code: purgatorio

ref: 063c3f398e949895bb9795539e83a2e0be364376
dir: /libkern/getfcr-386.s/

View raw version 
TEXT	setfcr(SB), $0
	MOVL	p+0(FP),AX
	XORB	$0x3f,AX
	PUSHW	AX
	WAIT
	FLDCW	0(SP)
	POPW	AX
	RET

TEXT	getfcr(SB), $0
	PUSHW	AX
	WAIT
	FSTCW	0(SP)
	POPW	AX
	XORB	$0x3f,AX
	RET

TEXT	getfsr(SB), $0
	WAIT
	FSTSW	AX
	RET

TEXT	setfsr(SB), $0
	WAIT
	FCLEX
	RET