diff options
Diffstat (limited to 'REORG.TODO/sysdeps/powerpc/fpu/fraiseexcpt.c')
-rw-r--r-- | REORG.TODO/sysdeps/powerpc/fpu/fraiseexcpt.c | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/powerpc/fpu/fraiseexcpt.c b/REORG.TODO/sysdeps/powerpc/fpu/fraiseexcpt.c new file mode 100644 index 0000000000..05f5cb6309 --- /dev/null +++ b/REORG.TODO/sysdeps/powerpc/fpu/fraiseexcpt.c @@ -0,0 +1,68 @@ +/* Raise given exceptions. + Copyright (C) 1997-2017 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> + +#undef feraiseexcept +int +__feraiseexcept (int excepts) +{ + fenv_union_t u; + + /* Raise exceptions represented by EXCEPTS. It is the responsibility of + the OS to ensure that if multiple exceptions occur they are fed back + to this process in the proper way; this can happen in hardware, + anyway (in particular, inexact with overflow or underflow). */ + + /* Get the current state. */ + u.fenv = fegetenv_register (); + + /* Add the exceptions */ + u.l = (u.l + | (excepts & FPSCR_STICKY_BITS) + /* Turn FE_INVALID into FE_INVALID_SOFTWARE. */ + | (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT)) + & FE_INVALID_SOFTWARE)); + + /* Store the new status word (along with the rest of the environment), + triggering any appropriate exceptions. */ + fesetenv_register (u.fenv); + + if ((excepts & FE_INVALID)) + { + /* For some reason, some PowerPC chips (the 601, in particular) + don't have FE_INVALID_SOFTWARE implemented. Detect this + case and raise FE_INVALID_SNAN instead. */ + u.fenv = fegetenv_register (); + if ((u.l & FE_INVALID) == 0) + set_fpscr_bit (FPSCR_VXSNAN); + } + + /* Success. */ + return 0; +} + +#include <shlib-compat.h> +#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) +strong_alias (__feraiseexcept, __old_feraiseexcept) +compat_symbol (libm, __old_feraiseexcept, feraiseexcept, GLIBC_2_1); +#endif + +libm_hidden_def (__feraiseexcept) +libm_hidden_ver (__feraiseexcept, feraiseexcept) +versioned_symbol (libm, __feraiseexcept, feraiseexcept, GLIBC_2_2); |