gdb/testsuite/gdb.base/randomize.exp

   1 # Copyright 2008-2016 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 standard_testfile
  17
  18 if {[prepare_for_testing $testfile.exp $testfile $srcfile debug]} {
  19     untested $testfile.exp
  20     return -1
  21 }
  22
  23 proc address_get { testname } {
  24     global gdb_prompt
  25
  26     if {![runto_main]} {
  27         return -1
  28     }
  29
  30     # Do not rely on printf; some test configurations don't work with stdio.
  31
  32     gdb_breakpoint [gdb_get_line_number "print p"]
  33     gdb_continue_to_breakpoint "$testname - address set"
  34
  35     gdb_test_multiple "print/x p" $testname {
  36         -re "\\$\[0-9\]+ = (0x\[0-9a-f\]*)\r?\n$gdb_prompt $" {
  37             pass $testname
  38             return $expect_out(1,string)
  39         }
  40     }
  41 }
  42
  43 set test "set disable-randomization off"
  44 gdb_test_multiple "${test}" "${test}" {
  45     -re "Disabling randomization .* unsupported .*$gdb_prompt $" {
  46         untested "Disabling randomization is not supported on this Linux GDB"
  47         return -1
  48     }
  49     -re "No symbol .* in current context.*$gdb_prompt $" {
  50         untested "Disabling randomization is not supported on this GDB platform"
  51         return -1
  52     }
  53     -re "$gdb_prompt $" {
  54         pass $test
  55     }
  56 }
  57 gdb_test "show disable-randomization"         \
  58          "Disabling randomization .* is off." \
  59          "show disable-randomization off"
  60
  61 set addr1 [address_get "randomized first address"]
  62 set addr2 [address_get "randomized second address"]
  63 set test "randomized addresses should not match"
  64 if [string equal $addr1 $addr2] {
  65     untested "No randomization detected on this system"
  66     return -1
  67 } else {
  68     pass $test
  69 }
  70
  71 gdb_test_no_output "set disable-randomization on"
  72 gdb_test "show disable-randomization"         \
  73          "Disabling randomization .* is on." \
  74          "show disable-randomization on"
  75
  76 set addr1 [address_get "fixed first address"]
  77 set addr2 [address_get "fixed second address"]
  78 set test "fixed addresses should match"
  79 if [string equal $addr1 $addr2] {
  80     pass $test
  81 } else {
  82     fail $test
  83 }