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Implement missing fpgetround() and fpsetround().

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This commit is contained in:
Marcel Moolenaar 2003-01-11 07:24:54 +00:00
parent fe41c67cfc
commit 42cf585a69
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=109096
3 changed files with 84 additions and 2 deletions
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4
lib/libc/ia64/gen/Makefile.inc
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@ -2,8 +2,8 @@
SRCS+= __divdf3.S __divdi3.S __divsf3.S __divsi3.S __moddi3.S __modsi3.S \
__udivdi3.S __udivsi3.S __umoddi3.S __umodsi3.S _setjmp.S fabs.S \
fpgetmask.c fpsetmask.c frexp.c infinity.c isinf.c ldexp.c modf.c \
setjmp.S sigsetjmp.S
fpgetmask.c fpgetround.c fpsetmask.c fpsetround.c frexp.c infinity.c \
isinf.c ldexp.c modf.c setjmp.S sigsetjmp.S
# The following may go away if function _Unwind_FindTableEntry()
# will be part of GCC.

39
lib/libc/ia64/gen/fpgetround.c Normal file
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@ -0,0 +1,39 @@
/*
* Copyright (c) 2003 Marcel Moolenaar
* 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 ``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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <ieeefp.h>
fp_rnd_t
fpgetround(void)
{
uint64_t fpsr;
__asm __volatile("mov %0=ar.fpsr" : "=r"(fpsr));
return ((fp_rnd_t)((fpsr >> 10) & 3));
}

43
lib/libc/ia64/gen/fpsetround.c Normal file
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@ -0,0 +1,43 @@
/*
* Copyright (c) 2003 Marcel Moolenaar
* 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 ``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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <ieeefp.h>
fp_rnd_t
fpsetround(fp_rnd_t rnd)
{
uint64_t fpsr;
fp_rnd_t prev;
__asm __volatile("mov %0=ar.fpsr" : "=r"(fpsr));
prev = (fp_rnd_t)((fpsr >> 10) & 3);
fpsr = (fpsr & ~0xC00ULL) | ((unsigned int)rnd << 10);
__asm __volatile("mov ar.fpsr=%0" :: "r"(fpsr));
return (prev);
}