5d053f461c
is used to set the ELF size attribute for functions. It isn't normally critical but some things can make use of it (gdb for stack traces). Valgrind needs it so I'm adding it in. The problem is present on all branches and on both i386 and amd64.
90 lines
2.6 KiB
ArmAsm
90 lines
2.6 KiB
ArmAsm
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Sean Eric Fagan.
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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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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)modf.s 5.5 (Berkeley) 3/18/91
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*/
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#include <machine/asm.h>
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#if defined(LIBC_SCCS)
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RCSID("$NetBSD: modf.S,v 1.5 1997/07/16 14:37:18 christos Exp $")
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#endif
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__FBSDID("$FreeBSD$");
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/*
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* modf(value, iptr): return fractional part of value, and stores the
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* integral part into iptr (a pointer to double).
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*
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* Written by Sean Eric Fagan (sef@kithrup.COM)
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* Sun Mar 11 20:27:30 PST 1990
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*/
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/* With CHOP mode on, frndint behaves as TRUNC does. Useful. */
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ENTRY(modf)
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/*
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* Set chop mode.
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*/
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fnstcw -12(%rsp)
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movw -12(%rsp),%dx
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orw $3072,%dx
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movw %dx,-16(%rsp)
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fldcw -16(%rsp)
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/*
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* Get integral part.
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*/
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movsd %xmm0,-24(%rsp)
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fldl -24(%rsp)
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frndint
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fstpl -8(%rsp)
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/*
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* Restore control word.
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*/
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fldcw -12(%rsp)
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/*
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* Store integral part.
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*/
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movsd -8(%rsp),%xmm0
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movsd %xmm0,(%rdi)
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/*
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* Get fractional part and return it.
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*/
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fldl -24(%rsp)
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fsubl -8(%rsp)
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fstpl -8(%rsp)
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movsd -8(%rsp),%xmm0
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ret
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END(modf)
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