diff options
Diffstat (limited to 'sysdeps/mach/alpha/setfpucw.c')
-rw-r--r-- | sysdeps/mach/alpha/setfpucw.c | 69 |
1 files changed, 0 insertions, 69 deletions
diff --git a/sysdeps/mach/alpha/setfpucw.c b/sysdeps/mach/alpha/setfpucw.c deleted file mode 100644 index a2887c8dfb..0000000000 --- a/sysdeps/mach/alpha/setfpucw.c +++ /dev/null @@ -1,69 +0,0 @@ -/* Set FP exception mask and rounding mode. Mach/Alpha version. - Copyright (C) 2002 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, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -#include <fpu_control.h> - - -#define FPCR_DYN_SHIFT 58 /* first dynamic rounding mode bit */ -#define FPCR_DYN_CHOPPED (0x0UL << FPCR_DYN_SHIFT) /* towards 0 */ -#define FPCR_DYN_MINUS (0x1UL << FPCR_DYN_SHIFT) /* towards -INF */ -#define FPCR_DYN_NORMAL (0x2UL << FPCR_DYN_SHIFT) /* towards nearest */ -#define FPCR_DYN_PLUS (0x3UL << FPCR_DYN_SHIFT) /* towards +INF */ -#define FPCR_DYN_MASK (0x3UL << FPCR_DYN_SHIFT) - -static inline unsigned long -rdfpcr (void) -{ - unsigned long fpcr; - asm ("excb; mf_fpcr %0" : "=f"(fpcr)); - return fpcr; -} - -static inline void -wrfpcr (unsigned long fpcr) -{ - asm volatile ("mt_fpcr %0; excb" : : "f"(fpcr)); -} - - -void -__setfpucw (fpu_control_t fpu_control) -{ - unsigned long fpcr; - - if (!fpu_control) - fpu_control = _FPU_DEFAULT; - - /* first, set dynamic rounding mode: */ - - fpcr = rdfpcr(); - fpcr &= ~FPCR_DYN_MASK; - switch (fpu_control & 0xc00) - { - case _FPU_RC_NEAREST: fpcr |= FPCR_DYN_NORMAL; break; - case _FPU_RC_DOWN: fpcr |= FPCR_DYN_MINUS; break; - case _FPU_RC_UP: fpcr |= FPCR_DYN_PLUS; break; - case _FPU_RC_ZERO: fpcr |= FPCR_DYN_CHOPPED; break; - } - wrfpcr(fpcr); - - /* XXX trap bits? */ - - __fpu_control = fpu_control; /* update global copy */ -} |