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Add support fedisableexcept, feenableexcept, fegetexcept and feupdateenv 

for SH.
This commit is contained in:
Kaz Kojima 2012-04-05 11:43:30 +09:00
parent d653abb723
commit 15a946b57a
4 changed files with 151 additions and 0 deletions
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39
sysdeps/sh/sh4/fpu/fedisblxcpt.c Normal file
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/* Disable floating-point exceptions.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
int
fedisableexcept (int excepts)
{
unsigned int temp, old_exc;
/* Get the current control register contents. */
_FPU_GETCW (temp);
old_exc = (temp >> 5) & FE_ALL_EXCEPT;
excepts &= FE_ALL_EXCEPT;
temp &= ~(excepts << 5);
_FPU_SETCW (temp);
return old_exc;
}

38
sysdeps/sh/sh4/fpu/feenablxcpt.c Normal file
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/* Enable floating-point exceptions.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
int
feenableexcept (int excepts)
{
unsigned int temp, old_flag;
/* Get current exceptions. */
_FPU_GETCW (temp);
old_flag = (temp >> 5) & FE_ALL_EXCEPT;
excepts &= FE_ALL_EXCEPT;
temp |= excepts << 5;
_FPU_SETCW (temp);
return old_flag;
}

35
sysdeps/sh/sh4/fpu/fegetexcept.c Normal file
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/* Get enabled floating-point exceptions.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
int
fegetexcept (void)
{
unsigned int temp;
/* Get current exceptions. */
_FPU_GETCW (temp);
/* When read fpscr, this was initialized.
We need to rewrite value of temp. */
_FPU_SETCW (temp);
return (temp >> 5) & FE_ALL_EXCEPT;
}

39
sysdeps/sh/sh4/fpu/feupdateenv.c Normal file
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/* Install given floating-point environment and raise exceptions.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fpu_control.h>
int
feupdateenv (const fenv_t *envp)
{
unsigned int temp;
_FPU_GETCW (temp);
temp = (temp & FE_ALL_EXCEPT);
/* Raise the saved exception. Incidently for us the implementation
defined format of the values in objects of type fexcept_t is the
same as the ones specified using the FE_* constants. */
fesetenv (envp);
feraiseexcept ((int) temp);
return 0;
}
libm_hidden_def (feupdateenv)