210 lines
6.5 KiB
Plaintext
210 lines
6.5 KiB
Plaintext
# Copyright 2013-2020 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>. */
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# Test adding and removing a symbol file dynamically:
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# 1) Run to gdb_add_symbol_file in $srcfile.
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# 2) Set a pending breakpoint at bar in $srcfile3.
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# 3) Load the library's symbols using 'add-symbol-file'.
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# 4) 'info files' must display ${lib_basename}.
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# 5) Continue to bar in $srcfile3.
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# 6) Set a breakpoint at foo in $srcfile3.
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# 7) Continue to foo in $srcfile3.
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# 8) Set a breakpoint at gdb_remove_symbol_file.
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# 9) Continue to gdb_remove_symbol_file in $srcfile.
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# 10) Remove the library's symbols using 'remove-symbol-file'.
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# 11) 'info files' must not display ${lib_basename}, anymore.
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# 12) Check that the breakpoints at foo and bar are pending.
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# 13) Check that the execution can continue without error.
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# 14) Regression test for a stale breakpoints bug.
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if {![is_elf_target]} {
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return 0
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}
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if [skip_shlib_tests] {
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return 0
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}
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set target_size TARGET_UNKNOWN
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if {[is_lp64_target]} {
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set target_size TARGET_LP64
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} elseif {[is_ilp32_target]} {
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set target_size TARGET_ILP32
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} else {
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return 0
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}
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set main_basename sym-file-main
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set loader_basename sym-file-loader
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set lib_basename sym-file-lib
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standard_testfile $main_basename.c $loader_basename.c $lib_basename.c
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set libsrc "${srcdir}/${subdir}/${srcfile3}"
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set lib_so [standard_output_file ${lib_basename}.so]
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set lib_syms [shlib_symbol_file ${lib_so}]
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set lib_dlopen [shlib_target_file ${lib_basename}.so]
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set exec_opts [list debug "additional_flags= -I$srcdir/../../include/ -D$target_size\
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-DSHLIB_NAME\\=\"$lib_dlopen\""]
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if [get_compiler_info] {
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return -1
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}
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if {[gdb_compile_shlib $libsrc $lib_so {debug}] != ""} {
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untested "failed to compile shared library"
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return
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}
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if {[prepare_for_testing "failed to prepare" $binfile "$srcfile $srcfile2" $exec_opts]} {
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return
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}
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gdb_load_shlib ${lib_so}
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if ![runto_main] then {
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fail "can't run to main"
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return
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}
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# 1) Run to gdb_add_symbol_file in $srcfile for adding the library's
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# symbols.
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gdb_breakpoint gdb_add_symbol_file
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gdb_continue_to_breakpoint gdb_add_symbol_file
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# 2) Set a pending breakpoint at bar in $srcfile3.
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set result [gdb_breakpoint bar allow-pending]
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if {!$result} then {
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return
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}
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# 3) Add the library's symbols using 'add-symbol-file'.
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set result [gdb_test "add-symbol-file ${lib_syms} addr" \
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"Reading symbols from .*${lib_syms}\\.\\.\\." \
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"add-symbol-file ${lib_basename}.so addr" \
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"add symbol table from file \".*${lib_basename}\\.so\"\
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at.*\\(y or n\\) " \
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"y"]
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if {$result != 0} then {
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return
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}
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# 4) 'info files' must display $srcfile3.
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gdb_test "info files" \
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"^(?=(.*${lib_basename})).*" \
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"info files must display ${lib_basename}"
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# 5) Continue to bar in $srcfile3 to ensure that the breakpoint
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# was bound correctly after adding $shilb_name.
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set lnum_bar [gdb_get_line_number "break at bar" $srcfile3]
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gdb_continue_to_breakpoint bar ".*${lib_basename}\\.c:$lnum_bar.*"
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# 6) Set a breakpoint at foo in $srcfile3.
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set result [gdb_breakpoint foo]
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if {!$result} then {
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return
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}
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# 7) Continue to foo in $srcfile3 to ensure that the breakpoint
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# was bound correctly.
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set lnum_foo [gdb_get_line_number "break at foo" $srcfile3]
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gdb_continue_to_breakpoint foo ".*${lib_basename}\\.c:$lnum_foo.*"
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# 8) Set a breakpoint at gdb_remove_symbol_file in $srcfile for
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# removing the library's symbols.
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set result [gdb_breakpoint gdb_remove_symbol_file]
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if {!$result} then {
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return
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}
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# 9) Continue to gdb_remove_symbol_file in $srcfile.
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gdb_continue_to_breakpoint gdb_remove_symbol_file
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# 10) Remove the library's symbols using 'remove-symbol-file'.
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set result [gdb_test "remove-symbol-file -a addr" \
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""\
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"remove-symbol-file -a addr" \
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"Remove symbol table from file \".*${lib_basename}\\.so\"\\?\
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.*\\(y or n\\) " \
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"y"]
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if {$result != 0} then {
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return
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}
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# 11) 'info files' must not display ${lib_basename}, anymore.
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gdb_test "info files" \
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"^(?!(.*${lib_basename})).*" \
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"info files must not display ${lib_basename}"
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# 12) Check that the breakpoints at foo and bar are pending after
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# removing the library's symbols.
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gdb_test "info breakpoints 3" \
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".*PENDING.*" \
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"breakpoint at foo is pending"
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gdb_test "info breakpoints 4" \
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".*PENDING.*" \
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"breakpoint at bar is pending"
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# 13) Check that the execution can continue without error.
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set lnum_reload [gdb_get_line_number "reload lib here"]
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gdb_breakpoint $lnum_reload
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gdb_continue_to_breakpoint reload ".*${srcfile}:$lnum_reload.*"
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# 14) Regression test for a stale breakpoints bug. Check whether
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# unloading symbols manually without the program actually unloading
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# the library, when breakpoints are inserted doesn't leave stale
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# breakpoints behind.
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with_test_prefix "stale bkpts" {
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# Force breakpoints always inserted.
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gdb_test_no_output "set breakpoint always-inserted on"
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# Get past the library reload.
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gdb_continue_to_breakpoint gdb_add_symbol_file
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# Load the library's symbols.
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gdb_test "add-symbol-file ${lib_syms} addr" \
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"Reading symbols from .*${lib_syms}\\.\\.\\." \
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"add-symbol-file ${lib_basename}.so addr" \
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"add symbol table from file \".*${lib_syms}\"\
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at.*\\(y or n\\) " \
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"y"
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# Set a breakpoint at baz, in the library.
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gdb_breakpoint baz
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gdb_test "info breakpoints 7" ".*y.*0x.*in baz.*" \
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"breakpoint at baz is resolved"
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# Unload symbols manually without the program actually unloading
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# the library.
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gdb_test "remove-symbol-file -a addr" \
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"" \
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"remove-symbol-file -a addr" \
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"Remove symbol table from file \".*${lib_basename}\\.so\"\\?\
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.*\\(y or n\\) " \
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"y"
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gdb_test "info breakpoints 7" ".*PENDING.*" \
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"breakpoint at baz is pending"
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# Check that execution can continue without error. If GDB leaves
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# breakpoints behind, we'll get back a spurious SIGTRAP.
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set lnum_end [gdb_get_line_number "end here"]
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gdb_breakpoint $lnum_end
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gdb_continue_to_breakpoint "end here" ".*end here.*"
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}
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