sim/testsuite/sim/mips/utils-fpu.inc

   1 # MIPS simulator testsuite FPU utility functions.
   2 # Copyright (C) 2004-2013 Free Software Foundation, Inc.
   3 # Contributed by Chris Demetriou of Broadcom Corporation.
   4 #
   5 # This file is part of the GNU simulators.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20         .macro  enable_fpu fr
  21         mfc0    $20, $12
  22         or      $20, $20, (1 << 29) | (\fr << 26)
  23         mtc0    $20, $20
  24         .endm
  25
  26         ###
  27         ### Data movement macros
  28         ###
  29
  30         .macro ld_fp_df r, v
  31         .data
  32 1:      .double \v
  33         .previous
  34         ldc1    \r, 1b
  35         .endm
  36
  37         .macro ld_fp_di r, v
  38         .data
  39 1:      .dword  \v
  40         .previous
  41         ldc1    \r, 1b
  42         .endm
  43
  44         .macro ld_fp_sf r, v
  45         .data
  46 1:      .float  \v
  47         .previous
  48         lwc1    \r, 1b
  49         .endm
  50
  51         .macro ld_fp_si r, v
  52         .data
  53 1:      .word   \v
  54         .previous
  55         lwc1    \r, 1b
  56         .endm
  57
  58
  59         ###
  60         ### FP condition code manipulation macros
  61         ###
  62
  63         .macro clrset_fp_cc clr, set
  64         cfc1    $20, $31
  65         or      $20, $20, (((\clr & 0xfe) << 24) | ((\clr & 0x01) << 23))
  66         xor     $20, $20, (((\clr & 0xfe) << 24) | ((\clr & 0x01) << 23))
  67         or      $20, $20, (((\set & 0xfe) << 24) | ((\set & 0x01) << 23))
  68         ctc1    $20, $31
  69         .endm
  70
  71         .macro clr_fp_cc clr
  72         clrset_fp_cc \clr, 0
  73         .endm
  74
  75         .macro set_fp_cc set
  76         clrset_fp_cc 0, \set
  77         .endm
  78
  79         .macro get_fp_cc r
  80         .set push
  81         .set noat
  82         cfc1    $1, $31
  83         srl     $1, $1, 23
  84         andi    \r, $1, 0x1fc
  85         andi    $1, $1, 0x1
  86         srl     \r, \r, 1
  87         or      \r, \r, $1
  88         .set pop
  89         .endm
  90
  91         .macro ck_fp_cc v
  92         get_fp_cc $20
  93         xori    $20, $20, \v
  94         bnez    $20, _fail
  95          nop
  96         .endm
  97
  98         .macro ckm_fp_cc v, mask
  99         get_fp_cc $20
 100         xori    $20, $20, \v
 101         andi    $20, $20, \mask
 102         bnez    $20, _fail
 103          nop
 104         .endm