592f26a3ed
2003-12-17 Carlos O'Donell <carlos@baldric.uwo.ca> * sysdeps/hppa/fpu/fclrexcpt.c (feclearexcept): Right shift FE_ALL_EXCEPT before complimenting. * sysdeps/hppa/fpu/fegetenv.c (fegetenv): Use asm 'ma,' completer, and gcc '+r' constraint. * sysdeps/hppa/fpu/feholdexcpt.c (feholdexcept): Likewise. * sysdeps/hppa/fpu/fesetenv.c (fesetenv): Likewise. * sysdeps/hppa/fpu/feupdateenv.c (feupdateenv): Read raised exception bits, OR with envp, pass to fesetenv. * sysdeps/hppa/fpu/fraiseexcpt.c (feraiseexcept): Add delayed exception flushing, FE_UNDERFLOW is DBL_MIN/3.0, FE_INEXACT is triggered by M_PI/69.69 converted to single precision. * sysdeps/hppa/fpu/fsetexcptflg.c (fesetexceptflag): Set enable bits not raised exception bits. * sysdeps/hppa/Makefile: Add dl-symaddr and dl-fptr to the correct build strings. * sysdeps/hppa/dl-fptr.h: New file. * sysdeps/hppa/dl-fptr.c: Removed. * sysdeps/hppa/dl-symaddr.c (_dl_symbol_address): Use _dl_make_ftpr, remove const qualifier for map. (_dl_function_address): Removed. * sysdeps/hppa/dl-lookupcfg.h: DL_LOOKUP_ADDRESS must clear PLABEL32 bits, define DL_AUTO_FUNCTION_ADDRESS and DL_STATIC_FUNCTION_ADDRESS, DL_DT_INIT_ADDRESS and DL_DT_FINI_ADDRESS use the previous two macros. * misc/mntent_r.c: Change encoding to match recently changed decoder.
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* Store current floating-point environment and clear exceptions.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by David Huggins-Daines <dhd@debian.org>, 2000
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <fenv.h>
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#include <string.h>
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int
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feholdexcept (fenv_t *envp)
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{
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fenv_t clear;
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fenv_t * _regs = envp;
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/* Store the environment. */
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__asm__ (
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"fstd,ma %%fr0,8(%1)\n"
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"fstd,ma %%fr1,8(%1)\n"
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"fstd,ma %%fr2,8(%1)\n"
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"fstd %%fr3,0(%1)\n"
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: "=m" (*_regs), "+r" (_regs));
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memcpy (&clear, envp, sizeof (clear));
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/* Now clear all exceptions. */
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clear.__status_word &= ~(FE_ALL_EXCEPT << 27);
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memset (clear.__exception, 0, sizeof (clear.__exception));
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/* And set all exceptions to non-stop. */
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clear.__status_word &= ~FE_ALL_EXCEPT;
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/* Load the new environment. */
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_regs = &clear;
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__asm__ (
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"fldd,ma -8(%1),%%fr3\n"
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"fldd,ma -8(%1),%%fr2\n"
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"fldd,ma -8(%1),%%fr1\n"
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"fldd 0(%1),%%fr0\n"
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: "=m" (*_regs), "+r" (_regs));
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return 0;
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}
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