gdb/testsuite/gdb.base/sym-file.exp

   1 # Copyright 2013-2019 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 # Test adding and removing a symbol file dynamically:
  17 # 1)  Run to gdb_add_symbol_file in $srcfile.
  18 # 2)  Set a pending breakpoint at bar in $srcfile3.
  19 # 3)  Load the library's symbols using 'add-symbol-file'.
  20 # 4)  'info files' must display ${lib_basename}.
  21 # 5)  Continue to bar in $srcfile3.
  22 # 6)  Set a breakpoint at foo in $srcfile3.
  23 # 7)  Continue to foo in $srcfile3.
  24 # 8)  Set a breakpoint at gdb_remove_symbol_file.
  25 # 9)  Continue to gdb_remove_symbol_file in $srcfile.
  26 # 10) Remove the library's symbols using 'remove-symbol-file'.
  27 # 11) 'info files' must not display ${lib_basename}, anymore.
  28 # 12) Check that the breakpoints at foo and bar are pending.
  29 # 13) Check that the execution can continue without error.
  30 # 14) Regression test for a stale breakpoints bug.
  31
  32 if {![is_elf_target]} {
  33     return 0
  34 }
  35
  36 if [skip_shlib_tests] {
  37     return 0
  38 }
  39
  40 set target_size TARGET_UNKNOWN
  41 if {[is_lp64_target]} {
  42     set target_size TARGET_LP64
  43 } elseif {[is_ilp32_target]} {
  44    set target_size TARGET_ILP32
  45 } else {
  46     return 0
  47 }
  48
  49 set main_basename sym-file-main
  50 set loader_basename sym-file-loader
  51 set lib_basename sym-file-lib
  52
  53 standard_testfile $main_basename.c $loader_basename.c $lib_basename.c
  54
  55 set libsrc "${srcdir}/${subdir}/${srcfile3}"
  56 set lib_so [standard_output_file ${lib_basename}.so]
  57 set lib_syms [shlib_symbol_file ${lib_so}]
  58 set lib_dlopen [shlib_target_file ${lib_basename}.so]
  59
  60 set exec_opts [list debug "additional_flags= -I$srcdir/../../include/ -D$target_size\
  61  -DSHLIB_NAME\\=\"$lib_dlopen\""]
  62
  63 if [get_compiler_info] {
  64     return -1
  65 }
  66
  67 if {[gdb_compile_shlib $libsrc $lib_so {debug}] != ""} {
  68     untested "failed to compile shared library"
  69     return
  70 }
  71
  72 if {[prepare_for_testing "failed to prepare"  $binfile "$srcfile $srcfile2" $exec_opts]} {
  73     return
  74 }
  75
  76 gdb_load_shlib ${lib_so}
  77
  78 if ![runto_main] then {
  79     fail "can't run to main"
  80     return
  81 }
  82
  83 # 1) Run to gdb_add_symbol_file in $srcfile for adding the library's
  84 #    symbols.
  85 gdb_breakpoint gdb_add_symbol_file
  86 gdb_continue_to_breakpoint gdb_add_symbol_file
  87
  88 # 2) Set a pending breakpoint at bar in $srcfile3.
  89 set result [gdb_breakpoint bar allow-pending]
  90 if {!$result} then {
  91    return
  92 }
  93
  94 # 3) Add the library's symbols using 'add-symbol-file'.
  95 set result [gdb_test "add-symbol-file ${lib_syms} addr" \
  96                      "Reading symbols from .*${lib_syms}\\.\\.\\." \
  97                      "add-symbol-file ${lib_basename}.so addr" \
  98                      "add symbol table from file \".*${lib_basename}\\.so\"\
  99  at.*\\(y or n\\) " \
 100                      "y"]
 101 if {$result != 0} then {
 102    return
 103 }
 104
 105 # 4) 'info files' must display $srcfile3.
 106 gdb_test "info files" \
 107          "^(?=(.*${lib_basename})).*" \
 108          "info files must display ${lib_basename}"
 109
 110 # 5) Continue to bar in $srcfile3 to ensure that the breakpoint
 111 #    was bound correctly after adding $shilb_name.
