diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/powerpc/fpu/fedisblxcpt.c | 50 | ||||
| -rw-r--r-- | sysdeps/powerpc/fpu/feenablxcpt.c | 55 | ||||
| -rw-r--r-- | sysdeps/powerpc/fpu/fegetexcept.c | 43 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/fe_nomask.c | 51 |
5 files changed, 206 insertions, 0 deletions
@@ -1,3 +1,10 @@ +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 diff --git a/sysdeps/powerpc/fpu/fedisblxcpt.c b/sysdeps/powerpc/fpu/fedisblxcpt.c new file mode 100644 index 0000000..271fc08 --- /dev/null +++ b/sysdeps/powerpc/fpu/fedisblxcpt.c @@ -0,0 +1,50 @@ +/* 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; +} diff --git a/sysdeps/powerpc/fpu/feenablxcpt.c b/sysdeps/powerpc/fpu/feenablxcpt.c new file mode 100644 index 0000000..1d426e8 --- /dev/null +++ b/sysdeps/powerpc/fpu/feenablxcpt.c @@ -0,0 +1,55 @@ +/* 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; +} diff --git a/sysdeps/powerpc/fpu/fegetexcept.c b/sysdeps/powerpc/fpu/fegetexcept.c new file mode 100644 index 0000000..13699b5 --- /dev/null +++ b/sysdeps/powerpc/fpu/fegetexcept.c @@ -0,0 +1,43 @@ +/* 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; +} diff --git a/sysdeps/unix/sysv/linux/powerpc/fe_nomask.c b/sysdeps/unix/sysv/linux/powerpc/fe_nomask.c new file mode 100644 index 0000000..ceed245 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/fe_nomask.c @@ -0,0 +1,51 @@ +/* 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; +} |