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author | Joseph Myers <joseph@codesourcery.com> | 2016-09-07 16:46:47 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2016-09-07 16:46:47 +0000 |
commit | 9969e62e74cde7a78de10c220aeed200f8c93686 (patch) | |
tree | ce10a204cc4e92e4a3dbf26ffbdb30a14307e324 /sysdeps/powerpc/powerpc32/e500/nofpu | |
parent | 997290d9142877a3518422bde15d1ff52e8edf0a (diff) | |
download | glibc-9969e62e74cde7a78de10c220aeed200f8c93686.zip glibc-9969e62e74cde7a78de10c220aeed200f8c93686.tar.gz glibc-9969e62e74cde7a78de10c220aeed200f8c93686.tar.bz2 |
Add femode_t functions: powerpc.
This patch adds PowerPC versions of fegetmode and fesetmode.
* sysdeps/powerpc/fpu/fegetmode.c: New file.
* sysdeps/powerpc/fpu/fesetmode.c: Likewise.
* sysdeps/powerpc/nofpu/fegetmode.c: Likewise.
* sysdeps/powerpc/nofpu/fesetmode.c: Likewise.
* sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c: Likewise.
* sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c: Likewise.
Diffstat (limited to 'sysdeps/powerpc/powerpc32/e500/nofpu')
-rw-r--r-- | sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c | 37 | ||||
-rw-r--r-- | sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c | 43 |
2 files changed, 80 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c b/sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c new file mode 100644 index 0000000..b65df80 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c @@ -0,0 +1,37 @@ +/* Store current floating-point control modes. e500 version. + Copyright (C) 2016 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 <sysdep.h> +#include <sys/prctl.h> + +int +fegetmode (femode_t *modep) +{ + fenv_union_t u; + INTERNAL_SYSCALL_DECL (err); + int r; + + r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &u.l[0]); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + return -1; + + u.l[1] = fegetenv_register (); + *modep = u.fenv; + return 0; +} diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c b/sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c new file mode 100644 index 0000000..6c97316 --- /dev/null +++ b/sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c @@ -0,0 +1,43 @@ +/* Install given floating-point control modes. e500 version. + Copyright (C) 2016 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 <sysdep.h> +#include <sys/prctl.h> + +#define SPEFSCR_STATUS 0xff3eff00 + +int +fesetmode (const femode_t *modep) +{ + fenv_union_t u; + INTERNAL_SYSCALL_DECL (err); + int r; + + u.fenv = *modep; + unsigned int spefscr = fegetenv_register (); + spefscr = (spefscr & SPEFSCR_STATUS) | (u.l[1] & ~SPEFSCR_STATUS); + + fesetenv_register (spefscr); + r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, + u.l[0] | PR_FP_EXC_SW_ENABLE); + if (INTERNAL_SYSCALL_ERROR_P (r, err)) + return -1; + + return 0; +} |