shithub: riscv

ref: 8043614f797a269cfc9772998a3a1d46c139a1b7
dir: /sys/src/libc/power/tas.s/

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TEXT	_tas(SB), 1, $-4
	MOVW	R3, R4
	MOVW	$0xdeaddead,R5
tas1:
/*	DCBF	(R4)			 	fix for 603x bug */
	SYNC
	LWAR	(R4), R3
	CMP	R3, $0
	BNE	tas0
	DCBT	(R4)				/* fix 405 errata cpu_210 */
	STWCCC	R5, (R4)
	BNE	tas1
tas0:
	RETURN