contrib/gcc-5.0/libgcc/config/nios2/sfp-machine.h

   1 /* Soft-FP definitions for Altera Nios II.
   2    Copyright (C) 2013-2015 Free Software Foundation, Inc.
   3
   4 This file is free software; you can redistribute it and/or modify it
   5 under the terms of the GNU General Public License as published by the
   6 Free Software Foundation; either version 3, or (at your option) any
   7 later version.
   8
   9 This file is distributed in the hope that it will be useful, but
  10 WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12 General Public License for more details.
  13
  14 Under Section 7 of GPL version 3, you are granted additional
  15 permissions described in the GCC Runtime Library Exception, version
  16 3.1, as published by the Free Software Foundation.
  17
  18 You should have received a copy of the GNU General Public License and
  19 a copy of the GCC Runtime Library Exception along with this program;
  20 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 #define _FP_W_TYPE_SIZE         32
  24 #define _FP_W_TYPE              unsigned long
  25 #define _FP_WS_TYPE             signed long
  26 #define _FP_I_TYPE              long
  27
  28 #define _FP_MUL_MEAT_S(R,X,Y)                           \
  29   _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm)
  30 #define _FP_MUL_MEAT_D(R,X,Y)                           \
  31   _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm)
  32 #define _FP_MUL_MEAT_Q(R,X,Y)                           \
  33   _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm)
  34
  35 #define _FP_DIV_MEAT_S(R,X,Y)   _FP_DIV_MEAT_1_loop(S,R,X,Y)
  36 #define _FP_DIV_MEAT_D(R,X,Y)   _FP_DIV_MEAT_2_udiv(D,R,X,Y)
  37 #define _FP_DIV_MEAT_Q(R,X,Y)   _FP_DIV_MEAT_4_udiv(Q,R,X,Y)
  38
  39 #define _FP_NANFRAC_S           ((_FP_QNANBIT_S << 1) - 1)
  40 #define _FP_NANFRAC_D           ((_FP_QNANBIT_D << 1) - 1), -1
  41 #define _FP_NANFRAC_Q           ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1
  42 #define _FP_NANSIGN_S           0
  43 #define _FP_NANSIGN_D           0
  44 #define _FP_NANSIGN_Q           0
  45
  46 #define _FP_KEEPNANFRACP 1
  47 #define _FP_QNANNEGATEDP 0
  48
  49 /* Someone please check this.  */
  50 #define _FP_CHOOSENAN(fs, wc, R, X, Y, OP)                      \
  51   do {                                                          \
  52     if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs)          \
  53         && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs))     \
  54       {                                                         \
  55         R##_s = Y##_s;                                          \
  56         _FP_FRAC_COPY_##wc(R,Y);                                \
  57       }                                                         \
  58     else                                                        \
  59       {                                                         \
  60         R##_s = X##_s;                                          \
  61         _FP_FRAC_COPY_##wc(R,X);                                \
  62       }                                                         \
  63     R##_c = FP_CLS_NAN;                                         \
  64   } while (0)
  65
  66 /* Not checked.  */
  67 #define _FP_TININESS_AFTER_ROUNDING 0
  68
  69 #define __LITTLE_ENDIAN 1234
  70 #define __BIG_ENDIAN    4321
  71
  72 #ifdef __nios2_little_endian__
  73 #define __BYTE_ORDER __LITTLE_ENDIAN
  74 #else
  75 #define __BYTE_ORDER __BIG_ENDIAN
  76 #endif
  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)));