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 #ifndef _MACHINE_FPU_INCLUDED /* allows multiple inclusion */
  10 #define _MACHINE_FPU_INCLUDED
  11
  12 #define PA83_FPU_FLAG    0x00000001
  13 #define PA89_FPU_FLAG    0x00000002
  14 #define PA2_0_FPU_FLAG   0x00000010
  15
  16 #define TIMEX_EXTEN_FLAG 0x00000004
  17
  18 #define ROLEX_EXTEN_FLAG 0x00000008
  19 #define COPR_FP         0x00000080      /* Floating point -- Coprocessor 0 */
  20 #define SFU_MPY_DIVIDE  0x00008000      /* Multiply/Divide __ SFU 0 */
  21
  22 #define EM_FPU_TYPE_OFFSET 272
  23
  24 /* version of EMULATION software for COPR,0,0 instruction */
  25 #define EMULATION_VERSION 4
  26
  27 /*
  28  * The only way to differentiate between TIMEX and ROLEX (or PCX-S and PCX-T)
  29  * is through the potential type field from the PDC_MODEL call.
  30  * The following flags are used to assist this differentiation.
  31  */
  32
  33 #define ROLEX_POTENTIAL_KEY_FLAGS       PDC_MODEL_CPU_KEY_WORD_TO_IO
  34 #define TIMEX_POTENTIAL_KEY_FLAGS       (PDC_MODEL_CPU_KEY_QUAD_STORE | \
  35                                          PDC_MODEL_CPU_KEY_RECIP_SQRT)
  36
  37 #endif /* ! _MACHINE_FPU_INCLUDED */