155 lines
4.6 KiB
Text
155 lines
4.6 KiB
Text
# Copyright 2003-2016 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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# Find a pathname to a file that we would execute if the shell was asked
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# to run $arg using the current PATH.
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proc find_gdb { arg } {
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# If the arg directly specifies an existing executable file, then
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# simply use it.
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if [file executable $arg] then {
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return $arg
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}
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set result [which $arg]
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if [string match "/" [ string range $result 0 0 ]] then {
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return $result
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}
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# If everything fails, just return the unqualified pathname as default
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# and hope for best.
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return $arg
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}
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# A helper proc that sets up for self-testing.
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# EXECUTABLE is the gdb to use.
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# FUNCTION is the function to break in, either captured_main
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# or captured_command_loop.
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proc selftest_setup { executable function } {
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global gdb_prompt
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global timeout
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global INTERNAL_GDBFLAGS
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# load yourself into the debugger
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# This can take a relatively long time, particularly for testing where
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# the executable is being accessed over a network, or where gdb does not
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# support partial symbols for a particular target and has to load the
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# entire symbol table. Set the timeout to 10 minutes, which should be
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# adequate for most environments (it *has* timed out with 5 min on a
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# SPARCstation SLC under moderate load, so this isn't unreasonable).
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# After gdb is started, set the timeout to 30 seconds for the duration
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# of this test, and then back to the original value.
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set oldtimeout $timeout
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set timeout 600
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verbose "Timeout is now $timeout seconds" 2
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global gdb_file_cmd_debug_info
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set gdb_file_cmd_debug_info "unset"
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set result [gdb_load $executable]
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set timeout $oldtimeout
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verbose "Timeout is now $timeout seconds" 2
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if { $result != 0 } then {
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return -1
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}
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if { $gdb_file_cmd_debug_info != "debug" } then {
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untested "No debug information, skipping testcase."
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return -1
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}
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# Set a breakpoint at main
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gdb_test "break $function" \
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"Breakpoint.*at.* file.*, line.*" \
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"breakpoint in $function"
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# run yourself
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# It may take a very long time for the inferior gdb to start (lynx),
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# so we bump it back up for the duration of this command.
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set timeout 600
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set description "run until breakpoint at $function"
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gdb_test_multiple "run $INTERNAL_GDBFLAGS" "$description" {
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-re "Starting program.*Breakpoint \[0-9\]+,.*$function .data.* at .*main.c:.*$gdb_prompt $" {
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pass "$description"
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}
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-re "Starting program.*Breakpoint \[0-9\]+,.*$function .data.*$gdb_prompt $" {
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xfail "$description (line numbers scrambled?)"
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}
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-re "vfork: No more processes.*$gdb_prompt $" {
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fail "$description (out of virtual memory)"
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set timeout $oldtimeout
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verbose "Timeout is now $timeout seconds" 2
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return -1
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}
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-re ".*$gdb_prompt $" {
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fail "$description"
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set timeout $oldtimeout
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verbose "Timeout is now $timeout seconds" 2
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return -1
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}
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}
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set timeout $oldtimeout
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verbose "Timeout is now $timeout seconds" 2
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return 0
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}
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# A simple way to run some self-tests.
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proc do_self_tests {function body} {
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global GDB tool
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# Are we on a target board.
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if { [is_remote target] || ![isnative] } then {
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return
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}
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# Run the test with self. Copy the file executable file in case
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# this OS doesn't like to edit its own text space.
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set GDB_FULLPATH [find_gdb $GDB]
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if {[is_remote host]} {
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set xgdb x$tool
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} else {
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set xgdb [standard_output_file x$tool]
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}
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# Remove any old copy lying around.
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remote_file host delete $xgdb
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gdb_start
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set file [remote_download host $GDB_FULLPATH $xgdb]
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set result [selftest_setup $file $function]
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if {$result == 0} then {
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set result [uplevel $body]
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}
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gdb_exit
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catch "remote_file host delete $file"
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if {$result < 0} then {
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warning "Couldn't test self"
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}
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}
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