diff options
author | das <das@FreeBSD.org> | 2008-03-30 21:21:53 +0000 |
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committer | das <das@FreeBSD.org> | 2008-03-30 21:21:53 +0000 |
commit | 39170f049ac46e82c52894edc2a720b83030deaa (patch) | |
tree | ebce9fd8ea4860ab77d5394d252cfc1739a5ad1b /lib/msun/i387 | |
parent | 9a915147fb07a6c1bafe359bf631c5bb09d1d757 (diff) | |
download | FreeBSD-src-39170f049ac46e82c52894edc2a720b83030deaa.zip FreeBSD-src-39170f049ac46e82c52894edc2a720b83030deaa.tar.gz |
Add assembly versions of remquol() and remainderl().
Diffstat (limited to 'lib/msun/i387')
-rw-r--r-- | lib/msun/i387/Makefile.inc | 5 | ||||
-rw-r--r-- | lib/msun/i387/e_remainderl.S | 48 | ||||
-rw-r--r-- | lib/msun/i387/s_remquol.S | 63 |
3 files changed, 114 insertions, 2 deletions
diff --git a/lib/msun/i387/Makefile.inc b/lib/msun/i387/Makefile.inc index 934889c..f387e90 100644 --- a/lib/msun/i387/Makefile.inc +++ b/lib/msun/i387/Makefile.inc @@ -13,8 +13,9 @@ ARCH_SRCS+= e_log10f.S e_logf.S e_remainderf.S \ s_remquof.S s_rintf.S s_scalbnf.S s_significandf.S s_truncf.S # long double counterparts -ARCH_SRCS+= e_sqrtl.S s_ceill.S s_copysignl.S s_floorl.S s_llrintl.S \ - s_logbl.S s_lrintl.S s_rintl.S s_scalbnl.S s_truncl.S +ARCH_SRCS+= e_remainderl.S e_sqrtl.S s_ceill.S s_copysignl.S \ + s_floorl.S s_llrintl.S \ + s_logbl.S s_lrintl.S s_remquol.S s_rintl.S s_scalbnl.S s_truncl.S LDBL_PREC = 64 # XXX 64-bit format, but truncated to 53 bits SYM_MAPS += ${.CURDIR}/i387/Symbol.map diff --git a/lib/msun/i387/e_remainderl.S b/lib/msun/i387/e_remainderl.S new file mode 100644 index 0000000..f5f8197 --- /dev/null +++ b/lib/msun/i387/e_remainderl.S @@ -0,0 +1,48 @@ +/* + * Copyright (c) 1993,94 Winning Strategies, Inc. + * All rights reserved. + * + * 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Winning Strategies, Inc. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. + */ + +/* + * Written by: + * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc. + */ + +#include <machine/asm.h> + +__FBSDID("$FreeBSD$") + +ENTRY(remainderl) + fldt 16(%esp) + fldt 4(%esp) +1: fprem1 + fstsw %ax + sahf + jp 1b + fstp %st(1) + ret diff --git a/lib/msun/i387/s_remquol.S b/lib/msun/i387/s_remquol.S new file mode 100644 index 0000000..64e532c --- /dev/null +++ b/lib/msun/i387/s_remquol.S @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 2005-2008 David Schultz <das@FreeBSD.ORG> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Based on public-domain remainder routine by J.T. Conklin <jtc@NetBSD.org>. + */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + +ENTRY(remquol) + fldt 16(%esp) + fldt 4(%esp) +1: fprem1 + fstsw %ax + sahf + jp 1b + fstp %st(1) +/* Extract the three low-order bits of the quotient from C0,C3,C1. */ + shrl $6,%eax + movl %eax,%ecx + andl $0x108,%eax + rorl $7,%eax + orl %eax,%ecx + roll $4,%eax + orl %ecx,%eax + andl $7,%eax +/* Negate the quotient bits if x*y<0. Avoid using an unpredictable branch. */ + movl 24(%esp),%ecx + xorl 12(%esp),%ecx + movsx %cx,%ecx + sarl $16,%ecx + sarl $16,%ecx + xorl %ecx,%eax + andl $1,%ecx + addl %ecx,%eax +/* Store the quotient and return. */ + movl 28(%esp),%ecx + movl %eax,(%ecx) + ret |