void IEC::updateIecLines()
{
bool signals_changed;
bool atn_edge;
// Update port lines
signals_changed = _updateIecLines(&atn_edge);
// Check if ATN edge occurred
if (atn_edge) {
drive->simulateAtnInterrupt();
}
if (signals_changed) {
if (busActivity == 0) {
// Bus activity detected
drive->c64->putMessage(MSG_VC1541_DATA, 1);
drive->c64->setWarp(drive->c64->getAlwaysWarp() || drive->c64->getWarpLoad());
}
busActivity = 30;
}
if (signals_changed && tracingEnabled()) {
dumpTrace();
}
}
void optimize(IRUnit& unit, IRBuilder& irBuilder, TransKind kind) {
auto finishPass = [&](const char* msg) {
dumpTrace(6, unit, folly::format("after {}", msg).str().c_str());
assert(checkCfg(unit));
assert(checkTmpsSpanningCalls(unit));
if (debug) {
forEachInst(rpoSortCfg(unit), assertOperandTypes);
}
};
auto doPass = [&](void (*fn)(IRUnit&), const char* msg) {
fn(unit);
finishPass(msg);
};
auto dce = [&](const char* which) {
if (!RuntimeOption::EvalHHIRDeadCodeElim) return;
eliminateDeadCode(unit);
finishPass(folly::format("{} DCE", which).str().c_str());
};
if (RuntimeOption::EvalHHIRRelaxGuards) {
auto const simpleRelax = kind == TransProfile;
auto changed = relaxGuards(unit, *irBuilder.guards(), simpleRelax);
if (changed) finishPass("guard relaxation");
}
if (RuntimeOption::EvalHHIRRefcountOpts) {
optimizeRefcounts(unit);
finishPass("refcount opts");
}
dce("initial");
if (RuntimeOption::EvalHHIRPredictionOpts) {
doPass(optimizePredictions, "prediction opts");
}
if (RuntimeOption::EvalHHIRExtraOptPass
&& (RuntimeOption::EvalHHIRCse
|| RuntimeOption::EvalHHIRSimplification)) {
irBuilder.reoptimize();
finishPass("reoptimize");
// Cleanup any dead code left around by CSE/Simplification
// Ideally, this would be controlled by a flag returned
// by optimzeTrace indicating whether DCE is necessary
dce("reoptimize");
}
if (RuntimeOption::EvalHHIRJumpOpts) {
doPass(optimizeJumps, "jumpopts");
dce("jump opts");
}
if (RuntimeOption::EvalHHIRGenerateAsserts) {
doPass(insertAsserts, "RefCnt asserts");
}
}
void optimizeTrace(IRTrace* trace, TraceBuilder& traceBuilder) {
auto& irFactory = traceBuilder.factory();
auto finishPass = [&](const char* msg) {
dumpTrace(6, trace, folly::format("after {}", msg).str().c_str());
assert(checkCfg(trace, irFactory));
assert(checkTmpsSpanningCalls(trace, irFactory));
if (debug) forEachTraceInst(trace, assertOperandTypes);
};
auto doPass = [&](void (*fn)(IRTrace*, IRFactory&),
const char* msg) {
fn(trace, irFactory);
finishPass(msg);
};
auto dce = [&](const char* which) {
if (!RuntimeOption::EvalHHIRDeadCodeElim) return;
eliminateDeadCode(trace, irFactory);
finishPass(folly::format("{} DCE", which).str().c_str());
};
if (RuntimeOption::EvalHHIRRelaxGuards) {
auto changed = relaxGuards(trace, irFactory, *traceBuilder.guards());
if (changed) finishPass("guard relaxation");
}
dce("initial");
if (RuntimeOption::EvalHHIRPredictionOpts) {
doPass(optimizePredictions, "prediction opts");
}
if (RuntimeOption::EvalHHIRExtraOptPass
&& (RuntimeOption::EvalHHIRCse
|| RuntimeOption::EvalHHIRSimplification)) {
traceBuilder.reoptimize();
finishPass("reoptimize");
// Cleanup any dead code left around by CSE/Simplification
