| # Copyright 1997, 1999, 2007-2008, 2010-2012 Free Software Foundation, |
| # Inc. |
| |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| |
| # This program tests the 'catch syscall' functionality. |
| # |
| # It was written by Sergio Durigan Junior <sergiodj@linux.vnet.ibm.com> |
| # on September/2008. |
| |
| if { [is_remote target] || ![isnative] } then { |
| continue |
| } |
| |
| |
| global srcfile |
| set testfile "catch-syscall" |
| set srcfile ${testfile}.c |
| set binfile ${objdir}/${subdir}/${testfile} |
| |
| # All (but the last) syscalls from the example code |
| # They are ordered according to the file, so do not change this. |
| set all_syscalls { "close" "chroot" } |
| set all_syscalls_numbers { } |
| # The last syscall (exit()) does not return, so |
| # we cannot expect the catchpoint to be triggered |
| # twice. It is a special case. |
| set last_syscall "exit_group" |
| |
| if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } { |
| untested catch-syscall.exp |
| return -1 |
| } |
| |
| # Until "catch syscall" is implemented on other targets... |
| if {![istarget "hppa*-hp-hpux*"] && ![istarget "*-linux*"]} then { |
| continue |
| } |
| |
| # This shall be updated whenever 'catch syscall' is implemented |
| # on some architecture. |
| #if { ![istarget "i\[34567\]86-*-linux*"] |
| if { ![istarget "x86_64-*-linux*"] && ![istarget "i\[34567\]86-*-linux*"] |
| && ![istarget "powerpc-*-linux*"] && ![istarget "powerpc64-*-linux*"] |
| && ![istarget "sparc-*-linux*"] && ![istarget "sparc64-*-linux*"] |
| && ![istarget "mips*-linux*"] } { |
| continue |
| } |
| |
| # Internal procedure used to check if, after issuing a 'catch syscall' |
| # command (without arguments), the 'info breakpoints' command displays |
| # that '"any syscall"' is to be caught. |
| proc check_info_bp_any_syscall {} { |
| global gdb_prompt |
| |
| # Verifying that the catchpoint appears in the 'info breakpoints' |
| # command, but with "<any syscall>". |
| set thistest "catch syscall appears in 'info breakpoints'" |
| gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscall \"<any syscall>\".*" $thistest |
| } |
| |
| # Internal procedure used to check if, after issuing a 'catch syscall X' |
| # command (with arguments), the 'info breakpoints' command displays |
| # that the syscall 'X' is to be caught. |
| proc check_info_bp_specific_syscall { syscall } { |
| global gdb_prompt |
| |
| set thistest "syscall(s) $syscall appears in 'info breakpoints'" |
| gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscall(\[(\]s\[)\])? (.)?${syscall}(.)?.*" $thistest |
| } |
| |
| # Internal procedure used to check if, after issuing a 'catch syscall X' |
| # command (with many arguments), the 'info breakpoints' command displays |
| # that the syscalls 'X' are to be caught. |
| proc check_info_bp_many_syscalls { syscalls } { |
| global gdb_prompt |
| set filter_str "" |
| |
| foreach name $syscalls { |
| set filter_str "${filter_str}${name}, " |
| } |
| |
| set filter_str [ string trimright $filter_str ", " ] |
| |
| set thistest "syscalls $filter_str appears in 'info breakpoints'" |
| gdb_test "info breakpoints" ".*catchpoint.*keep y.*syscalls (.)?${filter_str}(.)?.*" $thistest |
| } |
| |
| # This procedure checks if there was a call to a syscall. |
| proc check_call_to_syscall { syscall } { |
| global gdb_prompt |
| |
| set thistest "program has called $syscall" |
| gdb_test "continue" "Catchpoint .*(call to syscall .?${syscall}.?).*" $thistest |
| } |
| |
| # This procedure checks if the syscall returned. |
| proc check_return_from_syscall { syscall } { |
| global gdb_prompt |
| |
| set thistest "syscall $syscall has returned" |
