//    since then we skip dropm to reuse the m in the first call.
	MOVD	savedm-8(SP), R6
	CMPBNE	R6, $0, droppedm

	// Skip dropm to reuse it in the next call, when a pthread key has been created.
	MOVD	_cgo_pthread_key_created(SB), R6
	// It means cgo is disabled when _cgo_pthread_key_created is a nil pointer, need dropm.
	CMPBEQ	R6, $0, dropm
	MOVD	(R6), R6
	CMPBNE	R6, $0, droppedm

dropm:

	// Load the current g.
	BL	runtime·load_g(SB)

#ifdef GO_PPC64X_HAS_FUNCDESC
	// Load the real entry address from the first slot of the function descriptor.
	// The first argument fn might be null, that means dropm in pthread key destructor.
	CMP	R3, $0
	BEQ	nil_fn
	MOVD	8(R3), R2
	MOVD	(R3), R3
nil_fn:
#endif
	MOVD	R3, FIXED_FRAME+0(R1)	// fn unsafe.Pointer
	MOVD	R4, FIXED_FRAME+8(R1)	// a unsafe.Pointer

	//    since then we skip dropm to reuse the m in the first call.
	MOVD	savedm-8(SP), R6
	CBNZ	R6, droppedm

	// Skip dropm to reuse it in the next call, when a pthread key has been created.
	MOVD	_cgo_pthread_key_created(SB), R6
	// It means cgo is disabled when _cgo_pthread_key_created is a nil pointer, need dropm.
	CBZ	R6, dropm
	MOVD	(R6), R6
	CBNZ	R6, droppedm

dropm:

	//    since then we skip dropm to reuse the m in the first call.
	MOVD	savedm-8(SP), R6
	CMP	R6, $0
	BNE	droppedm

	// Skip dropm to reuse it in the next call, when a pthread key has been created.
	MOVD	_cgo_pthread_key_created(SB), R6
	// It means cgo is disabled when _cgo_pthread_key_created is a nil pointer, need dropm.
	CMP	R6, $0
	BEQ	dropm
	MOVD	(R6), R6
	CMP	R6, $0
	BNE	droppedm

func minit() {
	getg().m.procid = uint64(getthrid())
	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.

func minit() {
	getg().m.procid = uint64(lwp_gettid())
	minitSignals()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	getg().m.procid = 0
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.

	//    since then we skip dropm to reuse the m in the first call.
	MOVQ	savedm-8(SP), BX
	CMPQ	BX, $0
	JNE	done

	// Skip dropm to reuse it in the next call, when a pthread key has been created.
	MOVQ	_cgo_pthread_key_created(SB), AX
	// It means cgo is disabled when _cgo_pthread_key_created is a nil pointer, need dropm.
	CMPQ	AX, $0
	JEQ	dropm
	CMPQ	(AX), $0
	JNE	done

dropm:

	gp.m.newSigstack = true

	minitSignalMask()
}

// Called from dropm to undo the effect of an minit.
//
//go:nosplit
func unminit() {
	unminitSignals()
	// Don't clear procid, it is used by locking (semawake), and locking
	// must continue working after unminit.
}

// Called from exitm, but not from drop, to undo the effect of thread-owned

		exits(&emptystatus[0])
	}
	// Mask all SSE floating-point exceptions
	// when running on the 64-bit kernel.
	setfpmasks()
}

// Called from dropm to undo the effect of an minit.
func unminit() {
}

// Called from exitm, but not from drop, to undo the effect of thread-owned
// resources in minit, semacreate, or elsewhere. Do not take locks after calling this.
func mdestroy(mp *m) {
}

	}

	// sp is not within gsignal stack, g0 stack, or sigaltstack. Bad.
	setg(nil)
	needm(true)
	if st.ss_flags&_SS_DISABLE != 0 {
		noSignalStack(sig)
	} else {
		sigNotOnStack(sig, sp, mp)
	}
	dropm()
	return false
}

// crashing is the number of m's we have waited for when implementing
// GOTRACEBACK=crash when a signal is received.
var crashing atomic.Int32