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