| gdb_test "continue" "Catchpoint .*(returned from syscall (.)?${syscall}(.)?).*" $thistest |
| } |
| |
| # Internal procedure that performs two 'continue' commands and checks if |
| # a syscall call AND return occur. |
| proc check_continue { syscall } { |
| global gdb_prompt |
| |
| # Testing if the 'continue' stops at the |
| # specified syscall_name. If it does, then it should |
| # first print that the infeior has called the syscall, |
| # and after print that the syscall has returned. |
| |
| # Testing if the inferiorr has called the syscall. |
| check_call_to_syscall $syscall |
| # And now, that the syscall has returned. |
| check_return_from_syscall $syscall |
| } |
| |
| # Inserts a syscall catchpoint with an argument. |
| proc insert_catch_syscall_with_arg { syscall } { |
| global gdb_prompt |
| |
| # Trying to set the catchpoint |
| set thistest "catch syscall with arguments ($syscall)" |
| gdb_test "catch syscall $syscall" "Catchpoint .*(syscall (.)?${syscall}(.)?( \[\[0-9\]+\])?).*" $thistest |
| |
| check_info_bp_specific_syscall $syscall |
| } |
| |
| # Inserts a syscall catchpoint with many arguments. |
| proc insert_catch_syscall_with_many_args { syscalls numbers } { |
| global gdb_prompt |
| set catch [ join $syscalls " " ] |
| set filter_str "" |
| |
| foreach name $syscalls number $numbers { |
| set filter_str "${filter_str}'${name}' \[${number}\] " |
| } |
| |
| set filter_str [ string trimright $filter_str " " ] |
| |
| # Trying to set the catchpoint |
| set thistest "catch syscall with arguments ($filter_str)" |
| gdb_test "catch syscall $catch" "Catchpoint .*(syscalls (.)?${filter_str}(.)?).*" $thistest |
| |
| check_info_bp_many_syscalls $syscalls |
| } |
| |
| proc check_for_program_end {} { |
| global gdb_prompt |
| |
| # Deleting the catchpoints |
| delete_breakpoints |
| |
| gdb_continue_to_end |
| |
| } |
| |
| proc test_catch_syscall_without_args {} { |
| global gdb_prompt all_syscalls last_syscall |
| |
| # Trying to set the syscall |
| set thistest "setting catch syscall without arguments" |
| gdb_test "catch syscall" "Catchpoint .*(syscall).*" $thistest |
| |
| check_info_bp_any_syscall |
| |
| # We have to check every syscall |
| foreach name $all_syscalls { |
| check_continue $name |
| } |
| |
| # At last but not least, we check if the inferior |
| # has called the last (exit) syscall. |
| check_call_to_syscall $last_syscall |
| |
| # Now let's see if the inferior correctly finishes. |
| check_for_program_end |
| } |
| |
| proc test_catch_syscall_with_args {} { |
| global gdb_prompt |
| set syscall_name "close" |
| |
| insert_catch_syscall_with_arg $syscall_name |
| |
| # Can we continue until we catch the syscall? |
| check_continue $syscall_name |
| |
| # Now let's see if the inferior correctly finishes. |
| check_for_program_end |
| } |
| |
| proc test_catch_syscall_with_many_args {} { |
| global gdb_prompt all_syscalls all_syscalls_numbers |
| |
| insert_catch_syscall_with_many_args $all_syscalls $all_syscalls_numbers |
| |
| # Can we continue until we catch the syscalls? |
| foreach name $all_syscalls { |
| check_continue $name |
| } |
| |
| # Now let's see if the inferior correctly finishes. |
| check_for_program_end |
| } |
| |
| proc test_catch_syscall_with_wrong_args {} { |
| global gdb_prompt |
| # mlock is not called from the source |
| set syscall_name "mlock" |
| |
| insert_catch_syscall_with_arg $syscall_name |
| |
| # Now, we must verify if the program stops with a continue. |
| # If it doesn't, everything is right (since we don't have |
| # a syscall named "mlock" in it). Otherwise, this is a failure. |
| set thistest "catch syscall with unused syscall ($syscall_name)" |
