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* sysdeps/hppa/fpu/fclrexcpt.c (feclearexcept): Use union to align parameters. Specify memory clobbers. * sysdeps/hppa/fpu/fedisblxcpt.c (fedisableexcept): Likewise. * sysdeps/hppa/fpu/feenablxcpt.c (feenableexcept): Likewise. * sysdeps/hppa/fpu/fegetenv.c (fegetenv): Do not save exception register. Use memcpy to align buffer. * sysdeps/hppa/fpu/fegetexcept.c (fegetexcept): Store and reload fr0. Use union to align parameters. * sysdeps/hppa/fpu/fegetround.c (fegetround): Likewise. * sysdeps/hppa/fpu/feholdexcpt.c (feholdexcept): Do not save exception registers. Define libm_hidden_def. * sysdeps/hppa/fpu/fesetenv.c (fesetenv): Do not save exception registers. * sysdeps/hppa/fpu/fesetround.c (fesetround): Use union to align parameters, speficy memory clobbers. Define libm_hidde_def * sysdeps/hppa/fpu/feupdateenv.c (feupdateenv): Use union to align parameters. Use memcpy to align buffer. * sysdeps/hppa/fpu/fgetexcptflg.c (fegetexceptflag): Likewise. * sysdeps/hppa/fpu/fsetexcptflg.c (fesetexceptflag): Likewise. * sysdeps/hppa/fpu/ftestexcept.c (fetestexcept): Likewise. * sysdeps/hppa/fpu/libm-test-ulps: Update. * sysdeps/hppa/fpu/bits/fenv.h: Add ABI comments.
65 lines
2.3 KiB
C
65 lines
2.3 KiB
C
/* Install given floating-point environment.
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Copyright (C) 1997, 1999, 2000, 2002 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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Based on the m68k version by
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Andreas Schwab <schwab@suse.de>
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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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int
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fesetenv (const fenv_t *envp)
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{
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union { unsigned long long buf[4]; fenv_t env; } temp;
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unsigned long long *bufptr;
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/* Install the environment specified by ENVP. But there are a few
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values which we do not want to come from the saved environment.
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Therefore, we get the current environment and replace the values
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we want to use from the environment specified by the parameter. */
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bufptr = temp.buf;
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__asm__ (
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"fstd,ma %%fr0,8(%1)\n"
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: "=m" (temp), "+r" (bufptr) : : "%r0");
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temp.env.__status_word &= ~(FE_ALL_EXCEPT
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| (FE_ALL_EXCEPT << 27)
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| FE_DOWNWARD);
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if (envp == FE_DFL_ENV)
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;
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else if (envp == FE_NOMASK_ENV)
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temp.env.__status_word |= FE_ALL_EXCEPT;
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else
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temp.env.__status_word |= (envp->__status_word
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& (FE_ALL_EXCEPT
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| FE_DOWNWARD
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| (FE_ALL_EXCEPT << 27)));
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/* Load the new environment. We use bufptr again since the
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initial asm has modified the value of the register and here
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we take advantage of that to load in reverse order so fr0
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is loaded last and T-Bit is enabled. */
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__asm__ (
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"fldd,mb -8(%1),%%fr0\n"
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: "=m" (temp), "+r" (bufptr) : : "%r0" );
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/* Success. */
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return 0;
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}
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libm_hidden_def (fesetenv)
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