// Ideally, this would be controlled by a flag returned
// by optimzeTrace indicating whether DCE is necessary
dce("reoptimize");
}
if (RuntimeOption::EvalHHIRJumpOpts) {
doPass(optimizeJumps, "jumpopts");
dce("jump opts");
}
if (RuntimeOption::EvalHHIRGenerateAsserts) {
doPass(insertAsserts, "RefCnt asserts");
}
}
void
IEC::dumpState()
{
msg("IEC bus\n");
msg("-------\n");
msg("\n");
dumpTrace();
msg("\n");
msg("Drive connected : %s\n", driveConnected ? "yes" : "no");
msg(" old ATN : %d\n", oldAtnLine);
msg(" old CLK : %d\n", oldClockLine);
msg(" old DATA : %d\n", oldDataLine);
msg("\n");
}
void genCode(CodeBlock& main, CodeBlock& stubs, IRUnit& unit,
std::vector<TransBCMapping>* bcMap,
JIT::MCGenerator* mcg,
const RegAllocInfo& regs) {
Timer _t(Timer::codeGen);
if (dumpIREnabled()) {
AsmInfo ai(unit);
genCodeImpl(main, stubs, unit, bcMap, mcg, regs, &ai);
dumpTrace(kCodeGenLevel, unit, " after code gen ", ®s, &ai);
} else {
genCodeImpl(main, stubs, unit, bcMap, mcg, regs, nullptr);
}
}
int main(int argc, char **argv)
{
bool isRoot = (getuid() == 0);
if (argc == 2 && 0 == strcmp(argv[1], "--help")) {
showHelp(argv[0]);
exit(0);
}
for (;;) {
int ret;
ret = getopt(argc, argv, "b:gcidflst:wz");
if (ret < 0) {
break;
}
switch(ret) {
case 'g':
if (!isRoot) {
fprintf(stderr, "error: tracing GPU power state requires root privileges\n");
exit(1);
}
g_traceGpuPower = true;
break;
case 'b':
g_traceBufferSizeKB = atoi(optarg);
break;
case 'c':
g_traceOverwrite = true;
break;
case 'i':
g_traceCpuIdle = true;
break;
case 'l':
g_traceGovernorLoad = true;
break;
case 'd':
if (!isRoot) {
fprintf(stderr, "error: tracing disk activity requires root privileges\n");
exit(1);
}
g_traceDisk = true;
break;
case 'f':
g_traceCpuFrequency = true;
break;
case 's':
g_traceSchedSwitch = true;
break;
case 't':
g_traceDurationSeconds = atoi(optarg);
break;
case 'w':
if (!isRoot) {
fprintf(stderr, "error: tracing kernel work queues requires root privileges\n");
exit(1);
}
g_traceWorkqueue = true;
break;
case 'z':
g_compress = true;
break;
default:
fprintf(stderr, "\n");
showHelp(argv[0]);
exit(-1);
break;
}
}
registerSigHandler();
bool ok = startTrace(isRoot);
if (ok) {
printf("capturing trace...");
fflush(stdout);
// We clear the trace after starting it because tracing gets enabled for
// each CPU individually in the kernel. Having the beginning of the trace
// contain entries from only one CPU can cause "begin" entries without a
// matching "end" entry to show up if a task gets migrated from one CPU to
// another.
ok = clearTrace();
if (ok) {
// Sleep to allow the trace to be captured.
struct timespec timeLeft;
timeLeft.tv_sec = g_traceDurationSeconds;
timeLeft.tv_nsec = 0;
do {
if (g_traceAborted) {
break;
}
} while (nanosleep(&timeLeft, &timeLeft) == -1 && errno == EINTR);
}
}
// Stop the trace and restore the default settings.
stopTrace(isRoot);
if (ok) {
if (!g_traceAborted) {
printf(" done\nTRACE:\n");
fflush(stdout);
dumpTrace();
} else {
printf("\ntrace aborted.\n");
fflush(stdout);
}
clearTrace();
} else {
fprintf(stderr, "unable to start tracing\n");
}
// Reset the trace buffer size to 1.