| gdb_continue_to_end $thistest |
| } |
| |
| proc test_catch_syscall_restarting_inferior {} { |
| global gdb_prompt |
| set syscall_name "chroot" |
| |
| insert_catch_syscall_with_arg $syscall_name |
| |
| # Let's first reach the call of the syscall. |
| check_call_to_syscall $syscall_name |
| |
| # Now, restart the program |
| rerun_to_main |
| |
| # And check for call/return |
| check_continue $syscall_name |
| |
| # Can we finish? |
| check_for_program_end |
| } |
| |
| proc test_catch_syscall_fail_nodatadir {} { |
| global gdb_prompt |
| |
| # Sanitizing. |
| delete_breakpoints |
| |
| # Make sure GDB doesn't load the syscalls xml from the system data |
| # directory. |
| gdb_test_no_output "set data-directory /the/path/to/nowhere" |
| |
| # Testing to see if we receive a warning when calling "catch syscall" |
| # without XML support (without datadir). |
| set thistest "Catch syscall displays a warning when there is no XML support (no datadir set)" |
| gdb_test "catch syscall" "warning: Could not load the syscall XML file.*warning: GDB will not be able to display syscall names nor to verify if.*any provided syscall numbers are valid.*Catchpoint .*(syscall).*" $thistest |
| |
| # Since the catchpoint was set, we must check if it's present at |
| # "info breakpoints" |
| check_info_bp_any_syscall |
| |
| # Sanitizing. |
| delete_breakpoints |
| } |
| |
| proc do_syscall_tests {} { |
| global gdb_prompt srcdir |
| |
| # NOTE: We don't have to point gdb at the correct data-directory. |
| # For the build tree that is handled by INTERNAL_GDBFLAGS. |
| |
| # Verify that the 'catch syscall' help is available |
| set thistest "help catch syscall" |
| gdb_test "help catch syscall" "Catch system calls.*" $thistest |
| |
| # Try to set a catchpoint to a nonsense syscall |
| set thistest "catch syscall to a nonsense syscall is prohibited" |
| gdb_test "catch syscall nonsense_syscall" "Unknown syscall name .*" $thistest |
| |
| # Testing the 'catch syscall' command without arguments. |
| # This test should catch any syscalls. |
| if [runto_main] then { test_catch_syscall_without_args } |
| |
| # Testing the 'catch syscall' command with arguments. |
| # This test should only catch the specified syscall. |
| if [runto_main] then { test_catch_syscall_with_args } |
| |
| # Testing the 'catch syscall' command with many arguments. |
| # This test should catch $all_syscalls. |
| if [runto_main] then { test_catch_syscall_with_many_args } |
| |
| # Testing the 'catch syscall' command with WRONG arguments. |
| # This test should not trigger any catchpoints. |
| if [runto_main] then { test_catch_syscall_with_wrong_args } |
| |
| # Testing the 'catch' syscall command during a restart of |
| # the inferior. |
| if [runto_main] then { test_catch_syscall_restarting_inferior } |
| } |
| |
| proc test_catch_syscall_without_args_noxml {} { |
| # We will need the syscall names even not using it |
| # because we need to know know many syscalls are in |
| # the example file. |
| global gdb_prompt all_syscalls last_syscall |
| |
| delete_breakpoints |
| |
| set thistest "Catch syscall without arguments and without XML support" |
| gdb_test "catch syscall" "Catchpoint .*(syscall).*" |
| |
| # Now, we should be able to set a catchpoint, |
| # and GDB shall not display the warning anymore. |
| foreach name $all_syscalls { |
| # Unfortunately, we don't know the syscall number |
| # that will be caught because this information is |
| # arch-dependent. Thus, we try to catch anything |
| # similar to a number. |
| check_continue "\[0-9\]*" |
| } |
| |
| # At last but not least, we check if the inferior |
| # has called the last (exit) syscall. |
| check_call_to_syscall "\[0-9\]*" |
