// (i.e. the G has been blocked in a syscall).
		gs.syscallBegin(start, ev.Proc(), ev.Stack())
		g.inSyscall[ev.Proc()] = gs
	}
	// Check if we're exiting a non-blocking syscall.
	_, didNotBlock := g.inSyscall[ev.Proc()]
	if from == trace.GoSyscall && didNotBlock {
		gs.syscallEnd(ev.Time(), false, ctx)
		delete(g.inSyscall, ev.Proc())
	}

	// Note down the goroutine transition.

)

type GoroutineCountersArg struct {
	Running   uint64
	Runnable  uint64
	GCWaiting uint64
}

type ThreadCountersArg struct {
	Running   int64
	InSyscall int64
}

type ThreadIDArg struct {
	ThreadID uint64

	tl.eventWriter(traceGoSyscall, procStatus).commit(ev)
}

// ProcSteal indicates that our current M stole a P from another M.
//
// inSyscall indicates that we're stealing the P from a syscall context.
//
// The caller must have ownership of pp.
func (tl traceLocker) ProcSteal(pp *p, inSyscall bool) {
	// Grab the M ID we stole from.
	mStolenFrom := pp.trace.mSyscallID
	pp.trace.mSyscallID = -1

		e.OptionalEvent(&format.Event{
			Name:  "Threads",
			Phase: "C",
			Time:  viewerTime(ts),
			PID:   1,
			Arg: &format.ThreadCountersArg{
				Running:   int64(e.threadStats[ThreadStateRunning]),
				InSyscall: int64(e.threadStats[ThreadStateInSyscall]),
				// TODO(mknyszek): Why is InSyscallRuntime not included here?
			},
		})
	}
	e.prevThreadStats = e.threadStats
}

	mp.incgo = false
	mp.ncgo--

	osPreemptExtExit(mp)

	// Save current syscall parameters, so m.winsyscall can be
	// used again if callback decide to make syscall.
	winsyscall := mp.winsyscall

	exitsyscall()

	getg().m.winsyscall = winsyscall

	// Note that raceacquire must be called only after exitsyscall has
	// wired this M to a P.
	if raceenabled {

	// calls back into Go.
	c := &getg().m.winsyscall
	c.fn = fn
	c.n = uintptr(len(args))
	if c.n != 0 {
		c.args = uintptr(noescape(unsafe.Pointer(&args[0])))
	}
	cgocall(asmstdcallAddr, unsafe.Pointer(c))
	// cgocall may reschedule us on to a different M,
	// but it copies the return values into the new M's
	// so we can read them from there.
	c = &getg().m.winsyscall
	return c.r1, c.r2, c.err

		g:            gp.guintptr(),
		cgoCtxt:      len(gp.cgoCtxt) - 1,
		calleeFuncID: abi.FuncIDNormal,
		flags:        flags,
	}

	isSyscall := frame.pc == pc0 && frame.sp == sp0 && pc0 == gp.syscallpc && sp0 == gp.syscallsp
	u.resolveInternal(true, isSyscall)
}

func (u *unwinder) valid() bool {
	return u.frame.pc != 0
}

// resolveInternal fills in u.frame based on u.frame.fn, pc, and sp.
//

// go run mksyscall_zos_s390x.go -o_sysnum zsysnum_zos_s390x.go -o_syscall zsyscall_zos_s390x.go -i_syscall syscall_zos_s390x.go -o_asm zsymaddr_zos_s390x.s
// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build zos && s390x
#include "textflag.h"

//  provide the address of function variable to be fixed up.

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

TEXT ·get_FlistxattrAddr(SB), NOSPLIT|NOFRAME, $0-8

	// these are here because they are too large to be on the stack
	// of low-level NOSPLIT functions.
	libcall    libcall
	libcallpc  uintptr // for cpu profiler
	libcallsp  uintptr
	libcallg   guintptr
	winsyscall winlibcall // stores syscall parameters on windows

	vdsoSP uintptr // SP for traceback while in VDSO call (0 if not in call)
	vdsoPC uintptr // PC for traceback while in VDSO call

// go run mksyscall_zos_s390x.go -o_sysnum zsysnum_zos_s390x.go -o_syscall zsyscall_zos_s390x.go -i_syscall syscall_zos_s390x.go -o_asm zsymaddr_zos_s390x.s
// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build zos && s390x

package unix

const (
	SYS_LOG                             = 0x17  // 23
	SYS_COSH                            = 0x18  // 24
	SYS_TANH                            = 0x19  // 25