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ecos_kernel_test: STEP 2: record memory access range

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git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1475 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
This commit is contained in:
chb
2012-08-08 14:20:47 +00:00
parent ad42c5b04a
commit ff8cb88ab9
1 changed files with 33 additions and 19 deletions
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52
src/experiments/ecos_kernel_test/experiment.cc
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@ -159,34 +159,48 @@ bool EcosKernelTestExperiment::performTrace() {
// this must be done *after* configuring the plugin:
simulator.addFlow(&tp);
// again, run until 'ECOS_FUNC_FINISH' is reached
BPSingleListener bp;
#if 1
// trace WEATHER_NUMITER_TRACING measurement loop iterations
// -> calibration
bp.setWatchInstructionPointer(ECOS_FUNC_FINISH);
//bp.setCounter(WEATHER_NUMITER_TRACING); // single event, only
#else
// FIXME this doesn't work properly: trace is one instruction too short as
// tp is removed before all events were delivered
// trace WEATHER_NUMINSTR_TRACING instructions
// -> campaign-ready traces with identical lengths
bp.setWatchInstructionPointer(ANY_ADDR);
bp.setCounter(OOSTUBS_NUMINSTR);
#endif
simulator.addListener(&bp);
// on the way, count instructions // FIXME add SAL functionality for this?
BPSingleListener ev_count(ANY_ADDR);
simulator.addListener(&ev_count);
unsigned instr_counter = 0;
// count instructions
// FIXME add SAL functionality for this?
int instr_counter = 0;
while (simulator.resume() == &ev_count) {
++instr_counter;
simulator.addListener(&ev_count);
// on the way, record lowest and highest memory address accessed
MemAccessListener ev_mem(ANY_ADDR, MemAccessEvent::MEM_READWRITE);
simulator.addListener(&ev_mem);
unsigned lowest_addr = 0;
unsigned highest_addr = 0;
// do the job, 'till the end
BaseListener* ev = simulator.resume();
while(ev != &bp) {
if(ev == &ev_count) {
++instr_counter;
simulator.addListener(&ev_count);
}
else if(ev == &ev_mem) {
unsigned trigger_addr = ev_mem.getTriggerAddress();
if( (lowest_addr == 0) && (highest_addr == 0) ) {
lowest_addr = highest_addr = trigger_addr;
}
else if(trigger_addr > highest_addr){
highest_addr = trigger_addr;
}
else if(trigger_addr < lowest_addr){
lowest_addr = trigger_addr;
}
simulator.addListener(&ev_mem);
}
ev = simulator.resume();
}
log << dec << "tracing finished after " << instr_counter << " instructions" << endl;
//TODO: safe this value for experiment STEP 3
log << hex << "all memory accesses within [ 0x" << lowest_addr << " , 0x" << highest_addr << " ]" << endl;
//TODO: safe these values for experiment STEP 3
simulator.removeFlow(&tp);