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Annotation of qemu/linux-user/arm/nwfpe/fpa11.inl, revision 1.1.1.1

1.1       root        1: /*
                      2:     NetWinder Floating Point Emulator
                      3:     (c) Rebel.COM, 1998,1999
                      4: 
                      5:     Direct questions, comments to Scott Bambrough <[email protected]>
                      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 */
                     25: static inline unsigned int readFPSR(void)
                     26: {
                     27:   FPA11 *fpa11 = GET_FPA11();
                     28:   return(fpa11->fpsr);
                     29: }
                     30: 
                     31: static 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 */
                     39: static 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: 
                     46: static 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: }

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