gdb/testsuite/gdb.arch/i386-pkru.exp

   1 # Copyright 2015-2019 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 { ![istarget i?86-*-*] && ![istarget x86_64-*-* ] } {
  19     unsupported "skipping x86 PKEYS tests."
  20     return
  21 }
  22
  23 set comp_flags "-I${srcdir}/../nat/"
  24
  25 if { [prepare_for_testing "failed to prepare" ${testfile} ${srcfile} \
  26      [list debug additional_flags=${comp_flags}]] } {
  27     untested "failed to compile x86 PKEYS test.
  28     return -1
  29 }
  30
  31 if ![runto_main] {
  32     untested "could not run to main"
  33     return -1
  34 }
  35
  36 set supports_pkru 0
  37 set test "probe PKRU support"
  38 gdb_test_multiple "print have_pkru()" $test {
  39     -re ".. = 1\r\n$gdb_prompt $" {
  40         pass $test
  41         set supports_pkru 1
  42     }
  43     -re ".. = 0\r\n$gdb_prompt $" {
  44         pass $test
  45     }
  46 }
  47
  48 if { !$supports_pkru } {
  49     unsupported "processor does not support protection key feature."
  50     return
  51 }
  52
  53 # Test pkru register at startup
  54 # set test_string "0"
  55
  56 gdb_test "print \$pkru" "= 0" "pkru register"
  57
  58 # Read values from pseudo registers.
  59 gdb_breakpoint [ gdb_get_line_number "break here 1" ]
  60 gdb_continue_to_breakpoint "break here 1" ".*break here 1.*"
  61
  62 gdb_test "info register pkru" ".*pkru.*0x12345678.*" "read pkru register"
  63 gdb_test "print /x \$pkru = 0x44444444" "= 0x44444444" "set pkru value"
  64 gdb_test "info register pkru" ".*pkru.*0x44444444.*" "read value after setting value"
  65
  66 gdb_breakpoint [ gdb_get_line_number "break here 2" ]
  67 gdb_continue_to_breakpoint "break here 2" ".*break here 2.*"
  68
  69 gdb_test "print /x rd_value" "= 0x44444444" "variable after reading pkru"