tls_size:   unsafe.Sizeof(mp.tls),
	}

	var oset sigset
	sigprocmask(_SIG_SETMASK, &sigset_all, &oset)
	ret := retryOnEAGAIN(func() int32 {
		errno := thr_new(&param, int32(unsafe.Sizeof(param)))
		// thr_new returns negative errno
		return -errno
	})
	sigprocmask(_SIG_SETMASK, &oset, nil)
	if ret != 0 {

	MOVW	mode+8(FP), A1
	MOVW	val+12(FP), A2
	MOV	uaddr1+16(FP), A3
	MOV	ut+24(FP), A4
	MOV	$SYS__umtx_op, T0
	ECALL
	BEQ	T0, ZERO, ok
	NEG	A0, A0
ok:
	MOVW	A0, ret+32(FP)
	RET

// func thr_new(param *thrparam, size int32) int32
TEXT runtime·thr_new(SB),NOSPLIT,$0
	MOV	param+0(FP), A0
	MOVW	size+8(FP), A1
	MOV	$SYS_thr_new, T0
	ECALL
	BEQ	T0, ZERO, ok
	NEG	A0, A0
ok:
	MOVW	A0, ret+16(FP)
	RET

	MOVW	mode+8(FP), R1
	MOVW	val+12(FP), R2
	MOVD	uaddr1+16(FP), R3
	MOVD	ut+24(FP), R4
	MOVD	$SYS__umtx_op, R8
	SVC
	BCC	ok
	NEG	R0, R0
ok:
	MOVW	R0, ret+32(FP)
	RET

// func thr_new(param *thrparam, size int32) int32
TEXT runtime·thr_new(SB),NOSPLIT,$0
	MOVD	param+0(FP), R0
	MOVW	size+8(FP), R1
	MOVD	$SYS_thr_new, R8
	SVC
	BCC	ok
	NEG	R0, R0
ok:
	MOVW	R0, ret+16(FP)
	RET

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, \
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, \
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }
	SYS_ABORT2                   = 463 // { int abort2(const char *why, int nargs, void **args); }

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, \
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, \
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }
	SYS_ABORT2                   = 463 // { int abort2(const char *why, int nargs, void **args); }

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, \
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, \
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }
	SYS_ABORT2                   = 463 // { int abort2(const char *why, int nargs, void **args); }

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, u_long val, void *uaddr1, void *uaddr2); }
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, int param_size); }
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, u_long val, void *uaddr1, void *uaddr2); }
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, int param_size); }
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, u_long val, void *uaddr1, void *uaddr2); }
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, int param_size); }
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }

	SYS_AUDITCTL                 = 453 // { int auditctl(char *path); }
	SYS__UMTX_OP                 = 454 // { int _umtx_op(void *obj, int op, u_long val, void *uaddr1, void *uaddr2); }
	SYS_THR_NEW                  = 455 // { int thr_new(struct thr_param *param, int param_size); }
	SYS_SIGQUEUE                 = 456 // { int sigqueue(pid_t pid, int signum, void *value); }