fpa11.inl 1.6 KB

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  1. /*
  2. NetWinder Floating Point Emulator
  3. (c) Rebel.COM, 1998,1999
  4. Direct questions, comments to Scott Bambrough <scottb@netwinder.org>
  5. This program is free software; you can redistribute it and/or modify
  6. it under the terms of the GNU General Public License as published by
  7. the Free Software Foundation; either version 2 of the License, or
  8. (at your option) any later version.
  9. This program is distributed in the hope that it will be useful,
  10. but WITHOUT ANY WARRANTY; without even the implied warranty of
  11. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12. GNU General Public License for more details.
  13. You should have received a copy of the GNU General Public License
  14. along with this program; if not, write to the Free Software
  15. Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  16. */
  17. #include "fpa11.h"
  18. /* Read and write floating point status register */
  19. extern __inline__ unsigned int readFPSR(void)
  20. {
  21. FPA11 *fpa11 = GET_FPA11();
  22. return (fpa11->fpsr);
  23. }
  24. extern __inline__ void writeFPSR(FPSR reg)
  25. {
  26. FPA11 *fpa11 = GET_FPA11();
  27. /* the sysid byte in the status register is readonly */
  28. fpa11->fpsr = (fpa11->fpsr & MASK_SYSID) | (reg & ~MASK_SYSID);
  29. }
  30. /* Read and write floating point control register */
  31. extern __inline__ FPCR readFPCR(void)
  32. {
  33. FPA11 *fpa11 = GET_FPA11();
  34. /* clear SB, AB and DA bits before returning FPCR */
  35. return (fpa11->fpcr & ~MASK_RFC);
  36. }
  37. extern __inline__ void writeFPCR(FPCR reg)
  38. {
  39. FPA11 *fpa11 = GET_FPA11();
  40. fpa11->fpcr &= ~MASK_WFC; /* clear SB, AB and DA bits */
  41. fpa11->fpcr |= (reg & MASK_WFC); /* write SB, AB and DA bits */
  42. }