libgcc/config/cris/sfp-machine.h

   1 /* Soft-FP definitions for CRIS.
   2    Copyright (C) 2013-2018 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 Under Section 7 of GPL version 3, you are granted additional
  17 permissions described in the GCC Runtime Library Exception, version
  18 3.1, as published by the Free Software Foundation.
  19
  20 You should have received a copy of the GNU General Public License and
  21 a copy of the GCC Runtime Library Exception along with this program;
  22 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23 <http://www.gnu.org/licenses/>.  */
  24
  25 #define _FP_W_TYPE_SIZE         32
  26 #define _FP_W_TYPE              unsigned long
  27 #define _FP_WS_TYPE             signed long
  28 #define _FP_I_TYPE              long
  29
  30 /* The type of the result of a floating point comparison.  This must
  31    match `__libgcc_cmp_return__' in GCC for the target.  */
  32 typedef int __gcc_CMPtype __attribute__ ((mode (__libgcc_cmp_return__)));
  33 #define CMPtype __gcc_CMPtype
  34
  35 /* FIXME: none of the *MEAT* macros have actually been benchmarked to be
  36    better than any other choice for any CRIS variant.  */
  37
  38 #define _FP_MUL_MEAT_S(R,X,Y)                           \
  39   _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
  40 #define _FP_MUL_MEAT_D(R,X,Y)                           \
  41   _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
  42
  43 #define _FP_DIV_MEAT_S(R,X,Y)   _FP_DIV_MEAT_1_loop(S,R,X,Y)
  44 #define _FP_DIV_MEAT_D(R,X,Y)   _FP_DIV_MEAT_2_udiv(D,R,X,Y)
  45
  46 #define _FP_NANFRAC_S           ((_FP_QNANBIT_S << 1) - 1)
  47 #define _FP_NANFRAC_D           ((_FP_QNANBIT_D << 1) - 1), -1
  48 #define _FP_NANSIGN_S           0
  49 #define _FP_NANSIGN_D           0
  50 #define _FP_QNANNEGATEDP 0
  51 #define _FP_KEEPNANFRACP 1
  52
  53 /* Someone please check this.  */
  54 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
  55   do {                                                          \
  56     if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \
  57         && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \
  58       {                                                         \
  59         R##_s = Y##_s;                                          \
  60         _FP_FRAC_COPY_##wc(R,Y);                                \
  61       }                                                         \
  62     else                                                        \
  63       {                                                         \
  64         R##_s = X##_s;                                          \
  65         _FP_FRAC_COPY_##wc(R,X);                                \
  66       }                                                         \
  67     R##_c = FP_CLS_NAN;                                         \
  68   } while (0)
  69
  70 /* Not checked.  */
  71 #define _FP_TININESS_AFTER_ROUNDING 0
  72
  73 #define __LITTLE_ENDIAN 1234
  74 #define __BIG_ENDIAN    4321
  75
  76 # define __BYTE_ORDER __LITTLE_ENDIAN
  77
  78 /* Define ALIASNAME as a strong alias for NAME.  */
  79 # define strong_alias(name, aliasname) _strong_alias(name, aliasname)
  80 # define _strong_alias(name, aliasname) \
  81   extern __typeof (name) aliasname __attribute__ ((alias (#name)));