gem5/cpu/exec_context.cc
Steve Reinhardt 1511370d09 More progress on checkpointing... we can now write out a checkpoint and read it back in,
though most objects don't actually serialize any data.

arch/alpha/alpha_memory.cc:
arch/alpha/alpha_memory.hh:
arch/alpha/isa_traits.hh:
cpu/exec_context.cc:
cpu/exec_context.hh:
cpu/simple_cpu/simple_cpu.hh:
dev/alpha_access.h:
dev/alpha_console.cc:
dev/alpha_console.hh:
dev/console.cc:
dev/console.hh:
    Change unserialize param from IniFile& to const IniFile*.
cpu/simple_cpu/simple_cpu.cc:
    Change unserialize param from IniFile& to const IniFile*.
    Make unserialize call ExecContext::unserialize.
sim/eventq.cc:
    Rename MainEventQueue (no spaces) for easier parsing in checkpoints.
    Disable event serialization for now, so we can focus on the easy stuff.
sim/serialize.cc:
    Change paramIn and arrayParamIn param from IniFile& to const IniFile*.
sim/serialize.hh:
    Change unserialize, paramIn, and arrayParamIn params from IniFile& to const IniFile*.

--HG--
extra : convert_revision : 6e8853ed375eddec0e140c95a01dd51bd225f7b9
2003-10-29 00:41:24 -08:00

140 lines
4.2 KiB
C++

/*
* Copyright (c) 2003 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.
*/
#include <string>
#include "cpu/base_cpu.hh"
#include "cpu/exec_context.hh"
#ifdef FULL_SYSTEM
#include "sim/system.hh"
#else
#include "sim/prog.hh"
#endif
using namespace std;
// constructor
#ifdef FULL_SYSTEM
ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num, System *_sys,
AlphaItb *_itb, AlphaDtb *_dtb,
FunctionalMemory *_mem)
: _status(ExecContext::Unallocated),
kernelStats(this, _cpu), cpu(_cpu), thread_num(_thread_num),
cpu_id(-1), mem(_mem), itb(_itb), dtb(_dtb), system(_sys),
memCtrl(_sys->memCtrl), physmem(_sys->physmem),
func_exe_insn(0), storeCondFailures(0)
{
memset(&regs, 0, sizeof(RegFile));
}
#else
ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
Process *_process, int _asid)
: _status(ExecContext::Unallocated),
cpu(_cpu), thread_num(_thread_num), cpu_id(-1),
process(_process), mem(process->getMemory()), asid(_asid),
func_exe_insn(0), storeCondFailures(0)
{
}
ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
FunctionalMemory *_mem, int _asid)
: cpu(_cpu), thread_num(_thread_num), process(0), mem(_mem), asid(_asid),
func_exe_insn(0), storeCondFailures(0)
{
}
#endif
void
ExecContext::takeOverFrom(ExecContext *oldContext)
{
// some things should already be set up
assert(mem == oldContext->mem);
#ifdef FULL_SYSTEM
assert(system == oldContext->system);
#else
assert(process == oldContext->process);
#endif
// copy over functional state
_status = oldContext->_status;
#ifdef FULL_SYSTEM
kernelStats = oldContext->kernelStats;
#endif
regs = oldContext->regs;
cpu_id = oldContext->cpu_id;
func_exe_insn = oldContext->func_exe_insn;
storeCondFailures = 0;
oldContext->_status = ExecContext::Unallocated;
}
void
ExecContext::serialize(ostream &os)
{
SERIALIZE_ARRAY(regs.intRegFile, NumIntRegs);
SERIALIZE_ARRAY(regs.floatRegFile.q, NumFloatRegs);
}
void
ExecContext::unserialize(const IniFile *db, const std::string &section)
{
UNSERIALIZE_ARRAY(regs.intRegFile, NumIntRegs);
UNSERIALIZE_ARRAY(regs.floatRegFile.q, NumFloatRegs);
}
void
ExecContext::setStatus(Status new_status)
{
#ifdef FULL_SYSTEM
if (status() == new_status)
return;
// Don't change the status from active if there are pending interrupts
if (new_status == Suspended && cpu->check_interrupts()) {
assert(status() == Active);
return;
}
#endif
_status = new_status;
cpu->execCtxStatusChg(thread_num);
}
void
ExecContext::regStats(const string &name)
{
#ifdef FULL_SYSTEM
kernelStats.regStats(name + ".kern");
#endif
}