| |
| delete_breakpoints |
| } |
| |
| proc test_catch_syscall_with_args_noxml {} { |
| global gdb_prompt |
| |
| # The number of the "close" syscall. This is our |
| # option for a "long-estabilished" syscall in all |
| # Linux architectures, but unfortunately x86_64 and |
| # a few other platforms don't "follow the convention". |
| # Because of this, we need this ugly check :-(. |
| set close_number "" |
| if { [istarget "x86_64-*-linux*"] } { |
| set close_number "3" |
| } else { |
| set close_number "6" |
| } |
| |
| delete_breakpoints |
| |
| insert_catch_syscall_with_arg $close_number |
| |
| check_continue $close_number |
| |
| delete_breakpoints |
| } |
| |
| proc test_catch_syscall_with_wrong_args_noxml {} { |
| global gdb_prompt |
| |
| delete_breakpoints |
| |
| # Even without XML support, GDB should not accept unknown |
| # syscall names for the catchpoint. |
| set thistest "Catch a nonsense syscall without XML support" |
| gdb_test "catch syscall nonsense_syscall" "Unknown syscall name .nonsense_syscall.*" $thistest |
| |
| delete_breakpoints |
| } |
| |
| proc do_syscall_tests_without_xml {} { |
| global gdb_prompt srcdir |
| |
| # Make sure GDB doesn't load the syscalls xml from the system data |
| # directory. |
| gdb_test_no_output "set data-directory /the/path/to/nowhere" |
| |
| # Let's test if we can catch syscalls without XML support. |
| # We should succeed, but GDB is not supposed to print syscall names. |
| if [runto_main] then { test_catch_syscall_without_args_noxml } |
| |
| # The only valid argument "catch syscall" should accept is the |
| # syscall number, and not the name (since it can't translate a |
| # name to a number). |
| # |
| # It's worth mentioning that we only try to catch the syscall |
| # close(). This is because the syscall number is an arch-dependent |
| # information, so we can't assume that we know every syscall number |
| # in this system. Therefore, we have decided to use a "long-estabilished" |
| # system call, and close() just sounded the right choice :-). |
| if [runto_main] then { test_catch_syscall_with_args_noxml } |
| |
| # Now, we'll try to provide a syscall name (valid or not) to the command, |
| # and expect it to fail. |
| if [runto_main] then { test_catch_syscall_with_wrong_args_noxml } |
| } |
| |
| # This procedure fills the vector "all_syscalls_numbers" with the proper |
| # numbers for the used syscalls according to the architecture. |
| proc fill_all_syscalls_numbers {} { |
| global all_syscalls_numbers |
| |
| # For Linux on x86, PPC, PPC64, SPARC and SPARC64, the numbers for the syscalls |
| # "close" and "chroot" are the same. |
| if { [istarget "i\[34567\]86-*-linux*"] |
| || [istarget "powerpc-*-linux*"] || [istarget "powerpc64-*-linux*"] |
| || [istarget "sparc-*-linux*"] || [istarget "sparc64-*-linux*"] } { |
| set all_syscalls_numbers { "6" "61" } |
| } |
| } |
| |
| # Start with a fresh gdb |
| |
| gdb_exit |
| set do_xml_test ![gdb_skip_xml_test] |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| |
| # Execute the tests, using XML support |
| if $do_xml_test { |
| do_syscall_tests |
| |
| # Now, we have to see if GDB displays a warning when we |
| # don't set the data-directory but try to use catch syscall |
| # anyway. For that, we must restart GDB first. |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| test_catch_syscall_fail_nodatadir |
| } |
| |
| # Restart gdb |
| |
| gdb_exit |
| gdb_start |
| gdb_reinitialize_dir $srcdir/$subdir |
| gdb_load ${binfile} |
| |
| # Execute the tests, without XML support. In this case, GDB will |
| # only display syscall numbers, and not syscall names. |
| do_syscall_tests_without_xml |
