writeErrStr(failthreadcreate)
		exit(1)
	}

	// Find out OS stack size for our own stack guard.
	var stacksize uintptr
	if pthread_attr_getstacksize(&attr, &stacksize) != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
	mp.g0.stack.hi = stacksize // for mstart

	// Tell the pthread library we won't join with this thread.
	if pthread_attr_setdetachstate(&attr, _PTHREAD_CREATE_DETACHED) != 0 {

	if err != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}

	// Find out OS stack size for our own stack guard.
	var stacksize uintptr
	if pthread_attr_getstacksize(&attr, &stacksize) != 0 {
		writeErrStr(failthreadcreate)
		exit(1)
	}
	mp.g0.stack.hi = stacksize // for mstart

	// Tell the pthread library we won't join with this thread.
	if pthread_attr_setdetachstate(&attr, _PTHREAD_CREATE_DETACHED) != 0 {

	// utilizing c-shared/c-archive force external linking.
	param := thrparam{
		start_func: uintptr(fn),
		arg:        nil,
		stack_base: uintptr(stack), //+stacksize?
		stack_size: stacksize,
		child_tid:  nil, // minit will record tid
		parent_tid: nil,
		tls_base:   unsafe.Pointer(&m0.tls[0]),
		tls_size:   unsafe.Sizeof(m0.tls),
	}

	var oset sigset

	MOVD	$_rt0_arm64_linux_lib_go(SB), R0
	MOVD	$0, R1
	SUB	$16, RSP		// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R4)
	ADD	$16, RSP
	B	restore

nocgo:
	MOVD	$0x800000, R0                     // stacksize = 8192KB
	MOVD	$_rt0_arm64_linux_lib_go(SB), R1
	MOVD	R0, 8(RSP)
	MOVD	R1, 16(RSP)
	MOVD	$runtime·newosproc0(SB),R4
	BL	(R4)

restore:
	// Restore callee-save registers.
	RESTORE_R19_TO_R28(24)

	MOVD	$_rt0_arm64_freebsd_lib_go(SB), R0
	MOVD	$0, R1
	SUB	$16, RSP	// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R4)
	ADD	$16, RSP
	B	restore

nocgo:
	MOVD	$0x800000, R0                     // stacksize = 8192KB
	MOVD	$_rt0_arm64_freebsd_lib_go(SB), R1
	MOVD	R0, 8(RSP)
	MOVD	R1, 16(RSP)
	MOVD	$runtime·newosproc0(SB),R4
	BL	(R4)

restore:
	// Restore callee-save registers.
	RESTORE_R19_TO_R28(24)

		return
	}

	stacksize := text.To.Offset
	if stacksize == -8 {
		// Historical way to mark NOFRAME.
		text.From.Sym.Set(obj.AttrNoFrame, true)
		stacksize = 0
	}
	if stacksize < 0 {
		ctxt.Diag("negative frame size %d - did you mean NOFRAME?", stacksize)
	}
	if text.From.Sym.NoFrame() {
		if stacksize != 0 {

	MOVV	_cgo_sys_thread_create(SB), R19
	BEQ	R19, nocgo
	MOVV	$_rt0_loong64_linux_lib_go(SB), R4
	MOVV	$0, R5
	JAL	(R19)
	JMP	restore

nocgo:
	MOVV	$0x800000, R4                     // stacksize = 8192KB
	MOVV	$_rt0_loong64_linux_lib_go(SB), R5
	MOVV	R4, 8(R3)
	MOVV	R5, 16(R3)
	MOVV	$runtime·newosproc0(SB), R19
	JAL	(R19)

restore:
	// Restore callee-save registers.
	RESTORE_R22_TO_R31(3*8)

	MOVD	$_rt0_arm64_netbsd_lib_go(SB), R0
	MOVD	$0, R1
	SUB	$16, RSP		// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R4)
	ADD	$16, RSP
	B	restore

nocgo:
	MOVD	$0x800000, R0                     // stacksize = 8192KB
	MOVD	$_rt0_arm64_netbsd_lib_go(SB), R1
	MOVD	R0, 8(RSP)
	MOVD	R1, 16(RSP)
	MOVD	$runtime·newosproc0(SB),R4
	BL	(R4)

restore:
	// Restore callee-save registers.
	RESTORE_R19_TO_R28(24)

	MOVD	$_rt0_arm64_openbsd_lib_go(SB), R0
	MOVD	$0, R1
	SUB	$16, RSP		// reserve 16 bytes for sp-8 where fp may be saved.
	BL	(R4)
	ADD	$16, RSP
	B	restore

nocgo:
	MOVD	$0x800000, R0                     // stacksize = 8192KB
	MOVD	$_rt0_arm64_openbsd_lib_go(SB), R1
	MOVD	R0, 8(RSP)
	MOVD	R1, 16(RSP)
	MOVD	$runtime·newosproc0(SB),R4
	BL	(R4)

restore:
	// Restore callee-save registers.
	RESTORE_R19_TO_R28(24)

	MOV	_cgo_sys_thread_create(SB), T0
	BEQZ	T0, nocgo
	MOV	$_rt0_riscv64_freebsd_lib_go(SB), A0
	MOV	$0, A1
	JALR	RA, T0
	JMP	restore

nocgo:
	MOV	$0x800000, A0                     // stacksize = 8192KB
	MOV	$_rt0_riscv64_freebsd_lib_go(SB), A1
	MOV	A0, 8(X2)
	MOV	A1, 16(X2)
	MOV	$runtime·newosproc0(SB), T0
	JALR	RA, T0

restore:
	// Restore callee-save registers, along with X1 (LR).