libgcc/config/epiphany/ieee-754/eqsf2.S

   1 /* Copyright (C) 2008-2021 Free Software Foundation, Inc.
   2    Contributed by Embecosm on behalf of Adapteva, 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 #include "../epiphany-asm.h"
  26
  27         /* Assumption: NaNs have all bits 10..30 and one of bit 0..9 set.  */
  28
  29         FSTAB (__eqsf2,T_INT)
  30         .global SYM(__eqsf2)
  31         .balign 4
  32         HIDDEN_FUNC(__eqsf2)
  33 SYM(__eqsf2):
  34         sub     TMP0,r0,r1
  35         beq     .Lno_bdiff
  36         orr     TMP0,r0,r1
  37         add     TMP0,TMP0,TMP0
  38         rts
  39 .Lno_bdiff:
  40 #ifndef FLOAT_FORMAT_MOTOROLA
  41         mov     TMP0,0xffff
  42         movt    TMP0,0x7f
  43         add     TMP0,TMP0,r0
  44 #else
  45         add     TMP0,r0,0x3ff
  46 #endif
  47         eor     TMP0,TMP0,r0
  48         lsr     TMP0,TMP0,31
  49         rts
  50         ENDFUNC(__eqsf2)