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

   1 #   Copyright 2002, 2004, 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 # The doco makes reference to built-in registers -- $pc and $fp.  If
  18 # the ISA contains registers by that name then they should be
  19 # displayed.  If the ISA contains registers identified as being
  20 # equivalent, but have different names, then GDB will provide these as
  21 # aliases.  If the ISA doesn't provide any equivalent registers, then
  22 # GDB will provide registers that map onto the frame's PC and FP.
  23
  24 if $tracelevel then {
  25     strace $tracelevel
  26 }
  27
  28 #
  29 # test running programs
  30 #
  31
  32 set testfile "pc-fp"
  33 set srcfile ${testfile}.c
  34 set binfile ${objdir}/${subdir}/${testfile}
  35
  36 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {
  37     untested pc-fp.exp
  38     return -1
  39 }
  40
  41 if [get_compiler_info ${binfile}] {
  42     return -1
  43 }
  44
  45 gdb_exit
  46 gdb_start
  47 gdb_reinitialize_dir $srcdir/$subdir
  48 gdb_load ${binfile}
  49
  50 if ![runto_main] then {
  51     perror "couldn't run to breakpoint"
  52     continue
  53 }
  54
  55
  56 # Get the value of PC and FP
  57
  58 set valueof_pc [get_hexadecimal_valueof "\$pc" "0"]
  59 set valueof_fp [get_hexadecimal_valueof "\$fp" "0"]
  60
  61 # Check that the sequence $REGNAME -> REGNUM -> $REGNAME works.  Use
  62 # display since that encodes and then decodes the expression parameter
  63 # (and hence uses the mechanisms we're trying to test).
  64
  65 gdb_test "display/i \$pc" "1: x/i +\\\$pc( +|\r\n)=> ${valueof_pc}.*"
  66 gdb_test "display/w \$fp" "2: x/xw +\\\$fp +${valueof_fp}.*"
  67
  68 # FIXME: cagney/2002-09-04: Should also check that ``info registers
  69 # $pc'' et.al.'' come back with the same value as the above displays
  70 # and a print --- assuming that is that people agree to such behavour.
  71 # Need to re-write default_print_registers_info() for it to work (and
  72 # such a rewrite is on the reggroups branch).
  73
  74 # gdb_test "info registers \$pc" "${valueof_pc}"
  75 # gdb_test "info registers \$fp" "${valueof_fp}"