Library which implements the softfloat primitives using FP instructions
Currently contains only untested MIPS routines. XXX move arm libc_vfp to here.
This commit is contained in:
matt
parent
143eb5c5cf
commit
fdd524d4cc
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@ -0,0 +1,26 @@
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# $NetBSD: Makefile,v 1.1 2016/07/14 01:59:18 matt Exp $
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#
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USE_SHLIBDIR= yes
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.include <bsd.own.mk>
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LIBC_MACHINE_CPU?= ${MACHINE_CPU}
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.if exists(arch/${LIBC_MACHINE_CPU})
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.include "arch/${LIBC_MACHINE_CPU}/Makefile.inc"
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.PATH: ${.CURDIR}/arch/${LIBC_MACHINE_CPU}
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.elif exists(arch/${MACHINE_ARCH})
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.include "arch/${MACHINE_ARCH}/Makefile.inc"
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.PATH: ${.CURDIR}/arch/${MACHINE_ARCH}
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.elif exists(arch/${MACHINE}
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.include "arch/${MACHINE}/Makefile.inc"
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.PATH: ${.CURDIR}/arch/${MACHINE}
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.endif
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.if !empty(SRCS)
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LIB?= c_fp
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.include <bsd.lib.mk>
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.endif
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@ -0,0 +1,8 @@
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# $NetBSD: Makefile.inc,v 1.1 2016/07/14 01:59:18 matt Exp $
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#
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CPUFLAGS+= -mhard-float
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SRCS= fpsf.S fpdf.S
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AFLAGS.vfpsf.S+= -mhard-float
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AFLAGS.vfpdf.S+= -mhard-float
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@ -0,0 +1,245 @@
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/*-
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* Copyright (c) 2013 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <mips/asm.h>
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RCSID("$NetBSD: fpdf.S,v 1.1 2016/07/14 01:59:18 matt Exp $")
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/*
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* This file provides softfloat compatible routines which use FP instructions
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* to do the actual work. This should give near hard-float performance while
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* being compatible with soft-float code.
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*
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* This file implements the double precision floating point routines.
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*/
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#ifdef MIPS3
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#define COP1_SYNC nop
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#else
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#define COP1_SYNC
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#endif
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LEAF_NOPROFILE(__adddf3)
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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add.d $f0, $f12, $f14
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dmfc1 v0, $f0
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jr ra
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END(__adddf3)
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LEAF_NOPROFILE(__subdf3)
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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sub.d $f0, $f12, $f14
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dmfc1 v0, $f0
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jr ra
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END(__subdf3)
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LEAF_NOPROFILE(__muldf3)
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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mul.d $f0, $f12, $f14
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dmfc1 v0, $f0
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jr ra
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END(__muldf3)
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LEAF_NOPROFILE(__divdf3)
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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div.d $f0, $f12, $f14
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dmfc1 v0, $f0
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jr ra
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END(__divdf3)
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LEAF_NOPROFILE(__negdf2)
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dmtc1 a0, $f12
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COP1_SYNC
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neg.d $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__negdf2)
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LEAF_NOPROFILE(__extendsfdf2)
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dmtc1 a0, $f12
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COP1_SYNC
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cvt.d.s $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__extendsfdf2)
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LEAF_NOPROFILE(__fixdfdi)
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dmtc1 a0, $f12
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COP1_SYNC
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trunc.l.d $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__fixdfdi)
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LEAF_NOPROFILE(__fixdfsi)
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dmtc1 a0, $f12
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COP1_SYNC
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trunc.w.d $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__fixdfsi)
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LEAF_NOPROFILE(__fixunsdfdi)
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lui t0, 0x43e0 # 9223372036854775808.0
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dsll t0, t0, 32
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mtc1 t0, $f0
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mtc1 a0, $f12
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COP1_SYNC
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sub.d $f0, $f12, $f0 # convert to signed
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trunc.l.d $f0, $f0
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dmfc1 v0, $f0
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li v1, 1
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dsll v1, v1, 63
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add v0, v0, v1 # convert to unsigned
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jr ra
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END(__fixunsdfdi)
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LEAF_NOPROFILE(__fixunsdfsi)
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lui t0, 0x41e0 # 2147483648.0
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dsll t0, t0, 32
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mtc1 t0, $f0
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mtc1 a0, $f12
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COP1_SYNC
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sub.d $f0, $f12, $f0 # convert to signed
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trunc.w.d $f0, $f0
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lui v1, 0x8000 # 0xffffffff80000000
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mfc1 v0, $f0
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add v0, v0, v1 # convert to unsigned
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jr ra
