DMB	MB_ISH
	MOVW	time_hi2(R3), R2
	CMP	R1, R2
	BNE	wall

	// w = R1:R0 in 100ns untis
	// convert to Unix epoch (but still 100ns units)
	#define delta 116444736000000000
	SUB.S   $(delta & 0xFFFFFFFF), R0
	SBC     $(delta >> 32), R1

	// Convert to nSec
	MOVW    $100, R2
	MULLU   R0, R2, (R4, R3)    // R4:R3 = R1:R0 * R2
	MULA    R1, R2, R4, R4
	// w = R2:R1 in nSec
	MOVW    R3, R1	      // R4:R3 -> R2:R1
	MOVW    R4, R2

	RET


// func subVV(z, x, y []Word) (c Word)
// (same as addVV except for SBC instead of ADC and label names)
TEXT ·subVV(SB),NOSPLIT,$0
	SUB.S	$0, R0		// clear borrow flag
	MOVW	z+0(FP), R1
	MOVW	z_len+4(FP), R4
	MOVW	x+12(FP), R2
	MOVW	y+24(FP), R3
	ADD	R4<<2, R1, R4
	B E2
L2:
	MOVW.P	4(R2), R5
	MOVW.P	4(R3), R6
	SBC.S	R6, R5
	MOVW.P	R5, 4(R1)
E2:
	TEQ	R1, R4
	BNE L2

	MOVW	$0, R0

	"ORN",
	"ORNW",
	"ORR",
	"ORRW",
	"PRFM",
	"PRFUM",
	"RBIT",
	"RBITW",
	"REM",
	"REMW",
	"REV",
	"REV16",
	"REV16W",
	"REV32",
	"REVW",
	"ROR",
	"RORW",
	"SBC",
	"SBCS",
	"SBCSW",
	"SBCW",
	"SBFIZ",
	"SBFIZW",
	"SBFM",
	"SBFMW",
	"SBFX",
	"SBFXW",
	"SCVTFD",
	"SCVTFS",
	"SCVTFWD",
	"SCVTFWS",
	"SDIV",
	"SDIVW",
	"SEV",