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kernel/linux-imx6_3.14.28/arch/parisc/math-emu/fpu.h 2.25 KB
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  /*
   * Linux/PA-RISC Project (http://www.parisc-linux.org/)
   *
   * Floating-point emulation code
   *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
   *
   *    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, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  /*
   * BEGIN_DESC
   * 
   *  File: 
   *      @(#)	pa/fp/fpu.h		$Revision: 1.1 $
   * 
   *  Purpose:
   *      <<please update with a synopis of the functionality provided by this file>>
   * 
   * 
   * END_DESC  
  */
  
  #ifdef __NO_PA_HDRS
      PA header file -- do not include this header file for non-PA builds.
  #endif
  
  
  #ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */
  #define _MACHINE_FPU_INCLUDED
  
  #if 0
  #ifndef _SYS_STDSYMS_INCLUDED
  #    include <sys/stdsyms.h>
  #endif   /* _SYS_STDSYMS_INCLUDED  */
  #include  <machine/pdc/pdc_rqsts.h>
  #endif
  
  #define PA83_FPU_FLAG    0x00000001
  #define PA89_FPU_FLAG    0x00000002
  #define PA2_0_FPU_FLAG   0x00000010
  
  #define TIMEX_EXTEN_FLAG 0x00000004
  
  #define ROLEX_EXTEN_FLAG 0x00000008
  #define COPR_FP 	0x00000080	/* Floating point -- Coprocessor 0 */
  #define SFU_MPY_DIVIDE	0x00008000	/* Multiply/Divide __ SFU 0 */
  
  
  #define EM_FPU_TYPE_OFFSET 272
  
  /* version of EMULATION software for COPR,0,0 instruction */
  #define EMULATION_VERSION 4
  
  /*
   * The only was to differeniate between TIMEX and ROLEX (or PCX-S and PCX-T)
   * is thorough the potential type field from the PDC_MODEL call.  The 
   * following flags are used at assist this differeniation.
   */
  
  #define ROLEX_POTENTIAL_KEY_FLAGS	PDC_MODEL_CPU_KEY_WORD_TO_IO
  #define TIMEX_POTENTIAL_KEY_FLAGS	(PDC_MODEL_CPU_KEY_QUAD_STORE | \
  					 PDC_MODEL_CPU_KEY_RECIP_SQRT)
  
  
  #endif /* ! _MACHINE_FPU_INCLUDED */