 112 set lnum_bar [gdb_get_line_number "break at bar" $srcfile3]
 113 gdb_continue_to_breakpoint bar ".*${lib_basename}\\.c:$lnum_bar.*"
 114
 115 # 6) Set a breakpoint at foo in $srcfile3.
 116 set result [gdb_breakpoint foo]
 117 if {!$result} then {
 118     return
 119 }
 120
 121 # 7) Continue to foo in $srcfile3 to ensure that the breakpoint
 122 #    was bound correctly.
 123 set lnum_foo [gdb_get_line_number "break at foo" $srcfile3]
 124 gdb_continue_to_breakpoint foo ".*${lib_basename}\\.c:$lnum_foo.*"
 125
 126 # 8) Set a breakpoint at gdb_remove_symbol_file in $srcfile for
 127 #    removing the library's symbols.
 128 set result [gdb_breakpoint gdb_remove_symbol_file]
 129 if {!$result} then {
 130     return
 131 }
 132
 133 # 9) Continue to gdb_remove_symbol_file in $srcfile.
 134 gdb_continue_to_breakpoint gdb_remove_symbol_file
 135
 136 # 10) Remove the library's symbols using 'remove-symbol-file'.
 137 set result [gdb_test "remove-symbol-file -a addr" \
 138                      ""\
 139                      "remove-symbol-file -a addr" \
 140                      "Remove symbol table from file \".*${lib_basename}\\.so\"\\?\
 141 .*\\(y or n\\) " \
 142                      "y"]
 143 if {$result != 0} then {
 144     return
 145 }
 146
 147 # 11) 'info files' must not display ${lib_basename}, anymore.
 148 gdb_test "info files" \
 149          "^(?!(.*${lib_basename})).*" \
 150          "info files must not display ${lib_basename}"
 151
 152 # 12) Check that the breakpoints at foo and bar are pending after
 153 #     removing the library's symbols.
 154 gdb_test "info breakpoints 3" \
 155          ".*PENDING.*" \
 156          "breakpoint at foo is pending"
 157
 158 gdb_test "info breakpoints 4" \
 159          ".*PENDING.*" \
 160          "breakpoint at bar is pending"
 161
 162 # 13) Check that the execution can continue without error.
 163 set lnum_reload [gdb_get_line_number "reload lib here"]
 164 gdb_breakpoint $lnum_reload
 165 gdb_continue_to_breakpoint reload ".*${srcfile}:$lnum_reload.*"
 166
 167 # 14) Regression test for a stale breakpoints bug.  Check whether
 168 # unloading symbols manually without the program actually unloading
 169 # the library, when breakpoints are inserted doesn't leave stale
 170 # breakpoints behind.
 171 with_test_prefix "stale bkpts" {
 172     # Force breakpoints always inserted.
 173     gdb_test_no_output "set breakpoint always-inserted on"
 174
 175     # Get past the library reload.
 176     gdb_continue_to_breakpoint gdb_add_symbol_file
 177
 178     # Load the library's symbols.
 179     gdb_test "add-symbol-file ${lib_syms} addr" \
 180         "Reading symbols from .*${lib_syms}\\.\\.\\." \
 181         "add-symbol-file ${lib_basename}.so addr" \
 182         "add symbol table from file \".*${lib_syms}\"\
 183 at.*\\(y or n\\) " \
 184         "y"
 185
 186     # Set a breakpoint at baz, in the library.
 187     gdb_breakpoint baz
 188
 189     gdb_test "info breakpoints 7" ".*y.*0x.*in baz.*" \
 190         "breakpoint at baz is resolved"
 191
 192     # Unload symbols manually without the program actually unloading
 193     # the library.
 194     gdb_test "remove-symbol-file -a addr" \
 195         "" \
 196         "remove-symbol-file -a addr" \
 197         "Remove symbol table from file \".*${lib_basename}\\.so\"\\?\
 198 .*\\(y or n\\) " \
 199         "y"
 200
 201     gdb_test "info breakpoints 7" ".*PENDING.*" \
 202         "breakpoint at baz is pending"
 203
 204     # Check that execution can continue without error.  If GDB leaves
 205     # breakpoints behind, we'll get back a spurious SIGTRAP.
 206     set lnum_end [gdb_get_line_number "end here"]
 207     gdb_breakpoint $lnum_end
 208     gdb_continue_to_breakpoint "end here" ".*end here.*"
 209 }