diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32')
6 files changed, 193 insertions, 3 deletions
diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c new file mode 100644 index 0000000000..9005119f78 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c @@ -0,0 +1,50 @@ +/* Clear floating-point exceptions for atomic compound assignment. + e500 version. + Copyright (C) 2004-2013 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 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_libc.h> +#include <stdlib.h> +#include <sysdep.h> +#include <sys/prctl.h> + +void +__atomic_feclearexcept (void) +{ + unsigned int fpescr, old_fpescr; + + /* Get the current state. */ + old_fpescr = fpescr = fegetenv_register (); + + /* Clear the relevant bits. */ + fpescr &= ~SPEFSCR_ALL_EXCEPT; + + /* Put the new state in effect. */ + fesetenv_register (fpescr); + + /* Let the kernel know if the "invalid" or "underflow" bit was + cleared. */ + if (old_fpescr & (SPEFSCR_FINVS | SPEFSCR_FUNFS)) + { + int pflags __attribute__ ((__unused__)), r; + INTERNAL_SYSCALL_DECL (err); + + r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &pflags); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + abort (); + } +} diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c new file mode 100644 index 0000000000..afd225e2cf --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c @@ -0,0 +1,55 @@ +/* Store current floating-point environment and clear exceptions for + atomic compound assignment. e500 version. + Copyright (C) 2004-2013 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 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_libc.h> +#include <stdlib.h> +#include <sysdep.h> +#include <sys/prctl.h> + +void +__atomic_feholdexcept (fenv_t *envp) +{ + fenv_union_t u; + INTERNAL_SYSCALL_DECL (err); + int r; + + /* Get the current state. */ + r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &u.l[0]); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + abort (); + + u.l[1] = fegetenv_register (); + *envp = u.fenv; + + /* Clear everything except for the rounding mode and trapping to the + kernel. */ + u.l[0] &= ~(PR_FP_EXC_DIV + | PR_FP_EXC_OVF + | PR_FP_EXC_UND + | PR_FP_EXC_RES + | PR_FP_EXC_INV); + u.l[1] &= SPEFSCR_FRMC | (SPEFSCR_ALL_EXCEPT_ENABLE & ~SPEFSCR_FINXE); + + /* Put the new state in effect. */ + fesetenv_register (u.l[1]); + r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, + u.l[0] | PR_FP_EXC_SW_ENABLE); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + abort (); +} diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c new file mode 100644 index 0000000000..9ae6b45087 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feupdateenv.c @@ -0,0 +1,46 @@ +/* Install given floating-point environment and raise exceptions for + atomic compound assignment. e500 version. + Copyright (C) 2004-2013 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 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_libc.h> +#include <stdlib.h> +#include <sysdep.h> +#include <sys/prctl.h> + +void +__atomic_feupdateenv (const fenv_t *envp) +{ + int exc; + fenv_union_t u; + INTERNAL_SYSCALL_DECL (err); + int r; + + /* Save the currently set exceptions. */ + exc = fegetenv_register () & SPEFSCR_ALL_EXCEPT; + + u.fenv = *envp; + + fesetenv_register (u.l[1]); + r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, + u.l[0] | PR_FP_EXC_SW_ENABLE); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + abort (); + + /* Raise (if appropriate) saved exceptions. */ + __feraiseexcept_soft (exc); +} diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h b/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h index e905edadef..a69d061982 100644 --- a/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/fenv_libc.h @@ -27,6 +27,9 @@ int __feraiseexcept_spe (int); libm_hidden_proto (__feraiseexcept_spe) +int __feraiseexcept_soft (int); +libc_hidden_proto (__feraiseexcept_soft) + int __fexcepts_to_spe (int); libm_hidden_proto (__fexcepts_to_spe) diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/flt-rounds.c b/sysdeps/powerpc/powerpc32/e500/nofpu/flt-rounds.c new file mode 100644 index 0000000000..49e6eeb614 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/flt-rounds.c @@ -0,0 +1,39 @@ +/* Return current rounding mode as correct value for FLT_ROUNDS. e500 + version. + Copyright (C) 2013 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 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_libc.h> +#include <stdlib.h> + +int +__flt_rounds (void) +{ + switch (fegetenv_register () & SPEFSCR_FRMC) + { + case FE_TOWARDZERO: + return 0; + case FE_TONEAREST: + return 1; + case FE_UPWARD: + return 2; + case FE_DOWNWARD: + return 3; + default: + abort (); + } +} diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/fraiseexcept-soft.c b/sysdeps/powerpc/powerpc32/e500/nofpu/fraiseexcept-soft.c index 0aed72ff3c..22b2bdadbf 100644 --- a/sysdeps/powerpc/powerpc32/e500/nofpu/fraiseexcept-soft.c +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/fraiseexcept-soft.c @@ -20,9 +20,6 @@ #include <fenv_libc.h> #include <libc-symbols.h> -int __feraiseexcept_soft (int); -libc_hidden_proto (__feraiseexcept_soft) - #define __FERAISEEXCEPT_INTERNAL __feraiseexcept_soft #include "spe-raise.c" libc_hidden_def (__feraiseexcept_soft) |