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Mercurial > hg > plan9front / sys/src/ape/lib/9/arm64/getfcr.s

changeset 7190: 41fb44a3b2dc
author: cinap_lenrek@felloff.net
date: Fri, 03 May 2019 21:06:46 +0200
permissions: -rw-r--r--
description: ape: initial support for arm64 
     1 #define	SYSARG5(op0,op1,Cn,Cm,op2)	((op0)<<19|(op1)<<16|(Cn)<<12|(Cm)<<8|(op2)<<5)

     2 

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

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

     5 

     6 TEXT	setfcr(SB), $0

     7 	MSR	R0, FPCR

     8 	RETURN

     9 

    10 TEXT	getfcr(SB), $0

    11 	MRS	FPCR, R0

    12 	RETURN

    13 

    14 TEXT	getfsr(SB), $0

    15 	MRS	FPSR, R0

    16 	RETURN

    17 

    18 TEXT	setfsr(SB), $0

    19 	MSR	R0, FPSR

    20 	RETURN

    21