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+/*
+ * 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 <map>
+#include <stack>
+#include <string>
+
+#include "base/statistics.hh"
+#include "base/trace.hh"
+#include "cpu/exec_context.hh"
+#include "kern/kernel_stats.hh"
+#include "sim/stats.hh"
+#include "sim/sw_context.hh"
+#include "targetarch/isa_traits.hh"
+#include "targetarch/osfpal.hh"
+#include "targetarch/syscalls.hh"
+
+using namespace std;
+using namespace Stats;
+
+class KSData
+{
+ private:
+ string _name;
+ ExecContext *xc;
+ BaseCPU *cpu;
+
+ public:
+ KSData(ExecContext *_xc, BaseCPU *_cpu)
+ : xc(_xc), cpu(_cpu), iplLast(0), iplLastTick(0), lastUser(false),
+ lastModeTick(0)
+ {}
+
+ const string &name() { return _name; }
+ void regStats(const string &name);
+
+ public:
+ Scalar<> _arm;
+ Scalar<> _quiesce;
+ Scalar<> _ivlb;
+ Scalar<> _ivle;
+ Scalar<> _hwrei;
+
+ Vector<> _iplCount;
+ Vector<> _iplGood;
+ Vector<> _iplTicks;
+ Formula _iplUsed;
+
+ Vector<> _callpal;
+ Vector<> _syscall;
+ Vector<> _faults;
+
+ Vector<> _mode;
+ Vector<> _modeGood;
+ Formula _modeFraction;
+ Vector<> _modeTicks;
+
+ Scalar<> _swap_context;
+
+ private:
+ int iplLast;
+ Tick iplLastTick;
+
+ bool lastUser;
+ Tick lastModeTick;
+
+ public:
+ void swpipl(int ipl);
+ void mode(bool user);
+ void callpal(int code);
+};
+
+KernelStats::KernelStats(ExecContext *xc, BaseCPU *cpu)
+{ data = new KSData(xc, cpu); }
+
+KernelStats::~KernelStats()
+{ delete data; }
+
+void
+KernelStats::regStats(const string &name)
+{ data->regStats(name); }
+
+void
+KSData::regStats(const string &name)
+{
+ _name = name;
+
+ _arm
+ .name(name + ".inst.arm")
+ .desc("number of arm instructions executed")
+ ;
+
+ _quiesce
+ .name(name + ".inst.quiesce")
+ .desc("number of quiesce instructions executed")
+ ;
+
+ _ivlb
+ .name(name + ".inst.ivlb")
+ .desc("number of ivlb instructions executed")
+ ;
+
+ _ivle
+ .name(name + ".inst.ivle")
+ .desc("number of ivle instructions executed")
+ ;
+
+ _hwrei
+ .name(name + ".inst.hwrei")
+ .desc("number of hwrei instructions executed")
+ ;
+
+ _iplCount
+ .init(32)
+ .name(name + ".ipl_count")
+ .desc("number of times we switched to this ipl")
+ .flags(total | pdf | nozero | nonan)
+ ;
+
+ _iplGood
+ .init(32)
+ .name(name + ".ipl_good")
+ .desc("number of times we switched to this ipl from a different ipl")
+ .flags(total | pdf | nozero | nonan)
+ ;
+
+ _iplTicks
+ .init(32)
+ .name(name + ".ipl_ticks")
+ .desc("number of cycles we spent at this ipl")
+ .flags(total | pdf | nozero | nonan)
+ ;
+
+ _iplUsed
+ .name(name + ".ipl_used")
+ .desc("fraction of swpipl calls that actually changed the ipl")
+ .flags(total | nozero | nonan)
+ ;
+
+ _iplUsed = _iplGood / _iplCount;
+
+ _callpal
+ .init(256)
+ .name(name + ".callpal")
+ .desc("number of callpals executed")
+ .flags(total | pdf | nozero | nonan)
+ ;
+
+ for (int i = 0; i < PAL::NumCodes; ++i) {
+ const char *str = PAL::name(i);
+ if (str)
+ _callpal.subname(i, str);
+ }
+
+ _syscall
+ .init(SystemCalls<Tru64>::Number)
+ .name(name + ".syscall")
+ .desc("number of syscalls executed")
+ .flags(total | pdf | nozero | nonan)
+ ;
+
+ for (int i = 0; i < SystemCalls<Tru64>::Number; ++i) {
+ const char *str = SystemCalls<Tru64>::name(i);
+ if (str) {
+ _syscall.subname(i, str);
+ }
+ }
+
+ _faults
+ .init(Num_Faults)
+ .name(name + ".faults")
+ .desc("number of faults")
+ .flags(total | pdf | nozero | nonan)
+ ;
+
+ for (int i = 1; i < Num_Faults; ++i) {
+ const char *str = FaultName(i);
+ if (str)
+ _faults.subname(i, str);
+ }
+
+ _mode
+ .init(2)
+ .name(name + ".mode_switch")
