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 */ 24 static inline unsigned int readFPSR(void) 25 { 26 FPA11 *fpa11 = GET_FPA11(); 27 return(fpa11->fpsr); 28 } 29 30 static 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 */ 38 static 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 45 static 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 }