cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

fpa11.inl (1581B)

      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}