gdb/testsuite/gdb.base/arithmet.exp

   1 # Copyright 1998, 1999, 2001, 2007, 2008, 2009, 2010, 2011
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 # This file was written by Elena Zannoni (ezannoni@cygnus.com)
  18 # Rewritten to use gdb_test by Michael Chastain (chastain@redhat.com)
  19
  20 # This file is part of the gdb testsuite
  21 #
  22 # tests for correctness of arithmetic operators, associativity and precedence
  23 # with integer type variables
  24 #
  25
  26 if $tracelevel then {
  27         strace $tracelevel
  28         }
  29
  30 #
  31 # test running programs
  32 #
  33
  34 set testfile "int-type"
  35 set srcfile ${testfile}.c
  36 set binfile ${objdir}/${subdir}/${testfile}
  37
  38 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {
  39      untested arithmet.exp
  40      return -1
  41     }
  42
  43 gdb_exit
  44 gdb_start
  45 gdb_reinitialize_dir $srcdir/$subdir
  46 gdb_load ${binfile}
  47
  48
  49 #
  50 # set it up at a breakpoint so we can play with the variable values
  51 #
  52
  53 if ![runto_main] then {
  54     perror "couldn't run to breakpoint"
  55     continue
  56 }
  57
  58 #
  59 # test expressions with "int" types
  60 #
  61
  62 gdb_test_no_output "set variable x=14"
  63 gdb_test_no_output "set variable y=2"
  64 gdb_test_no_output "set variable z=2"
  65 gdb_test_no_output "set variable w=3"
  66
  67 gdb_test "print x" "14"
  68 gdb_test "print y"  "2"
  69 gdb_test "print z"  "2"
  70 gdb_test "print w"  "3"
  71
  72 gdb_test "print x+y" "16"
  73 gdb_test "print x-y" "12"
  74 gdb_test "print x*y" "28"
  75 gdb_test "print x/y"  "7"
  76 gdb_test "print x%y"  "0"
  77
  78 #  x  y  z  w
  79 # 14  2  2  3
  80
  81 # Test associativity of +, -, *, % ,/
  82
  83 gdb_test "print x+y+z" "18"
  84 gdb_test "print x-y-z" "10"
  85 gdb_test "print x*y*z" "56"
  86 gdb_test "print x/y/z"  "3"
  87 gdb_test "print x%y%z"  "0"
  88
  89 # test precedence rules on pairs of arithmetic operators
  90
  91 gdb_test_no_output "set variable x=10"
  92 gdb_test_no_output "set variable y=4"
  93
  94 #  x  y  z  w
  95 # 10  4  2  3
  96
  97 gdb_test "print x+y-z" "12"
  98 gdb_test "print x+y*z" "18"
  99 gdb_test "print x+y%w" "11"
 100 gdb_test "print x+y/w" "11"
 101 gdb_test "print x-y*z"  "2"
 102 gdb_test "print x-y%z" "10"
 103 gdb_test "print x-y/z"  "8"
 104 gdb_test "print x*y/z" "20"
 105 gdb_test "print x*y%w"  "1"
 106 gdb_test "print x/y%w"  "2"
 107
 108 # test use of parentheses to enforce different order of evaluation
 109
 110 gdb_test "print x-(y+w)"  "3"
 111 gdb_test "print x/(y*w)"  "0"
 112 gdb_test "print x-(y/w)"  "9"
 113 gdb_test "print (x+y)*w" "42"