}

	// Disable signals during clone, so that the new thread starts
	// with signals disabled. It will enable them in minit.
	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {
		r := clone(cloneFlags, stk, unsafe.Pointer(mp), unsafe.Pointer(mp.g0), unsafe.Pointer(abi.FuncPCABI0(mstart)))
		// clone returns positive TID, negative errno.
		// We don't care about the TID.

			checkUint64(t, name, samples[i].Value.Uint64(), mstats.HeapIdle-mstats.HeapReleased)
		case "/memory/classes/heap/released:bytes":
			checkUint64(t, name, samples[i].Value.Uint64(), mstats.HeapReleased)
		case "/memory/classes/heap/objects:bytes":
			checkUint64(t, name, samples[i].Value.Uint64(), mstats.HeapAlloc)
		case "/memory/classes/heap/unused:bytes":
			checkUint64(t, name, samples[i].Value.Uint64(), mstats.HeapInuse-mstats.HeapAlloc)

{
	struct GoStart_return r;

	// Use Go to start 4 goroutines each of which handles 1/4 of the
	// board.
	r = GoStart(0, x, y, 0, x / 2, 0, y / 2, a, n);
	assert(r.r0 == 0 && r.r1 == 100);	// test multiple returns
	r = GoStart(1, x, y, x / 2, x, 0, y / 2, a, n);
	assert(r.r0 == 1 && r.r1 == 101);	// test multiple returns
	GoStart(2, x, y, 0, x / 2, y / 2, y, a, n);
	GoStart(3, x, y, x / 2, x, y / 2, y, a, n);
	GoWait(0);
	GoWait(1);

// first running goroutine in the traceback.
//
// If either of these flags is set, Start re-executes the current
// executable as a child process, in a special mode in which it
// acts as a telemetry sidecar for the parent process (the application).
// In that mode, the call to Start will never return, so Start must
// be called immediately within main, even before such things as

	slices.SortStableFunc(opts.tasks, func(a, b *trace.UserTaskSummary) int {
		aStart, bStart := parsed.startTime(), parsed.startTime()
		if a.Start != nil {
			aStart = a.Start.Time()
		}
		if b.Start != nil {
			bStart = b.Start.Time()
		}
		if a.Start != b.Start {
			return cmp.Compare(aStart, bStart)
		}
		// Break ties with the end time.
		aEnd, bEnd := parsed.endTime(), parsed.endTime()

			print("?")
		}
	}

	start := true
	printcomma := func() {
		if !start {
			print(", ")
		}
	}
	pi := 0
	slotIdx := uint8(0) // register arg spill slot index
printloop:
	for {
		o := p[pi]
		pi++
		switch o {
		case abi.TraceArgsEndSeq:
			break printloop
		case abi.TraceArgsStartAgg:
			printcomma()
			print("{")
			start = true
			continue

ECHO_ARGS=${ECHO_ARGS:-}
# Split ECHO_ARGS by spaces.
IFS=' ' read -r -a ECHO_ARGS_ARRAY <<< "$ECHO_ARGS"

ISTIO_LOG_DIR=${ISTIO_LOG_DIR:-/var/log/istio}

# Run the pilot agent and Envoy
/usr/local/bin/istio-start.sh&

# Start the echo server.

if [ "${EXEC_USER}" == "${USER:-}" ] ; then
  # if started as istio-proxy (or current user), do a normal start, without
  # redirecting stderr.
  INSTANCE_IP=${ISTIO_SVC_IP} POD_NAME=${POD_NAME} POD_NAMESPACE=${NS} "${ISTIO_BIN_BASE}/pilot-agent" proxy "${ISTIO_AGENT_FLAGS_ARRAY[@]}"
else

	CALL	runtime·args(SB)
	CALL	runtime·osinit(SB)
	CALL	runtime·schedinit(SB)

	// create a new goroutine to start program
	MOVQ	$runtime·mainPC(SB), AX		// entry
	PUSHQ	AX
	CALL	runtime·newproc(SB)
	POPQ	AX

	// start this M
	CALL	runtime·mstart(SB)

	CALL	runtime·abort(SB)	// mstart should never return
	RET

bad_cpu: // show that the program requires a certain microarchitecture level.

	// Trace a few times.
	for i := 0; i < 10; i++ {
		var buf bytes.Buffer
		if err := trace.Start(&buf); err != nil {
			log.Fatalf("failed to start tracing: %v", err)
		}
		runtime.GC()
		trace.Stop()
	}

	// Start tracing again, this time writing out the result.
	if err := trace.Start(os.Stdout); err != nil {
		log.Fatalf("failed to start tracing: %v", err)
	}
	runtime.GC()
	trace.Stop()