case "gstatus":
		u = uint64(arg.(go122.GoStatus))
	case "g":
		u = uint64(arg.(trace.GoID))
	case "m":
		u = uint64(arg.(trace.ThreadID))
	case "p":
		u = uint64(arg.(trace.ProcID))
	case "string":
		u = b.gen.String(arg.(string))
	case "task":
		u = uint64(arg.(trace.TaskID))
	default:
		panic(fmt.Sprintf("unsupported arg type %q for spec %q", typStr, argSpec))
	}
	return u
}

		hi := g0.stack.hi
		lo := g0.stack.lo
		g0.stack.hi = sp + 1024
		g0.stack.lo = sp - 32*1024
		g0.stackguard0 = g0.stack.lo + stackGuard
		g0.stackguard1 = g0.stackguard0

		print("M ", mp.id, " procid ", mp.procid, " runtime: cgocallback with sp=", hex(sp), " out of bounds [", hex(lo), ", ", hex(hi), "]")
		print("\n")
		exit(2)
	}

	if !mp.isextra {
		// We allocated the stack for standard Ms. Don't replace the

		if err != nil {
			return nil, err
		}
		mid := ThreadID(m)

		// Read the sample's P.
		p, err := binary.ReadUvarint(r)
		if err != nil {
			return nil, err
		}
		pid := ProcID(p)

		// Read the sample's G.
		g, err := binary.ReadUvarint(r)
		if err != nil {
			return nil, err
		}
		goid := GoID(g)
		if g == 0 {
			goid = NoGoroutine
		}

		print("runtime.minit: duplicatehandle failed; errno=", getlasterror(), "\n")
		throw("runtime.minit: duplicatehandle failed")
	}

	mp := getg().m
	lock(&mp.threadLock)
	mp.thread = thandle
	mp.procid = uint64(stdcall0(_GetCurrentThreadId))

	// Configure usleep timer, if possible.
	if mp.highResTimer == 0 && haveHighResTimer {
		mp.highResTimer = createHighResTimer()
		if mp.highResTimer == 0 {

	iterate_itabs(itab_callback)
}

func dumpms() {
	for mp := allm; mp != nil; mp = mp.alllink {
		dumpint(tagOSThread)
		dumpint(uint64(uintptr(unsafe.Pointer(mp))))
		dumpint(uint64(mp.id))
		dumpint(mp.procid)
	}
}

//go:systemstack
func dumpmemstats(m *MemStats) {
	assertWorldStopped()

	// These ints should be identical to the exported
	// MemStats structure and should be ordered the same

	RET

	// In child, on new stack.
	// initialize essential registers
	BL	runtime·reginit(SB)
	MOVD	-32(R1), R7
	CMP	R7, $1234
	BEQ	2(PC)
	MOVD	R0, 0(R0)

	// Initialize m->procid to Linux tid
	SYSCALL $SYS_gettid

	MOVD	-24(R1), R12       // fn
	MOVD	-16(R1), R8        // g
	MOVD	-8(R1), R7         // m

	CMP	R7, $0
	BEQ	nog
	CMP	R8, $0
	BEQ	nog

//
// Must be called with a valid P.
func (tl traceLocker) GoSysCall() {
	// Scribble down the M that the P is currently attached to.
	pp := tl.mp.p.ptr()
	pp.trace.mSyscallID = int64(tl.mp.procid)
	tl.eventWriter(traceGoRunning, traceProcRunning).commit(traceEvGoSyscallBegin, pp.trace.nextSeq(tl.gen), tl.stack(1))
}

// GoSysExit emits a GoSyscallEnd event, possibly along with a GoSyscallBlocked event

			// that's running for the first time in this generation. Therefore,
			// this should be relatively fast.
			s := suspendG(gp)
			if !s.dead {
				ug.goid = s.g.goid
				if s.g.m != nil {
					ug.mid = int64(s.g.m.procid)
				}
				ug.status = readgstatus(s.g) &^ _Gscan
				ug.waitreason = s.g.waitreason
				ug.inMarkAssist = s.g.inMarkAssist
				ug.stackID = traceStack(0, gp, gen)
			}
			resumeG(s)

	morebuf gobuf  // gobuf arg to morestack
	divmod  uint32 // div/mod denominator for arm - known to liblink
	_       uint32 // align next field to 8 bytes

	// Fields not known to debuggers.
	procid        uint64            // for debuggers, but offset not hard-coded
	gsignal       *g                // signal-handling g
	goSigStack    gsignalStack      // Go-allocated signal handling stack

	// destroyed respectively. The m then might get reused with a different procid but
	// still with a reference to oldp, and still with the same syscalltick. The next
	// time a G is "created" in needm, it'll return and quietly reacquire its P from a
	// different m with a different procid, which will confuse the trace parser. By
	// trashing syscalltick, we ensure that it'll appear as if we lost the P to the