4 files changed, 155 insertions, 3 deletions

diff --git a/src/cpu/simple/atomic.cc b/src/cpu/simple/atomic.cc
index 35ad46158..da4258fb9 100644
--- a/src/cpu/simple/atomic.cc
+++ b/src/cpu/simple/atomic.cc
@@ -212,6 +212,7 @@ AtomicSimpleCPU::resume()
         if (!tickEvent.scheduled())
             schedule(tickEvent, nextCycle());
     }
+    system->totalNumInsts = 0;
 }
 
 void
diff --git a/src/cpu/simple/base.cc b/src/cpu/simple/base.cc
index 13ef0648c..8d7a1b119 100644
--- a/src/cpu/simple/base.cc
+++ b/src/cpu/simple/base.cc
@@ -142,9 +142,69 @@ BaseSimpleCPU::regStats()
         .desc("Number of instructions executed")
         ;
 
+    numIntAluAccesses
+        .name(name() + ".num_int_alu_accesses")
+        .desc("Number of integer alu accesses")
+        ;
+
+    numFpAluAccesses
+        .name(name() + ".num_fp_alu_accesses")
+        .desc("Number of float alu accesses")
+        ;
+
+    numCallsReturns
+        .name(name() + ".num_func_calls")
+        .desc("number of times a function call or return occured")
+        ;
+
+    numCondCtrlInsts
+        .name(name() + ".num_conditional_control_insts")
+        .desc("number of instructions that are conditional controls")
+        ;
+
+    numIntInsts
+        .name(name() + ".num_int_insts")
+        .desc("number of integer instructions")
+        ;
+
+    numFpInsts
+        .name(name() + ".num_fp_insts")
+        .desc("number of float instructions")
+        ;
+
+    numIntRegReads
+        .name(name() + ".num_int_register_reads")
+        .desc("number of times the integer registers were read")
+        ;
+
+    numIntRegWrites
+        .name(name() + ".num_int_register_writes")
+        .desc("number of times the integer registers were written")
+        ;
+
+    numFpRegReads
+        .name(name() + ".num_fp_register_reads")
+        .desc("number of times the floating registers were read")
+        ;
+
+    numFpRegWrites
+        .name(name() + ".num_fp_register_writes")
+        .desc("number of times the floating registers were written")
+        ;
+
     numMemRefs
-        .name(name() + ".num_refs")
-        .desc("Number of memory references")
+        .name(name()+".num_mem_refs")
+        .desc("number of memory refs")
+        ;
+
+    numStoreInsts
+        .name(name() + ".num_store_insts")
+        .desc("Number of store instructions")
+        ;
+
+    numLoadInsts
+        .name(name() + ".num_load_insts")
+        .desc("Number of load instructions")
         ;
 
     notIdleFraction
@@ -157,6 +217,16 @@ BaseSimpleCPU::regStats()
         .desc("Percentage of idle cycles")
         ;
 
+    numBusyCycles
+        .name(name() + ".num_busy_cycles")
+        .desc("Number of busy cycles")
+        ;
+
+    numIdleCycles
+        .name(name()+".num_idle_cycles")
+        .desc("Number of idle cycles")
+        ;
+
     icacheStallCycles
         .name(name() + ".icache_stall_cycles")
         .desc("ICache total stall cycles")
@@ -182,6 +252,8 @@ BaseSimpleCPU::regStats()
         ;
 
     idleFraction = constant(1.0) - notIdleFraction;
+    numIdleCycles = idleFraction * numCycles;
+    numBusyCycles = (notIdleFraction)*numCycles;
 }
 
 void
@@ -277,6 +349,7 @@ BaseSimpleCPU::preExecute()
 
     // check for instruction-count-based events
     comInstEventQueue[0]->serviceEvents(numInst);
+    system->instEventQueue.serviceEvents(system->totalNumInsts);
 
     // decode the instruction
     inst = gtoh(inst);
@@ -369,6 +442,39 @@ BaseSimpleCPU::postExecute()
         CPA::cpa()->swAutoBegin(tc, pc.nextInstAddr());
     }
 
+    /* Power model statistics */
+    //integer alu accesses
+    if (curStaticInst->isInteger()){
+        numIntAluAccesses++;
+        numIntInsts++;
+    }
+
+    //float alu accesses
+    if (curStaticInst->isFloating()){
+        numFpAluAccesses++;
+        numFpInsts++;
+    }
+    
+    //number of function calls/returns to get window accesses
+    if (curStaticInst->isCall() || curStaticInst->isReturn()){
+        numCallsReturns++;
+    }
+    
+    //the number of branch predictions that will be made
+    if (curStaticInst->isCondCtrl()){
+        numCondCtrlInsts++;
+    }
+    
+    //result bus acceses
+    if (curStaticInst->isLoad()){
+        numLoadInsts++;
+    }
+    
+    if (curStaticInst->isStore()){
+        numStoreInsts++;
+    }
+    /* End power model statistics */
+
     traceFunctions(instAddr);
 
     if (traceData) {
diff --git a/src/cpu/simple/base.hh b/src/cpu/simple/base.hh
index bd967b185..628432d76 100644
--- a/src/cpu/simple/base.hh
+++ b/src/cpu/simple/base.hh
@@ -182,7 +182,7 @@ class BaseSimpleCPU : public BaseCPU
     {
         numInst++;
         numInsts++;
-
+        system->totalNumInsts++;
         thread->funcExeInst++;
     }
 
