gdb/testsuite/gdb.base/pc-fp.exp

   1 #   Copyright 2002-2020 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 # The doco makes reference to built-in registers -- $pc and $fp.  If
  17 # the ISA contains registers by that name then they should be
  18 # displayed.  If the ISA contains registers identified as being
  19 # equivalent, but have different names, then GDB will provide these as
  20 # aliases.  If the ISA doesn't provide any equivalent registers, then
  21 # GDB will provide registers that map onto the frame's PC and FP.
  22
  23 #
  24 # test running programs
  25 #
  26
  27 standard_testfile
  28
  29 if [get_compiler_info] {
  30     return -1
  31 }
  32
  33 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug nowarnings}]} {
  34     return -1
  35 }
  36
  37 if ![runto_main] then {
  38     perror "couldn't run to breakpoint"
  39     continue
  40 }
  41
  42
  43 # Get the value of PC and FP
  44
  45 set valueof_pc [get_hexadecimal_valueof "\$pc" "0"]
  46 set valueof_fp [get_hexadecimal_valueof "\$fp" "0"]
  47
  48 # Check that the sequence $REGNAME -> REGNUM -> $REGNAME works.  Use
  49 # display since that encodes and then decodes the expression parameter
  50 # (and hence uses the mechanisms we're trying to test).
  51
  52 gdb_test "display/i \$pc" "1: x/i +\\\$pc( +|\r\n)=> ${valueof_pc}.*"
  53 gdb_test "display/w \$fp" "2: x/xw +\\\$fp +${valueof_fp}.*"
  54
  55 gdb_test "info register \$pc" "${valueof_pc}.*"
  56 gdb_test "info register \$fp" "${valueof_fp}.*"
  57
  58 # Regression test for
  59 # http://sourceware.org/bugzilla/show_bug.cgi?id=12659
  60 gdb_test "info register pc fp" \
  61     "pc +${valueof_pc}\[ \t\]+${valueof_pc} <.*>\[\r\n\]+fp +${valueof_fp}\[ \t\]+${valueof_fp}\[\r\n\]+"