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END(__fixunsdfsi)
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LEAF_NOPROFILE(__floatdidf)
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dmtc1 a0, $f12
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COP1_SYNC
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cvt.d.l $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__floatdidf)
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LEAF_NOPROFILE(__floatsidf)
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mtc1 a0, $f12
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COP1_SYNC
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cvt.d.w $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__floatsidf)
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LEAF_NOPROFILE(__floatundidf)
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li t0, 1
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dsll t0, t0, 63
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dsub a0, a0, t0
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dmtc1 a0, $f12
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dmtc1 t0, $f14
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COP1_SYNC
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cvt.d.l $f0, $f12
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cvt.d.l $f2, $f14
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add.d $f0, $f0, $f2
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dmfc1 v0, $f0
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jr ra
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END(__floatundidf)
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LEAF_NOPROFILE(__floatunsidf)
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sll a0, a0, 0
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dmtc1 a0, $f12
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COP1_SYNC
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cvt.d.l $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__floatunsidf)
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STRONG_ALIAS(__eqdf2, __nedf2)
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LEAF_NOPROFILE(__nedf2)
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.set push
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.set noreorder
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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c.eq.d $f12, $f14
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bc1f 2f
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li v0, 1
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move v0, zero
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2: jr ra
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nop
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.set pop
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END(__nedf2)
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STRONG_ALIAS(__gedf2, __ltdf2)
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LEAF_NOPROFILE(__ltdf2)
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.set push
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.set noreorder
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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c.olt.d $f12, $f14
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bc1t 2f
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li v0, -1
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move v0, zero
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2: jr ra
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nop
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.set pop
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END(__ltdf2)
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STRONG_ALIAS(__gtdf2, __ledf2)
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LEAF_NOPROFILE(__ledf2)
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.set push
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.set noreorder
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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c.ole.d $f12, $f14
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bc1f 2f
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li v0, 1
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move v0, zero
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2: jr ra
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nop
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.set pop
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END(__ledf2)
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LEAF_NOPROFILE(__unorddf2)
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.set push
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.set noreorder
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dmtc1 a0, $f12
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dmtc1 a1, $f14
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COP1_SYNC
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c.un.d $f12, $f14
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bc1t 2f
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li v0, 1
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move v0, zero
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2: jr ra
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nop
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.set pop
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END(__unorddf2)
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@ -0,0 +1,243 @@
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/*-
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* Copyright (c) 2016 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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||||
* notice, this list of conditions and the following disclaimer.
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||||
* 2. Redistributions in binary form must reproduce the above copyright
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||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <mips/asm.h>
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RCSID("$NetBSD: fpsf.S,v 1.1 2016/07/14 01:59:18 matt Exp $")
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/*
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* This file provides softfloat compatible routines which use FP instructions
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* to do the actual work. This should give near hard-float performance while
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* being compatible with soft-float code.
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*
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* This file implements the single precision floating point routines.
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*/
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#ifdef MIPS3
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#define COP1_SYNC nop
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#else
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#define COP1_SYNC
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#endif
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LEAF_NOPROFILE(__addsf3)
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mtc1 a0, $f12
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mtc1 a1, $f14
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COP1_SYNC
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add.s $f0, $f12, $f14
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mfc1 v0, $f0
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jr ra
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END(__addsf3)
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LEAF_NOPROFILE(__subsf3)
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mtc1 a0, $f12
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mtc1 a1, $f14
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COP1_SYNC
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sub.s $f0, $f12, $f14
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mfc1 v0, $f0
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jr ra
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END(__subsf3)
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LEAF_NOPROFILE(__mulsf3)
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mtc1 a0, $f12
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mtc1 a1, $f14
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COP1_SYNC
