// Then loop through the floating point registers.
for (int i = 0; i < NumFloatRegs; ++i)
dest->setFloatRegBits(i, src->readFloatRegBits(i));
// Would need to add condition-code regs if implemented
assert(NumCCRegs == 0);
// Copy misc. registers
copyMiscRegs(src, dest);
// Lastly copy PC/NPC
dest->pcState(src->pcState());
}
void
copyMiscRegs(ThreadContext *src, ThreadContext *dest)
{
dest->setMiscRegNoEffect(MISCREG_FPCR,
src->readMiscRegNoEffect(MISCREG_FPCR));
dest->setMiscRegNoEffect(MISCREG_UNIQ,
src->readMiscRegNoEffect(MISCREG_UNIQ));
dest->setMiscRegNoEffect(MISCREG_LOCKFLAG,
src->readMiscRegNoEffect(MISCREG_LOCKFLAG));
dest->setMiscRegNoEffect(MISCREG_LOCKADDR,
src->readMiscRegNoEffect(MISCREG_LOCKADDR));
copyIprs(src, dest);
}
void
skipFunction(ThreadContext *tc)
{
TheISA::PCState newPC = tc->pcState();
newPC.set(tc->readIntReg(ReturnAddressReg));
tc->pcState(newPC);
}
} // namespace AlphaISA
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