From 849369d6c66d3054688672f97d31fceb8e8230fb Mon Sep 17 00:00:00 2001 From: root Date: Fri, 25 Dec 2015 04:40:36 +0000 Subject: initial_commit --- arch/arm/nwfpe/fpa11.inl | 51 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 arch/arm/nwfpe/fpa11.inl (limited to 'arch/arm/nwfpe/fpa11.inl') diff --git a/arch/arm/nwfpe/fpa11.inl b/arch/arm/nwfpe/fpa11.inl new file mode 100644 index 00000000..ab8d6826 --- /dev/null +++ b/arch/arm/nwfpe/fpa11.inl @@ -0,0 +1,51 @@ +/* + NetWinder Floating Point Emulator + (c) Rebel.COM, 1998,1999 + + Direct questions, comments to Scott Bambrough + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "fpa11.h" + +/* Read and write floating point status register */ +static inline unsigned int readFPSR(void) +{ + FPA11 *fpa11 = GET_FPA11(); + return (fpa11->fpsr); +} + +static inline void writeFPSR(FPSR reg) +{ + FPA11 *fpa11 = GET_FPA11(); + /* the sysid byte in the status register is readonly */ + fpa11->fpsr = (fpa11->fpsr & MASK_SYSID) | (reg & ~MASK_SYSID); +} + +/* Read and write floating point control register */ +static inline FPCR readFPCR(void) +{ + FPA11 *fpa11 = GET_FPA11(); + /* clear SB, AB and DA bits before returning FPCR */ + return (fpa11->fpcr & ~MASK_RFC); +} + +static inline void writeFPCR(FPCR reg) +{ + FPA11 *fpa11 = GET_FPA11(); + fpa11->fpcr &= ~MASK_WFC; /* clear SB, AB and DA bits */ + fpa11->fpcr |= (reg & MASK_WFC); /* write SB, AB and DA bits */ +} -- cgit v1.2.3