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Linux/arch/parisc/math-emu/fpu.h

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  1 /*
  2  * Linux/PA-RISC Project (http://www.parisc-linux.org/)
  3  *
  4  * Floating-point emulation code
  5  *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.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, or (at your option)
 10  *    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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 20  */
 21 /*
 22  * BEGIN_DESC
 23  * 
 24  *  File: 
 25  *      @(#)    pa/fp/fpu.h             $Revision: 1.1 $
 26  * 
 27  *  Purpose:
 28  *      <<please update with a synopis of the functionality provided by this file>>
 29  * 
 30  * 
 31  * END_DESC  
 32 */
 33 
 34 #ifdef __NO_PA_HDRS
 35     PA header file -- do not include this header file for non-PA builds.
 36 #endif
 37 
 38 
 39 #ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */
 40 #define _MACHINE_FPU_INCLUDED
 41 
 42 #if 0
 43 #ifndef _SYS_STDSYMS_INCLUDED
 44 #    include <sys/stdsyms.h>
 45 #endif   /* _SYS_STDSYMS_INCLUDED  */
 46 #include  <machine/pdc/pdc_rqsts.h>
 47 #endif
 48 
 49 #define PA83_FPU_FLAG    0x00000001
 50 #define PA89_FPU_FLAG    0x00000002
 51 #define PA2_0_FPU_FLAG   0x00000010
 52 
 53 #define TIMEX_EXTEN_FLAG 0x00000004
 54 
 55 #define ROLEX_EXTEN_FLAG 0x00000008
 56 #define COPR_FP         0x00000080      /* Floating point -- Coprocessor 0 */
 57 #define SFU_MPY_DIVIDE  0x00008000      /* Multiply/Divide __ SFU 0 */
 58 
 59 
 60 #define EM_FPU_TYPE_OFFSET 272
 61 
 62 /* version of EMULATION software for COPR,0,0 instruction */
 63 #define EMULATION_VERSION 4
 64 
 65 /*
 66  * The only was to differeniate between TIMEX and ROLEX (or PCX-S and PCX-T)
 67  * is thorough the potential type field from the PDC_MODEL call.  The 
 68  * following flags are used at assist this differeniation.
 69  */
 70 
 71 #define ROLEX_POTENTIAL_KEY_FLAGS       PDC_MODEL_CPU_KEY_WORD_TO_IO
 72 #define TIMEX_POTENTIAL_KEY_FLAGS       (PDC_MODEL_CPU_KEY_QUAD_STORE | \
 73                                          PDC_MODEL_CPU_KEY_RECIP_SQRT)
 74 
 75 
 76 #endif /* ! _MACHINE_FPU_INCLUDED */
 77 

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