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* sysdeps/powerpc/fpu/fedisblxcpt.c: New file.

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* sysdeps/powerpc/fpu/feenablxcpt.c: New file. 
* sysdeps/powerpc/fpu/fegetexcept.c: New file. 
* sysdeps/unix/sysv/linux/powerpc/fe_nomask.c: New file.
2000-08-27  Geoff Keating  <geoffk@cygnus.com>

	* sysdeps/powerpc/fpu/fedisblxcpt.c: New file.
	* sysdeps/powerpc/fpu/feenablxcpt.c: New file.
	* sysdeps/powerpc/fpu/fegetexcept.c: New file.
	* sysdeps/unix/sysv/linux/powerpc/fe_nomask.c: New file.
This commit is contained in:
Geoff Keating 2000-08-28 05:59:48 +00:00
parent cf365734e5
commit e4df97b85c
5 changed files with 206 additions and 0 deletions
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7
ChangeLog
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2000-08-27 Geoff Keating <geoffk@cygnus.com>
* sysdeps/powerpc/fpu/fedisblxcpt.c: New file.
* sysdeps/powerpc/fpu/feenablxcpt.c: New file.
* sysdeps/powerpc/fpu/fegetexcept.c: New file.
* sysdeps/unix/sysv/linux/powerpc/fe_nomask.c: New file.
2000-08-27 Ulrich Drepper <drepper@redhat.com>
* locale/programs/ld-collate.c (insert_weights): Also update

50
sysdeps/powerpc/fpu/fedisblxcpt.c Normal file
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/* Disable floating-point exceptions.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Geoffrey Keating <geoffk@geoffk.org>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv_libc.h>
int
fedisableexcept (int excepts)
{
fenv_union_t fe;
int result;
result = fegetexcept ();
if ((excepts & FE_ALL_INVALID) == FE_ALL_INVALID)
excepts = (excepts | FE_INVALID) & ~ FE_ALL_INVALID;
fe.fenv = fegetenv_register ();
if (excepts & FE_INEXACT)
fe.l[1] &= ~(1 << (31 - FPSCR_XE));
if (excepts & FE_DIVBYZERO)
fe.l[1] &= ~(1 << (31 - FPSCR_ZE));
if (excepts & FE_UNDERFLOW)
fe.l[1] &= ~(1 << (31 - FPSCR_UE));
if (excepts & FE_OVERFLOW)
fe.l[1] &= ~(1 << (31 - FPSCR_OE));
if (excepts & FE_INVALID)
fe.l[1] &= ~(1 << (31 - FPSCR_VE));
fesetenv_register (fe.fenv);
if ((fegetexcept () & excepts) != 0)
result = -1;
return result;
}

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sysdeps/powerpc/fpu/feenablxcpt.c Normal file
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/* Enable floating-point exceptions.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Geoffrey Keating <geoffk@geoffk.org>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv_libc.h>
int
feenableexcept (int excepts)
{
fenv_union_t fe;
int result, new;
result = fegetexcept ();
if ((excepts & FE_ALL_INVALID) == FE_ALL_INVALID)
excepts = (excepts | FE_INVALID) & ~ FE_ALL_INVALID;
fe.fenv = fegetenv_register ();
if (excepts & FE_INEXACT)
fe.l[1] |= (1 << (31 - FPSCR_XE));
if (excepts & FE_DIVBYZERO)
fe.l[1] |= (1 << (31 - FPSCR_ZE));
if (excepts & FE_UNDERFLOW)
fe.l[1] |= (1 << (31 - FPSCR_UE));
if (excepts & FE_OVERFLOW)
fe.l[1] |= (1 << (31 - FPSCR_OE));
if (excepts & FE_INVALID)
fe.l[1] |= (1 << (31 - FPSCR_VE));
fesetenv_register (fe.fenv);
new = fegetexcept ();
if (new != 0 && result == 0)
(void)__fe_nomask_env (void);
if ((old & excepts) != excepts)
result = -1;
return result;
}

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sysdeps/powerpc/fpu/fegetexcept.c Normal file
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/* Get floating-point exceptions.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Geoffrey Keating <geoffk@geoffk.org>, 2000.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv_libc.h>
int
fegetexcept (void)
{
fenv_union_t fe;
int result = 0;
fe.fenv = fegetenv_register ();
if (fe.l[1] & (1 << (31 - FPSCR_XE)))
result |= FE_INEXACT;
if (fe.l[1] & (1 << (31 - FPSCR_ZE)))
result |= FE_DIVBYZERO;
if (fe.l[1] & (1 << (31 - FPSCR_UE)))
result |= FE_UNDERFLOW;
if (fe.l[1] & (1 << (31 - FPSCR_OE)))
result |= FE_OVERFLOW;
if (fe.l[1] & (1 << (31 - FPSCR_VE)))
result |= FE_INVALID;
return result;
}

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sysdeps/unix/sysv/linux/powerpc/fe_nomask.c Normal file
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/* Procedure definition for FE_NOMASK_ENV for Linux/ppc.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <fenv.h>
#include <errno.h>
#include <signal.h>
#include <unistd.h>
/* This is rather fiddly under Linux. We don't have direct access,
and there is no system call, but we can change the bits
in a signal handler's context... */
static struct sigaction oact;
static void
fe_nomask_handler (int signum, struct sigcontext *sc)
{
sc->regs->msr |= 0x900ul; /* FE0 | FE1 */
sigaction (SIGUSR1, &oact, NULL);
}
const fenv_t *
__fe_nomask_env(void)
{
struct sigaction act;
act.sa_handler = (sighandler_t) fe_nomask_handler;
sigemptyset (&act.sa_mask);
act.sa_flags = 0;
sigaction (SIGUSR1, &act, &oact);
raise (SIGUSR1);
return FE_ENABLED_ENV;
}