arch/parisc/math-emu/fpu.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Linux/PA-RISC Project (http://www.parisc-linux.org/)
   4  *
   5  * Floating-point emulation code
   6  *  Copyright (C) 2001 Hewlett-Packard (Paul Bame) <bame@debian.org>
   7  */
   8 /*
   9  * BEGIN_DESC
  10  *
  11  *  File:
  12  *      @(#)    pa/fp/fpu.h             $Revision: 1.1 $
  13  *
  14  *  Purpose:
  15  *      <<please update with a synopis of the functionality provided by this file>>
  16  *
  17  *
  18  * END_DESC
  19 */
  20
  21 #ifdef __NO_PA_HDRS
  22     PA header file -- do not include this header file for non-PA builds.
  23 #endif
  24
  25
  26 #ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */
  27 #define _MACHINE_FPU_INCLUDED
  28
  29 #if 0
  30 #ifndef _SYS_STDSYMS_INCLUDED
  31 #    include <sys/stdsyms.h>
  32 #endif   /* _SYS_STDSYMS_INCLUDED  */
  33 #include  <machine/pdc/pdc_rqsts.h>
  34 #endif
  35
  36 #define PA83_FPU_FLAG    0x00000001
  37 #define PA89_FPU_FLAG    0x00000002
  38 #define PA2_0_FPU_FLAG   0x00000010
  39
  40 #define TIMEX_EXTEN_FLAG 0x00000004
  41
  42 #define ROLEX_EXTEN_FLAG 0x00000008
  43 #define COPR_FP         0x00000080      /* Floating point -- Coprocessor 0 */
  44 #define SFU_MPY_DIVIDE  0x00008000      /* Multiply/Divide __ SFU 0 */
  45
  46
  47 #define EM_FPU_TYPE_OFFSET 272
  48
  49 /* version of EMULATION software for COPR,0,0 instruction */
  50 #define EMULATION_VERSION 4
  51
  52 /*
  53  * The only was to differeniate between TIMEX and ROLEX (or PCX-S and PCX-T)
  54  * is thorough the potential type field from the PDC_MODEL call.  The
  55  * following flags are used at assist this differeniation.
  56  */
  57
  58 #define ROLEX_POTENTIAL_KEY_FLAGS       PDC_MODEL_CPU_KEY_WORD_TO_IO
  59 #define TIMEX_POTENTIAL_KEY_FLAGS       (PDC_MODEL_CPU_KEY_QUAD_STORE | \
  60                                          PDC_MODEL_CPU_KEY_RECIP_SQRT)
  61
  62
  63 #endif /* ! _MACHINE_FPU_INCLUDED */