107 lines
3.4 KiB
C++
107 lines
3.4 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 "base_cpu.hh"
|
||
|
#include "exec_context.hh"
|
||
|
|
||
|
#ifdef FULL_SYSTEM
|
||
|
#include "system.hh"
|
||
|
#else
|
||
|
#include "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, int _cpu_id)
|
||
|
: kernelStats(this, _cpu), cpu(_cpu), thread_num(_thread_num), mem(_mem),
|
||
|
itb(_itb), dtb(_dtb), cpu_id(_cpu_id), system(_sys),
|
||
|
memCtrl(_sys->memCtrl), physmem(_sys->physmem)
|
||
|
{
|
||
|
memset(®s, 0, sizeof(RegFile));
|
||
|
_status = Active;
|
||
|
func_exe_insn = 0;
|
||
|
storeCondFailures = 0;
|
||
|
system->registerExecContext(this);
|
||
|
}
|
||
|
#else
|
||
|
ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
|
||
|
Process *_process, int _asid)
|
||
|
: cpu(_cpu), thread_num(_thread_num), process(_process), asid (_asid)
|
||
|
{
|
||
|
|
||
|
// Register with process object. Our 'active' will be set by the
|
||
|
// process iff we're the initial context. Others are reserved for
|
||
|
// dynamically created threads.
|
||
|
process->registerExecContext(this);
|
||
|
|
||
|
mem = process->getMemory();
|
||
|
|
||
|
func_exe_insn = 0;
|
||
|
storeCondFailures = 0;
|
||
|
}
|
||
|
|
||
|
ExecContext::ExecContext(BaseCPU *_cpu, int _thread_num,
|
||
|
FunctionalMemory *_mem, int _asid)
|
||
|
: cpu(_cpu), thread_num(_thread_num), process(NULL), mem(_mem),
|
||
|
asid(_asid)
|
||
|
{
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
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();
|
||
|
}
|
||
|
|
||
|
void
|
||
|
ExecContext::regStats(const string &name)
|
||
|
{
|
||
|
#ifdef FULL_SYSTEM
|
||
|
kernelStats.regStats(name + ".kern");
|
||
|
#endif
|
||
|
}
|