gem5/cpu/exec_context.cc
Lisa Hsu 921b1ee87b Add the ability to track stats in user defined sets of function calls. code can be generated via the base/instrum_codegen.pl script to easily change the functions being tracked. the only thing the user needs to do is add code in tru64System to change how the callerMap is populated.
command line:

m5.* <config file> <args> --server.system:bin=true to track function calls in the server
m5.* <config file> <args> --client.system:bin=true to track function calls in the client

base/statistics.cc:
    make an adjustment to the way stats are printed for FS_MEASURE
base/statistics.hh:
    add a name() virtual function to GenBin.  add a debug printf for activate().
    add amake MainBin the default bin when FS_MEASURE.
cpu/exec_context.cc:
    initialize swCtx to null upon creation of an xc
cpu/exec_context.hh:
    add a SWContext pointer to every execution context.
cpu/simple_cpu/simple_cpu.cc:
    process calls and returns for FS_MEASURE
cpu/simple_cpu/simple_cpu.hh:
    add this so idleCycles will not be accessed before all stats are constructed
kern/tru64/tru64_events.cc:
    add a FnEvent that fires whenever a function we're tracking is called.  implement the process() virtual function for it.
kern/tru64/tru64_events.hh:
    add FnEvent
kern/tru64/tru64_system.cc:
    send bin parameter to System constructor.  add bin parameter to Tru64System object.  initialize all the FnEvent and MainBin members of Tru64system.  also, populate the calling map that indicates whether a function call is on the path we're tracking.
kern/tru64/tru64_system.hh:
    modify the Tru64System class to support FS_MEASURE
sim/system.cc:
    add a bin parameter to System class.  initialize a MainBin to hold the stats for nonPath.
sim/system.hh:
    add a map of to match bins to function names.  add a swCtx map to map pcb addresses to SWContext *s.  Add some supporting functions.

--HG--
extra : convert_revision : af3eadd798cb2d2aed9b54e1059dcedf244dd526
2003-11-04 15:15:12 -05:00

147 lines
4.4 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 "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),
#ifdef FS_MEASURE
swCtx(NULL),
#endif
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_ENUM(_status);
regs.serialize(os);
// thread_num and cpu_id are deterministic from the config
SERIALIZE_SCALAR(func_exe_insn);
}
void
ExecContext::unserialize(Checkpoint *cp, const std::string &section)
{
UNSERIALIZE_ENUM(_status);
regs.unserialize(cp, section);
// thread_num and cpu_id are deterministic from the config
UNSERIALIZE_SCALAR(func_exe_insn);
}
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
}