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

   1 #   Copyright 2002, 2004, 2007-2012 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 if $tracelevel then {
  24     strace $tracelevel
  25 }
  26
  27 #
  28 # test running programs
  29 #
  30
  31 set testfile "pc-fp"
  32 set srcfile ${testfile}.c
  33 set binfile ${objdir}/${subdir}/${testfile}
  34
  35 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {
  36     untested pc-fp.exp
  37     return -1
  38 }
  39
  40 if [get_compiler_info ${binfile}] {
  41     return -1
  42 }
  43
  44 gdb_exit
  45 gdb_start
  46 gdb_reinitialize_dir $srcdir/$subdir
  47 gdb_load ${binfile}
  48
  49 if ![runto_main] then {
  50     perror "couldn't run to breakpoint"
  51     continue
  52 }
  53
  54
  55 # Get the value of PC and FP
  56
  57 set valueof_pc [get_hexadecimal_valueof "\$pc" "0"]
  58 set valueof_fp [get_hexadecimal_valueof "\$fp" "0"]
  59
  60 # Check that the sequence $REGNAME -> REGNUM -> $REGNAME works.  Use
  61 # display since that encodes and then decodes the expression parameter
  62 # (and hence uses the mechanisms we're trying to test).
  63
  64 gdb_test "display/i \$pc" "1: x/i +\\\$pc( +|\r\n)=> ${valueof_pc}.*"
  65 gdb_test "display/w \$fp" "2: x/xw +\\\$fp +${valueof_fp}.*"
  66
  67 # FIXME: cagney/2002-09-04: Should also check that ``info registers
  68 # $pc'' et.al.'' come back with the same value as the above displays
  69 # and a print --- assuming that is that people agree to such behavour.
  70 # Need to re-write default_print_registers_info() for it to work (and
  71 # such a rewrite is on the reggroups branch).
  72
  73 # gdb_test "info registers \$pc" "${valueof_pc}"
  74 # gdb_test "info registers \$fp" "${valueof_fp}"