84d9c625bf
- Fix for possible unset uid/gid in toproto
- Fix for default mtree style
- Update libelf
- Importing libexecinfo
- Resynchronize GCC, mpc, gmp, mpfr
- build.sh: Replace params with show-params.
This has been done as the make target has been renamed in the same
way, while a new target named params has been added. This new
target generates a file containing all the parameters, instead of
printing it on the console.
- Update test48 with new etc/services (Fix by Ben Gras <ben@minix3.org)
get getservbyport() out of the inner loop
Change-Id: Ie6ad5226fa2621ff9f0dee8782ea48f9443d2091
82 lines
2.6 KiB
ArmAsm
82 lines
2.6 KiB
ArmAsm
/*-
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* Copyright (c) 2011 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 <machine/asm.h>
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#include <sys/errno.h>
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RCSID("$NetBSD: n_scalbn.S,v 1.4 2013/05/24 12:45:40 martin Exp $")
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WEAK_ALIAS(scalbn,_scalbn)
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WEAK_ALIAS(ldexp,_scalbn)
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WEAK_ALIAS(ldexpf,_scalbnf)
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WEAK_ALIAS(ldexpl,_scalbnl)
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ENTRY(_scalbnf, 0)
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cvtfd 4(%ap), %r0
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movl 8(%ap), %r2
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jr 1f
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ALTENTRY(_scalbnl)
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ENTRY(_scalbn, 0)
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movd 4(%ap), %r0
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movl 12(%ap), %r2
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/*
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* First see if the result will be within bounds
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*/
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1: cmpl %r2,$(256+55)
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jgeq overflow
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cmpl %r2,$-(256+55)
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jleq underflow
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extzv $7, $9, %r0, %r3 /* extract exponent */
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jneq 5f /* 0 * N is still 0 */
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cmpw %r3, $-256 /* is this a NAN? */
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jgtr 2f /* nope */
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ret
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2: movzbl %r3, %r3 /* clear sign bit */
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addl2 %r2, %r3 /* add to exponent */
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jleq underflow /* <= 0? */
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3: jbs $8, %r3, overflow /* did exponent overflow? */
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insv $7, $8, %r3, %r0 /* replace exponent */
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ret
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underflow:
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clrq %r0 /* return 0.0 */
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jr copysign /* or mabye -0.0 */
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overflow:
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pushl $ERANGE /* overflow */
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calls $1, _C_LABEL(infnan) /* possibly signal */
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copysign:
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jbc $15, 4(%ap), 5f /* if clear, don't set sign-bit */
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bisw2 $0x8000, %r0 /* preserve sign-bit */
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5:
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ret
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