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mul.s $f0, $f12, $f14
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mfc1 v0, $f0
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jr ra
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END(__mulsf3)
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LEAF_NOPROFILE(__divsf3)
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mtc1 a0, $f12
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mtc1 a1, $f14
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COP1_SYNC
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div.s $f0, $f12, $f14
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mfc1 v0, $f0
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jr ra
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END(__divsf3)
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LEAF_NOPROFILE(__negsf2)
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mtc1 a0, $f12
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COP1_SYNC
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neg.s $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__negsf2)
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LEAF_NOPROFILE(__truncdfsf2)
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dmtc1 a0, $f12
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COP1_SYNC
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cvt.s.d $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__truncdfsf2)
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LEAF_NOPROFILE(__fixsfdi)
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mtc1 a0, $f12
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COP1_SYNC
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trunc.l.s $f0, $f12
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dmfc1 v0, $f0
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jr ra
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END(__fixsfdi)
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LEAF_NOPROFILE(__fixsfsi)
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mtc1 a0, $f12
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COP1_SYNC
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trunc.w.s $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__fixsfsi)
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LEAF_NOPROFILE(__fixunssfdi)
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lui t0, 0x5f00 # 9223372036854775808.0
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mtc1 t0, $f0
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mtc1 a0, $f12
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COP1_SYNC
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sub.s $f0, $f12, $f0 # convert to signed
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trunc.l.s $f0, $f0
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dmfc1 v0, $f0
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li v1, 1
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dsll v1, v1, 63
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add v0, v0, v1 # convert to unsigned
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jr ra
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END(__fixunssfdi)
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LEAF_NOPROFILE(__fixunssfsi)
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lui t0, 0x4f00 # 2147483648.0
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mtc1 t0, $f0
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mtc1 a0, $f12
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COP1_SYNC
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sub.s $f0, $f12, $f0 # convert to signed
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trunc.w.s $f0, $f0
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mfc1 v0, $f0
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lui v1, 0x8000 # 0xffffffff80000000
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add v0, v0, v1 # convert to unsigned
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jr ra
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END(__fixunssfsi)
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LEAF_NOPROFILE(__floatdisf)
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dmtc1 a0, $f12
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COP1_SYNC
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cvt.s.l $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__floatdisf)
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LEAF_NOPROFILE(__floatsisf)
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mtc1 a0, $f12
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COP1_SYNC
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cvt.s.w $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__floatsisf)
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LEAF_NOPROFILE(__floatundisf)
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li t0, 1
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dsll t0, t0, 63 # 9223372036854775808.0
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dsub a0, a0, t0 # convert to signed
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dmtc1 a0, $f12
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dmtc1 t0, $f14
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COP1_SYNC
|
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cvt.s.l $f0, $f12
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cvt.s.l $f2, $f14
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add.s $f0, $f0, $f2 # convert back to unsigned
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mfc1 v0, $f0
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jr ra
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END(__floatundisf)
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LEAF_NOPROFILE(__floatunsisf)
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sll a0, a0, 0 # sign extend to 64 bits
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dmtc1 a0, $f12
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COP1_SYNC
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cvt.s.l $f0, $f12
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mfc1 v0, $f0
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jr ra
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END(__floatunsisf)
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STRONG_ALIAS(__eqsf2, __nedf2)
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LEAF_NOPROFILE(__nesf2)
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.set push
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.set noreorder
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mtc1 a0, $f12
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mtc1 a1, $f14
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COP1_SYNC
|
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c.eq.s $f12, $f14
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bc1f 2f
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li v0, 1
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move v0, zero
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2: jr ra
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nop
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.set pop
|
||||
END(__nesf2)
|
||||
|
||||
STRONG_ALIAS(__gesf2, __ltdf2)
|
||||
LEAF_NOPROFILE(__ltsf2)
|
||||
.set push
|
||||
.set noreorder
|
||||
mtc1 a0, $f12
|
||||
mtc1 a1, $f14
|
||||
COP1_SYNC
|
||||
c.olt.s $f12, $f14
|
||||
bc1t 2f
|
||||
li v0, -1
|
||||
move v0, zero
|
||||
2: jr ra
|
||||
nop
|
||||
.set pop
|
||||
END(__ltsf2)
|
||||
|
||||
STRONG_ALIAS(__gtsf2, __ledf2)
|
||||
LEAF_NOPROFILE(__lesf2)
|
||||
.set push
|
||||
.set noreorder
|
||||
mtc1 a0, $f12
|
||||
mtc1 a1, $f14
|
||||
COP1_SYNC
|
||||
c.ole.s $f12, $f14
|
||||
bc1f 2f
|
||||
li v0, 1
|
||||
move v0, zero
|
||||
2: jr ra
|
||||
nop
|
||||
.set pop
|
||||
END(__lesf2)
|
||||
|
||||
LEAF_NOPROFILE(__unordsf2)
|
||||
.set push
|
||||
.set noreorder
|
||||
mtc1 a0, $f12
|
||||
mtc1 a1, $f14
|
||||
COP1_SYNC
|
||||
c.un.s $f12, $f14
|
||||
bc1t 2f
|
||||
li v0, 1
|
||||
move v0, zero
|
||||
2: jr ra
|
||||
nop
|
||||
.set pop
|
||||
END(__unordsf2)
|
||||
|
|
@ -0,0 +1,5 @@
|
|||
# $NetBSD: shlib_version,v 1.1 2016/07/14 01:59:18 matt Exp $
|
||||
# Remember to update distrib/sets/lists/base/shl.* when changing
|
||||
#
|
||||
major=0
|
||||
minor=0
|
||||
|
|
@ -0,0 +1,217 @@
|
|||
/* $NetBSD: gcc-softfloat.c,v 1.1 2016/07/14 01:59:18 matt Exp $ */
|
||||
/*-
|
||||
* Copyright (c) 2016 The NetBSD Foundation, Inc.
|
||||
* All rights reserved.
