MOVL	$331, AX		// sys_sched_yield
	SYSCALL
	RET

TEXT runtime·sigprocmask(SB),NOSPLIT,$0
	MOVL	how+0(FP), DI		// arg 1 - how
	MOVQ	new+8(FP), SI		// arg 2 - set
	MOVQ	old+16(FP), DX		// arg 3 - oset
	MOVL	$340, AX		// sys_sigprocmask
	SYSCALL
	JAE	2(PC)
	MOVL	$0xf1, 0xf1  // crash
	RET

// int32 runtime·kqueue(void);
TEXT runtime·kqueue(SB),NOSPLIT,$0
	MOVQ	$0, DI
	MOVQ	$0, SI

	RET
fail:
	MOVD	$0, R0
	MOVD	R0, (R0)		// crash

TEXT runtime·sigprocmask(SB),NOSPLIT,$0
	MOVW	how+0(FP), R0		// arg 1 - how
	MOVD	new+8(FP), R1		// arg 2 - set
	MOVD	old+16(FP), R2		// arg 3 - oset
	SVC	$SYS___sigprocmask14
	BCS	fail
	RET
fail:
	MOVD	$0, R0
	MOVD	R0, (R0)		// crash

TEXT sigreturn_tramp<>(SB),NOSPLIT,$-8
	MOVD	g, R0
	SVC	$SYS_setcontext
	MOVD	$0, R0