@@ -191,8 +191,42 @@ class BaseSimpleCPU : public BaseCPU
         return numInst - startNumInst;
     }
 
+    //number of integer alu accesses
+    Stats::Scalar numIntAluAccesses;
+
+    //number of float alu accesses
+    Stats::Scalar numFpAluAccesses;
+
+    //number of function calls/returns
+    Stats::Scalar numCallsReturns;
+
+    //conditional control instructions;
+    Stats::Scalar numCondCtrlInsts;
+
+    //number of int instructions
+    Stats::Scalar numIntInsts;
+
+    //number of float instructions
+    Stats::Scalar numFpInsts;
+
+    //number of integer register file accesses
+    Stats::Scalar numIntRegReads;
+    Stats::Scalar numIntRegWrites;
+
+    //number of float register file accesses
+    Stats::Scalar numFpRegReads;
+    Stats::Scalar numFpRegWrites;
+
     // number of simulated memory references
     Stats::Scalar numMemRefs;
+    Stats::Scalar numLoadInsts;
+    Stats::Scalar numStoreInsts;
+
+    // number of idle cycles
+    Stats::Formula numIdleCycles;
+
+    // number of busy cycles
+    Stats::Formula numBusyCycles;
 
     // number of simulated loads
     Counter numLoad;
@@ -240,28 +274,33 @@ class BaseSimpleCPU : public BaseCPU
 
     uint64_t readIntRegOperand(const StaticInst *si, int idx)
     {
+        numIntRegReads++;
         return thread->readIntReg(si->srcRegIdx(idx));
     }
 
     FloatReg readFloatRegOperand(const StaticInst *si, int idx)
     {
+        numFpRegReads++;
         int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
         return thread->readFloatReg(reg_idx);
     }
 
     FloatRegBits readFloatRegOperandBits(const StaticInst *si, int idx)
     {
+        numFpRegReads++;
         int reg_idx = si->srcRegIdx(idx) - TheISA::FP_Base_DepTag;
         return thread->readFloatRegBits(reg_idx);
     }
 
     void setIntRegOperand(const StaticInst *si, int idx, uint64_t val)
     {
+        numIntRegWrites++;
         thread->setIntReg(si->destRegIdx(idx), val);
     }
 
     void setFloatRegOperand(const StaticInst *si, int idx, FloatReg val)
     {
+        numFpRegWrites++;
         int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
         thread->setFloatReg(reg_idx, val);
     }
@@ -269,6 +308,7 @@ class BaseSimpleCPU : public BaseCPU
     void setFloatRegOperandBits(const StaticInst *si, int idx,
                                 FloatRegBits val)
     {
+        numFpRegWrites++;
         int reg_idx = si->destRegIdx(idx) - TheISA::FP_Base_DepTag;
         thread->setFloatRegBits(reg_idx, val);
     }
@@ -294,16 +334,19 @@ class BaseSimpleCPU : public BaseCPU
 
     MiscReg readMiscReg(int misc_reg)
     {
+        numIntRegReads++;
         return thread->readMiscReg(misc_reg);
     }
 
     void setMiscReg(int misc_reg, const MiscReg &val)
     {
+        numIntRegWrites++;
         return thread->setMiscReg(misc_reg, val);
     }
 
     MiscReg readMiscRegOperand(const StaticInst *si, int idx)
     {
+        numIntRegReads++;
         int reg_idx = si->srcRegIdx(idx) - TheISA::Ctrl_Base_DepTag;
         return thread->readMiscReg(reg_idx);
     }
@@ -311,6 +354,7 @@ class BaseSimpleCPU : public BaseCPU
     void setMiscRegOperand(
             const StaticInst *si, int idx, const MiscReg &val)
     {
+        numIntRegWrites++;
         int reg_idx = si->destRegIdx(idx) - TheISA::Ctrl_Base_DepTag;
         return thread->setMiscReg(reg_idx, val);
     }
diff --git a/src/cpu/simple/timing.cc b/src/cpu/simple/timing.cc
index 9192c0808..47f99cd6d 100644
--- a/src/cpu/simple/timing.cc
+++ b/src/cpu/simple/timing.cc
@@ -130,6 +130,7 @@ TimingSimpleCPU::TimingSimpleCPU(TimingSimpleCPUParams *p)
     drainEvent = NULL;
     previousTick = 0;
     changeState(SimObject::Running);
+    system->totalNumInsts = 0;
 }