+ .subname(0, "kernel")
+ .subname(1, "user")
+ .desc("number of protection mode switches")
+ ;
+
+ _modeGood
+ .init(2)
+ ;
+
+ _modeFraction
+ .name(name + ".mode_switch_good")
+ .subname(0, "kernel")
+ .subname(1, "user")
+ .desc("fraction of useful protection mode switches")
+ .flags(total)
+ ;
+ _modeFraction = _modeGood / _mode;
+
+ _modeTicks
+ .init(2)
+ .name(name + ".mode_ticks")
+ .subname(0, "kernel")
+ .subname(1, "user")
+ .desc("number of ticks spent at the given mode")
+ .flags(pdf)
+ ;
+
+ _swap_context
+ .name(name + ".swap_context")
+ .desc("number of times the context was actually changed")
+ ;
+}
+
+void
+KernelStats::arm()
+{ data->_arm++; }
+
+void
+KernelStats::quiesce()
+{ data->_quiesce++; }
+
+void
+KernelStats::ivlb()
+{ data->_ivlb++; }
+
+void
+KernelStats::ivle()
+{ data->_ivle++; }
+
+void
+KernelStats::hwrei()
+{ data->_hwrei++; }
+
+void
+KernelStats::fault(Fault fault)
+{ data->_faults[fault]++; }
+
+void
+KernelStats::swpipl(int ipl)
+{ data->swpipl(ipl); }
+
+void
+KernelStats::mode(bool user)
+{ data->mode(user); }
+
+void
+KernelStats::context(Addr old_pcbb, Addr new_pcbb)
+{ data->_swap_context++; }
+
+void
+KernelStats::callpal(int code)
+{ data->callpal(code); }
+
+
+void
+KSData::swpipl(int ipl)
+{
+ assert(ipl >= 0 && ipl <= 0x1f && "invalid IPL\n");
+
+ _iplCount[ipl]++;
+
+ if (ipl == iplLast)
+ return;
+
+ _iplGood[ipl]++;
+ _iplTicks[iplLast] += curTick - iplLastTick;
+ iplLastTick = curTick;
+ iplLast = ipl;
+}
+
+void
+KSData::mode(bool user)
+{
+ _mode[user]++;
+ if (user == lastUser)
+ return;
+
+ _modeGood[user]++;
+ _modeTicks[lastUser] += curTick - lastModeTick;
+
+ lastModeTick = curTick;
+ lastUser = user;
+
+ if (xc->system->bin) {
+ if (!xc->swCtx || xc->swCtx->callStack.empty()) {
+ if (user)
+ xc->system->User->activate();
+ else
+ xc->system->Kernel->activate();
+ }
+ }
+}
+
+void
+KSData::callpal(int code)
+{
+ if (!PAL::name(code))
+ return;
+
+ _callpal[code]++;
+
+ switch (code) {
+ case PAL::callsys:
+ {
+ int number = xc->regs.intRegFile[0];
+ if (SystemCalls<Tru64>::validSyscallNumber(number)) {
+ int cvtnum = SystemCalls<Tru64>::convert(number);
+ _syscall[cvtnum]++;
+ }
+ }
+ break;
+ }
+
+ if (code == PAL::swpctx) {
+ SWContext *out = xc->swCtx;
+ System *sys = xc->system;
+ if (!sys->bin)
+ return;
+ DPRINTF(TCPIP, "swpctx event\n");
+ if (out) {
+ DPRINTF(TCPIP, "swapping context out with this stack!\n");
+ xc->system->dumpState(xc);
+ Addr oldPCB = xc->regs.ipr[TheISA::IPR_PALtemp23];
+
+ if (out->callStack.empty()) {
+ DPRINTF(TCPIP, "but removing it, cuz empty!\n");
+ SWContext *find = sys->findContext(oldPCB);
+ if (find) {
+ assert(sys->findContext(oldPCB) == out);
+ sys->remContext(oldPCB);
+ }
+ delete out;
+ } else {
+ DPRINTF(TCPIP, "switching out context with pcb %#x, top fn %s\n",
+ oldPCB, out->callStack.top()->name);
+ if (!sys->findContext(oldPCB)) {
+ if (!sys->addContext(oldPCB, out))
+ panic("could not add context");
+ }
+ }
+ }
+
+ Addr newPCB = xc->regs.intRegFile[16];
+ SWContext *in = sys->findContext(newPCB);
+ xc->swCtx = in;
+
+ if (in) {
+ assert(!in->callStack.empty() &&
+ "should not be switching in empty context");
+ DPRINTF(TCPIP, "swapping context in with this callstack!\n");
+ xc->system->dumpState(xc);
+ sys->remContext(newPCB);
+ fnCall *top = in->callStack.top();
+ DPRINTF(TCPIP, "switching in to pcb %#x, %s\n", newPCB, top->name);
+ assert(top->myBin && "should not switch to context with no Bin");
+ top->myBin->activate();
+ } else {
+ sys->Kernel->activate();
+ }
+ DPRINTF(TCPIP, "end swpctx\n");
+ }
+}
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