setTraceBufferSizeKB(1);
return g_traceAborted ? 1 : 0;
}
/*
* ======== smain ========
*/
Int smain(Int argc, String argv[])
{
Char newTraceMask[MAXTRACESTRING];
Server_Handle server = NULL;
Bool finished = FALSE;
Uns mode = PULLTRACE;
Server_Status status;
Int traceToken;
String mask;
Uns rate;
/* interpret PULLTRACE mode args */
if (argc == 3) {
rate = atoi(argv[1]);
mask = argv[2];
}
/* else, if no args, set mode to TRACEUTIL */
else if (argc == 1) {
mode = TRACEUTIL;
}
/* else, show usage */
else {
fprintf(stderr, usage, argv[0]);
goto done;
}
/* reset, load, and start DSP Engine */
if ((engine = Engine_open(engineName, NULL, NULL)) == NULL) {
fprintf(stderr, "Error: can't open engine %s!\n", engineName);
goto done;
}
/* setup file descriptor mask for checking for user key input */
FD_ZERO(&fdMask);
FD_SET(STDIN_FILENO, &fdMask);
/* if standard output mode... */
if (mode == PULLTRACE) {
printf("Trace polling rate: %d msec\n", rate);
rate *= 1000;
printf("DSP trace mask: %s\n", mask);
/* get server handle */
server = Engine_getServer(engine);
if (server == NULL) {
fprintf(stderr, "Error: can't get server handle!\n");
goto closeEngine;
}
/* connect for server trace data */
status = Server_connectTrace(server, &traceToken);
if (status == Server_EINUSE) {
fprintf(stderr,
"Error: server trace already in use by another process!\n");
goto closeEngine;
}
else if (status != Server_EOK) {
fprintf(stderr, "Error: server connect failed, status = 0x%x!\n",
status);
goto closeEngine;
}
/* server trace mask */
status = Server_setTrace(server, mask);
if (status != (Int) Engine_EOK) {
fprintf(stderr, "Error: unable to set trace mask, status = 0x%x!\n",
status);
goto closeEngine;
}
printf("Hit <Enter> to exit, or, new trace mask and then <Enter>...\n");
while (finished == FALSE) {
dumpTrace(server);
usleep(rate);
if (checkInput(newTraceMask) == TRUE) {
if (strlen(newTraceMask) == 0) {
finished = TRUE;
}
else {
printf("setting new trace mask: %s\n", newTraceMask);
status = Server_setTrace(server, newTraceMask);
if (status != (Int) Engine_EOK) {
fprintf(stderr,
"Error updating trace mask, status = 0x%x!\n",
status);
}
}
}
};
/* discconnect from server trace data */
status = Server_disconnectTrace(server, traceToken);
if (status != Server_EOK) {
fprintf(stderr,
"Error: unable to disconnect from server trace, status = 0x%x!\n",
status);
}
}
/* else, startup TraceUtil to retrieve trace/LOG data and write to files */
else {
TraceUtil_start(engineName);
printf("Started TraceUtil thread\nHit <Enter> to exit...\n");
getchar();
TraceUtil_stop();
}
printf("Done.\n");
closeEngine:
/* close the engine */
if (engine) {
Engine_close(engine);
}
done:
return (0);
}
void optimize(IRUnit& unit, IRBuilder& irBuilder, TransKind kind) {
Timer _t(Timer::optimize);
auto finishPass = [&](const char* msg) {
dumpTrace(6, unit, folly::format("after {}", msg).str().c_str());
assert(checkCfg(unit));
assert(checkTmpsSpanningCalls(unit));
if (debug) {
forEachInst(rpoSortCfg(unit), assertOperandTypes);
}
};
auto doPass = [&](void (*fn)(IRUnit&), const char* msg) {
fn(unit);
finishPass(msg);
};
auto dce = [&](const char* which) {
if (!RuntimeOption::EvalHHIRDeadCodeElim) return;
eliminateDeadCode(unit);
finishPass(folly::format("{} DCE", which).str().c_str());
};
if (RuntimeOption::EvalHHIRRelaxGuards) {
/*
* In TransProfile mode, we can only relax the guards in tracelet
* region mode. If the region came from analyze() and we relax the
* guards here, then the RegionDesc's TypePreds in ProfData won't
* accurately reflect the generated guards. This can result in a
* TransOptimze region to be formed with types that are incompatible,
* e.g.:
* B1: TypePred: Loc0: Bool // but this gets relaxed to Uncounted
* PostCond: Loc0: Uncounted // post-conds are accurate
* B2: TypePred: Loc0: Int // this will always fail
*/
const bool relax = kind != TransProfile ||
RuntimeOption::EvalJitRegionSelector == "tracelet";
if (relax) {
Timer _t(Timer::optimize_relaxGuards);
const bool simple = kind == TransProfile &&
RuntimeOption::EvalJitRegionSelector == "tracelet";
auto changed = relaxGuards(unit, *irBuilder.guards(), simple);
if (changed) finishPass("guard relaxation");
}
}
if (RuntimeOption::EvalHHIRRefcountOpts) {
optimizeRefcounts(unit, FrameState{unit, unit.entry()->front().marker()});
finishPass("refcount opts");
}
dce("initial");
if (RuntimeOption::EvalHHIRPredictionOpts) {
doPass(optimizePredictions, "prediction opts");
}
if (RuntimeOption::EvalHHIRExtraOptPass
&& (RuntimeOption::EvalHHIRCse
|| RuntimeOption::EvalHHIRSimplification)) {
irBuilder.reoptimize();
finishPass("reoptimize");
// Cleanup any dead code left around by CSE/Simplification
// Ideally, this would be controlled by a flag returned
// by optimizeTrace indicating whether DCE is necessary
dce("reoptimize");
}
if (RuntimeOption::EvalHHIRJumpOpts) {
doPass(optimizeJumps, "jumpopts");
dce("jump opts");
}
if (RuntimeOption::EvalHHIRGenerateAsserts) {
doPass(insertAsserts, "RefCnt asserts");
}
}