LXR qemu/linux-user/arm/nwfpe/fpa11.inl

   1/*
   2    NetWinder Floating Point Emulator
   3    (c) Rebel.COM, 1998,1999
   4
   5    Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, see <http://www.gnu.org/licenses/>.
  19*/
  20
  21#include "fpa11.h"
  22
  23/* Read and write floating point status register */
  24static inline unsigned int readFPSR(void)
  25{
  26  FPA11 *fpa11 = GET_FPA11();
  27  return(fpa11->fpsr);
  28}
  29
  30static inline void writeFPSR(FPSR reg)
  31{
  32  FPA11 *fpa11 = GET_FPA11();
  33  /* the sysid byte in the status register is readonly */
  34  fpa11->fpsr = (fpa11->fpsr & MASK_SYSID) | (reg & ~MASK_SYSID);
  35}
  36
  37/* Read and write floating point control register */
  38static inline FPCR readFPCR(void)
  39{
  40  FPA11 *fpa11 = GET_FPA11();
  41  /* clear SB, AB and DA bits before returning FPCR */
  42  return(fpa11->fpcr & ~MASK_RFC);
  43}
  44
  45static inline void writeFPCR(FPCR reg)
  46{
  47  FPA11 *fpa11 = GET_FPA11();
  48  fpa11->fpcr &= ~MASK_WFC;             /* clear SB, AB and DA bits */
  49  fpa11->fpcr |= (reg & MASK_WFC);      /* write SB, AB and DA bits */
  50}
  51