|
||||
*
|
||||
* This code is derived from software contributed to The NetBSD Foundation
|
||||
* by Matt Thomas of 3am Software Foundry.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
||||
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
||||
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
||||
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
||||
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
||||
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
||||
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
||||
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||||
* POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* This contain the softfloat primitives used by GCC.
|
||||
* It can be used to verify the functions invoked by tGCC to do softfloat.
|
||||
* It can also be used to what FP instructions GCC generates to implement the
|
||||
* various primitives. Your arch-dependent code should provide all of these
|
||||
* that are easy to implement.
|
||||
*/
|
||||
|
||||
long long
|
||||
xfixdfdi(double a)
|
||||
{
|
||||
return (long long)a;
|
||||
}
|
||||
|
||||
int
|
||||
xfixdfsi(double a)
|
||||
{
|
||||
return (int)a;
|
||||
}
|
||||
|
||||
unsigned long long
|
||||
xfixunsdfdi(double a)
|
||||
{
|
||||
return (unsigned long long)a;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
xfixunsdfsi(double a)
|
||||
{
|
||||
return (unsigned int)a;
|
||||
}
|
||||
|
||||
double
|
||||
xfloatundidf(unsigned long long a)
|
||||
{
|
||||
return (double) a;
|
||||
}
|
||||
|
||||
double
|
||||
xfloatunsidf(unsigned int a)
|
||||
{
|
||||
return (double) a;
|
||||
}
|
||||
|
||||
double
|
||||
xfloatdidf(long long a)
|
||||
{
|
||||
return (double) a;
|
||||
}
|
||||
|
||||
double
|
||||
xfloatsidf(int a)
|
||||
{
|
||||
return (double) a;
|
||||
}
|
||||
|
||||
double
|
||||
xextendsfdf2(float a)
|
||||
{
|
||||
return (double) a;
|
||||
}
|
||||
|
||||
int
|
||||
xeqdf2(double a, double b)
|
||||
{
|
||||
return a == b;
|
||||
}
|
||||
|
||||
int
|
||||
xnedf2(double a, double b)
|
||||
{
|
||||
return a != b;
|
||||
}
|
||||
|
||||
int
|
||||
xledf2(double a, double b)
|
||||
{
|
||||
return a <= b;
|
||||
}
|
||||
|
||||
int
|
||||
xgtdf2(double a, double b)
|
||||
{
|
||||
return a > b;
|
||||
}
|
||||
|
||||
int
|
||||
xltdf2(double a, double b)
|
||||
{
|
||||
return a < b;
|
||||
}
|
||||
|
||||
int
|
||||
xgedf2(double a, double b)
|
||||
{
|
||||
return a >= b;
|
||||
}
|
||||
|
||||
long long
|
||||
xfixsfdi(float a)
|
||||
{
|
||||
return (long long)a;
|
||||
}
|
||||
|
||||
int
|
||||
xfixsfsi(float a)
|
||||
{
|
||||
return (int)a;
|
||||
}
|
||||
|
||||
unsigned long long
|
||||
xfixunssfdi(float a)
|
||||
{
|
||||
return (unsigned long long)a;
|
||||
}
|
||||
|
||||
unsigned int
|
||||
xfixunssfsi(float a)
|
||||
{
|
||||
return (unsigned int)a;
|
||||
}
|
||||
|
||||
float
|
||||
xfloatundisf(unsigned long long a)
|
||||
{
|
||||
return (float) a;
|
||||
}
|
||||
|
||||
float
|
||||
xfloatunsisf(unsigned int a)
|
||||
{
|
||||
return (float) a;
|
||||
}
|
||||
|
||||
float
|
||||
xfloatdisf(long long a)
|
||||
{
|
||||
return (float) a;
|
||||
}
|
||||
|
||||
float
|
||||
xfloatsisf(int a)
|
||||
{
|
||||
return (float) a;
|
||||
}
|
||||
|
||||
float
|
||||
xtruncdfsf2(double a)
|
||||
{
|
||||
return (float) a;
|
||||
}
|
||||
|
||||
int
|
||||
xeqsf2(float a, float b)
|
||||
{
|
||||
return a == b;
|
||||
}
|
||||
|
||||
int
|
||||
xnesf2(float a, float b)
|
||||
{
|
||||
return a != b;
|
||||
}
|
||||
|
||||
int
|
||||
xlesf2(float a, float b)
|
||||
{
|
||||
return a <= b;
|
||||
}
|
||||
|
||||
int
|
||||
xgtsf2(float a, float b)
|
||||
{
|
||||
return a > b;
|
||||
}
|
||||
|
||||
int
|
||||
xltsf2(float a, float b)
|
||||
{
|
||||
return a < b;
|
||||
}
|
||||
|
||||
int
|
||||
xgesf2(float a, float b)
|
||||
{
|
||||
return a >= b;
|
||||
}
|
||||
Loading…
Reference in New Issue