shithub: riscv

ref: 7186be0424ba65942a13b7706017c6ef4338f219
dir: /sys/src/ape/lib/ap/arm64/getfcr.s/

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#define	SYSARG5(op0,op1,Cn,Cm,op2)	((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5)

#define	FPCR		SPR(SYSARG5(3,3,4,4,0))
#define	FPSR		SPR(SYSARG5(3,3,4,4,1))

TEXT	setfcr(SB), 1, $-4
	MSR	R0, FPCR
	RETURN

TEXT	getfcr(SB), 1, $-4
	MRS	FPCR, R0
	RETURN

TEXT	getfsr(SB), 1, $-4
	MRS	FPSR, R0
	RETURN

TEXT	setfsr(SB), 1, $-4
	MSR	R0, FPSR
	RETURN