cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fpa11.inl (1625B)

      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, write to the Free Software
     19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
     20*/
     21
     22#include "fpa11.h"
     23
     24/* Read and write floating point status register */
     25static inline unsigned int readFPSR(void)
     26{
     27	FPA11 *fpa11 = GET_FPA11();
     28	return (fpa11->fpsr);
     29}
     30
     31static inline void writeFPSR(FPSR reg)
     32{
     33	FPA11 *fpa11 = GET_FPA11();
     34	/* the sysid byte in the status register is readonly */
     35	fpa11->fpsr = (fpa11->fpsr & MASK_SYSID) | (reg & ~MASK_SYSID);
     36}
     37
     38/* Read and write floating point control register */
     39static inline FPCR readFPCR(void)
     40{
     41	FPA11 *fpa11 = GET_FPA11();
     42	/* clear SB, AB and DA bits before returning FPCR */
     43	return (fpa11->fpcr & ~MASK_RFC);
     44}
     45
     46static inline void writeFPCR(FPCR reg)
     47{
     48	FPA11 *fpa11 = GET_FPA11();
     49	fpa11->fpcr &= ~MASK_WFC;		/* clear SB, AB and DA bits */
     50	fpa11->fpcr |= (reg & MASK_WFC);	/* write SB, AB and DA bits */
     51}