gdb/testsuite/gdb.base/relocate.exp

   1 # Copyright 2002-2003, 2005, 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 # relocate.exp -- Expect script to test loading symbols from unrelocated
  17 #                 object files.
  18
  19 if $tracelevel then {
  20     strace $tracelevel
  21 }
  22
  23 set testfile relocate
  24 set srcfile ${testfile}.c
  25 set binfile ${objdir}/${subdir}/${testfile}.o
  26
  27 remote_exec build "rm -f ${binfile}"
  28 if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" object {debug}] != "" } {
  29      untested relocate.exp
  30      return -1
  31 }
  32
  33 proc get_var_address { var } {
  34     global gdb_prompt hex
  35
  36     # Match output like:
  37     # $1 = (int *) 0x0
  38     # $5 = (int (*)()) 0
  39     # $6 = (int (*)()) 0x24 <function_bar>
  40
  41     gdb_test_multiple "print &${var}" "get address of ${var}" {
  42         -re "\\\$\[0-9\]+ = \\(.*\\) (0|$hex)( <${var}>)?\[\r\n\]+${gdb_prompt} $" {
  43             pass "get address of ${var}"
  44             if { $expect_out(1,string) == "0" } {
  45                 return "0x0"
  46             } else {
  47                 return $expect_out(1,string)
  48             }
  49         }
  50     }
  51     return ""
  52 }
  53
  54
  55
  56 gdb_exit
  57 gdb_start
  58 gdb_reinitialize_dir $srcdir/$subdir
  59
  60 # Load the object file.
  61 gdb_test "add-symbol-file ${binfile} 0" \
  62         "Reading symbols from .*${testfile}\\.o\\.\\.\\.done\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
  63         "add-symbol-file ${testfile}.o 0" \
  64         "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x0\[\r\n\]+\\(y or n\\) " \
  65         "y"
  66
  67 # Print the addresses of static variables.
  68 set static_foo_addr [get_var_address static_foo]
  69 set static_bar_addr [get_var_address static_bar]
  70
  71 # Make sure they have different addresses.
  72 if { "${static_foo_addr}" == "${static_bar_addr}" } {
  73   fail "static variables have different addresses"
  74 } else {
  75   pass "static variables have different addresses"
  76 }
  77
  78 # Print the addresses of global variables.
  79 set global_foo_addr [get_var_address global_foo]
  80 set global_bar_addr [get_var_address global_bar]
  81
  82 # Make sure they have different addresses.
  83 if { "${global_foo_addr}" == "${global_bar_addr}" } {
  84   fail "global variables have different addresses"
  85 } else {
  86   pass "global variables have different addresses"
  87 }
  88
  89 # Print the addresses of functions.
  90 set function_foo_addr [get_var_address function_foo]
  91 set function_bar_addr [get_var_address function_bar]
  92
  93 # Make sure they have different addresses.
  94 if { "${function_foo_addr}" == "${function_bar_addr}" } {
  95   fail "functions have different addresses"
  96 } else {
  97   pass "functions have different addresses"
  98 }
  99
 100 # Now use a variable as an offset to add-symbol-file, and check that
 101 # the functions' addresses change.
 102
 103 gdb_exit
 104 gdb_start
 105 gdb_reinitialize_dir $srcdir/$subdir
 106
 107 gdb_test_no_output "set \$offset = 0x10000"
 108
 109 # Load the object file.
 110 gdb_test "add-symbol-file ${binfile} \$offset" \
 111         "Reading symbols from .*${testfile}\\.o\\.\\.\\.done\\.(|\r\nUsing host libthread_db library .*libthread_db.so.*\\.)" \
 112         "add-symbol-file ${testfile}.o \$offset" \
 113         "add symbol table from file \".*${testfile}\\.o\" at\[ \t\r\n\]+\.text_addr = 0x10000\[\r\n\]+\\(y or n\\) " \
 114         "y"
 115
 116 # Print the addresses of functions.
 117 set new_function_foo_addr [get_var_address function_foo]
 118
 119 # Make sure they have different addresses.
 120 if { "${function_foo_addr}" == "${new_function_foo_addr}" } {
 121   fail "function foo has a different address"
 122 } else {
 123   pass "function foo has a different address"
 124 }
 125
 126 # Now try loading the object as an exec-file; we should be able to print
 127 # the values of variables after we do this.
 128
 129 gdb_exit
 130 gdb_start
 131 gdb_reinitialize_dir $srcdir/$subdir
 132 gdb_file_cmd ${binfile}
 133
 134 # Check the values of the variables.
 135 gdb_test "print static_foo" "\\\$$decimal = 1"
 136 gdb_test "print static_bar" "\\\$$decimal = 2"
 137 gdb_test "print global_foo" "\\\$$decimal = 3"
 138 gdb_test "print global_bar" "\\\$$decimal = 4"