sim/testsuite/pru/mul.s

   1 # Check that multiplication works.
   2 # mach: pru
   3
   4 # Copyright (C) 2016-2021 Free Software Foundation, Inc.
   5 # Contributed by Dimitar Dimitrov <dimitar@dinux.eu>
   6 #
   7 # This file is part of the GNU simulators.
   8 #
   9 # This program is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 3 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # This program is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 .include "testutils.inc"
  23
  24         start
  25
  26         # MUL: Test regular case
  27         ldi r28, 1001
  28         ldi r29, 4567
  29         nop
  30         xin 0, r26, 4
  31         qbne32 2f, r26, 1001 * 4567
  32
  33         # MUL: Test the pipeline emulation
  34         ldi r28, 1002
  35         ldi r29, 1003
  36         ldi r29, 4004
  37         xin 0, r26, 4
  38         qbne32 2f, r26, 1002 * 1003
  39         xin 0, r26, 4
  40         qbne32 2f, r26, 1002 * 4004
  41
  42         # MUL: Test 64-bit result
  43         ldi32 r28, 0x12345678
  44         ldi32 r29, 0xaabbccdd
  45         nop
  46         xin 0, r26, 8
  47         qbne32 2f, r26, 0x45BE4598
  48         qbne32 2f, r27, 0xC241C38
  49
  50         # MAC: Test regular case
  51         ldi r25, 1
  52         xout 0, r25, 1
  53         ldi r25, 3
  54         xout 0, r25, 1
  55
  56         ldi r25, 1
  57         ldi r28, 1001
  58         ldi r29, 2002
  59         xout 0, r25, 1
  60         ldi r28, 3003
  61         ldi r29, 4004
  62         xout 0, r25, 1
  63
  64         xin 0, r26, 4
  65         qbne32 2f, r26, (1001 * 2002) + (3003 * 4004)
  66
  67         # MAC: Test 64-bit result
  68         ldi r25, 3
  69         xout 0, r25, 1
  70
  71         ldi r25, 1
  72         ldi32 r28, 0x10203040
  73         ldi32 r29, 0x50607080
  74         xout 0, r25, 1
  75         ldi32 r28, 0xa0b0c0d0
  76         ldi32 r29, 0x11223344
  77         xout 0, r25, 1
  78
  79         xin 0, r26, 8
  80         qbne32 2f, r26, 0x8E30C740
  81         qbne32 2f, r27, 0xFD156B1
  82
  83         jmp 1f
  84
  85         fail
  86
  87 1:
  88         pass
  89 2:      fail