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

   1 # Copyright 2013-2022 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     return
  80 }
  81
  82 # 1) Run to gdb_add_symbol_file in $srcfile for adding the library's
  83 #    symbols.
  84 gdb_breakpoint gdb_add_symbol_file
  85 gdb_continue_to_breakpoint gdb_add_symbol_file
  86
  87 # 2) Set a pending breakpoint at bar in $srcfile3.
  88 set result [gdb_breakpoint bar allow-pending]
  89 if {!$result} then {
  90    return
  91 }
  92
  93 # 3) Add the library's symbols using 'add-symbol-file'.
  94 set result [gdb_test "add-symbol-file ${lib_syms} addr" \
  95                      "Reading symbols from .*${lib_syms}\\.\\.\\." \
  96                      "add-symbol-file ${lib_basename}.so addr" \
  97                      "add symbol table from file \".*${lib_basename}\\.so\"\
  98  at.*\\(y or n\\) " \
  99                      "y"]
 100 if {$result != 0} then {
 101    return
 102 }
 103
 104 # 4) 'info files' must display $srcfile3.
 105 gdb_test "info files" \
 106          "^(?=(.*${lib_basename})).*" \
 107          "info files must display ${lib_basename}"
 108
 109 # 5) Continue to bar in $srcfile3 to ensure that the breakpoint
 110 #    was bound correctly after adding $shilb_name.
 111 set lnum_bar [gdb_get_line_number "break at bar" $srcfile3]
 112 gdb_continue_to_breakpoint bar ".*${lib_basename}\\.c:$lnum_bar.*"
 113
 114 # 6) Set a breakpoint at foo in $srcfile3.
 115 set result [gdb_breakpoint foo]
 116 if {!$result} then {
 117     return
 118 }
 119
 120 # 7) Continue to foo in $srcfile3 to ensure that the breakpoint
 121 #    was bound correctly.
 122 set lnum_foo [gdb_get_line_number "break at foo" $srcfile3]
 123 gdb_continue_to_breakpoint foo ".*${lib_basename}\\.c:$lnum_foo.*"
 124
 125 # 8) Set a breakpoint at gdb_remove_symbol_file in $srcfile for
 126 #    removing the library's symbols.
 127 set result [gdb_breakpoint gdb_remove_symbol_file]
 128 if {!$result} then {
 129     return
 130 }
 131
 132 # 9) Continue to gdb_remove_symbol_file in $srcfile.
 133 gdb_continue_to_breakpoint gdb_remove_symbol_file
 134
 135 # 10) Remove the library's symbols using 'remove-symbol-file'.
 136 set result [gdb_test "remove-symbol-file -a addr" \
 137                      ""\
 138                      "remove-symbol-file -a addr" \
 139                      "Remove symbol table from file \".*${lib_basename}\\.so\"\\?\
 140 .*\\(y or n\\) " \
 141                      "y"]
 142 if {$result != 0} then {
 143     return
 144 }
 145
 146 # 11) 'info files' must not display ${lib_basename}, anymore.
 147 gdb_test "info files" \
 148          "^(?!(.*${lib_basename})).*" \
 149          "info files must not display ${lib_basename}"
 150
 151 # 12) Check that the breakpoints at foo and bar are pending after
 152 #     removing the library's symbols.
 153 gdb_test "info breakpoints 3" \
 154          ".*PENDING.*" \
 155          "breakpoint at foo is pending"
 156
 157 gdb_test "info breakpoints 4" \
 158          ".*PENDING.*" \
 159          "breakpoint at bar is pending"
 160
 161 # 13) Check that the execution can continue without error.
 162 set lnum_reload [gdb_get_line_number "reload lib here"]
 163 gdb_breakpoint $lnum_reload
 164 gdb_continue_to_breakpoint reload ".*${srcfile}:$lnum_reload.*"
 165
 166 # 14) Regression test for a stale breakpoints bug.  Check whether
 167 # unloading symbols manually without the program actually unloading
 168 # the library, when breakpoints are inserted doesn't leave stale
 169 # breakpoints behind.
 170 with_test_prefix "stale bkpts" {
 171     # Force breakpoints always inserted.
 172     gdb_test_no_output "set breakpoint always-inserted on"
 173
 174     # Get past the library reload.
 175     gdb_continue_to_breakpoint gdb_add_symbol_file
 176
 177     # Load the library's symbols.
 178     gdb_test "add-symbol-file ${lib_syms} addr" \
 179         "Reading symbols from .*${lib_syms}\\.\\.\\." \
 180         "add-symbol-file ${lib_basename}.so addr" \
 181         "add symbol table from file \".*${lib_syms}\"\
 182 at.*\\(y or n\\) " \
 183         "y"
 184
 185     # Set a breakpoint at baz, in the library.
 186     gdb_breakpoint baz
 187
 188     gdb_test "info breakpoints 7" ".*y.*0x.*in baz.*" \
 189         "breakpoint at baz is resolved"
 190
 191     # Unload symbols manually without the program actually unloading
 192     # the library.
 193     gdb_test "remove-symbol-file -a addr" \
 194         "" \
 195         "remove-symbol-file -a addr" \
 196         "Remove symbol table from file \".*${lib_basename}\\.so\"\\?\
 197 .*\\(y or n\\) " \
 198         "y"
 199
 200     gdb_test "info breakpoints 7" ".*PENDING.*" \
 201         "breakpoint at baz is pending"
 202
 203     # Check that execution can continue without error.  If GDB leaves
 204     # breakpoints behind, we'll get back a spurious SIGTRAP.
 205     set lnum_end [gdb_get_line_number "end here"]
 206     gdb_breakpoint $lnum_end
 207     gdb_continue_to_breakpoint "end here" ".*end here.*"
 208 }