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6cf66e763a
Add a test for verifying different methods of passing arguments to the inferior: the start, starti and run commands, as well as `set args`. All these methods work naturally when using the unix or native-extended-gdbserver target boards. Since those are non-stub boards, GDB runs new inferiors and therefore pass arguments to them. With target boards where GDB connects to a stub, for example with native-gdbserver, they don't really make sense. The inferior process is already started when GDB connects. However, the "run" method is still tested with stub targets, because the gdb_run_cmd procedure is adapted for stub targets. Instead of issuing the `run` command, it spawns whatever program is supposed to bring up the stub (gdbserver, for example) using gdb_reload and makes GDB connect to it. So this allows us to exercise argument passing through the gdbserver command line, when testing with the native-gdbserver board. Note that there is already a gdb.base/args.exp, but this tests specifically the --args switch of GDB. Perhaps it could be integrated in this new test, as a new "method". gdb/testsuite/ChangeLog: * lib/gdb.exp (gdb_run_cmd): Return success or failure. * gdb.base/inferior-args.exp: New file. * gdb.base/inferior-args.c: New file. Change-Id: Ib61ea6220a47f9f67aed2960dcacd240cb57af70
125 lines
3.3 KiB
Plaintext
125 lines
3.3 KiB
Plaintext
# Copyright 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 running an inferior with arguments.
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# This does not work on boards that don't support inferior arguments.
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if [target_info exists noargs] then {
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verbose "skipping gdb.base/inferior-args.exp because of noargs"
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return
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}
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standard_testfile .c
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if {[build_executable "failed to prepare" $testfile $srcfile debug] == -1} {
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return
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}
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proc do_test { method } {
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global binfile hex
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# The second arg is an empty string on purpose.
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set inferior_args { "first arg" "" "third-arg" }
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clean_restart $binfile
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if { $method == "start" } {
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# The start command does not make sense for a stub.
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if { [use_gdb_stub] } {
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return;
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}
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if { [gdb_start_cmd $inferior_args] < 0 } {
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fail "could not issue start command"
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return -1
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}
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# Consume up to the GDB prompt after the stop.
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gdb_test "" ".*main.*" "stop at main"
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} elseif { $method == "starti" } {
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# The starti command does not make sense for a stub.
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if { [use_gdb_stub] } {
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return;
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}
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if { [gdb_starti_cmd $inferior_args] < 0 } {
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fail "could not issue start command"
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return -1
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}
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# Consume up to the GDB prompt after the stop.
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gdb_test "" "" "stop at first instruction"
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# Put a breakpoint and continue until main.
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if { ![gdb_breakpoint "main" message] } {
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fail "could not set breakpoint on main"
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return -1
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}
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if { [gdb_continue "main"] != 0 } {
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fail "could not continue to main"
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return -1
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}
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} elseif { $method == "run" } {
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if { ![gdb_breakpoint "main" message] } {
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fail "could not set breakpoint on main"
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return -1
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}
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# The run command does not make sense for a stub, but GDB_RUN_CMD
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# does the right thing when the target is a stub (start the stub,
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# connect to it, and "continue").
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#
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# This allows us to test arguments passed on the gdbserver command
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# line.
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if { [gdb_run_cmd $inferior_args] < 0 } {
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fail "could not run"
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return -1
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}
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# Consume up to the GDB prompt after the stop.
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gdb_test "" ".*main.*" "stop at main"
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} elseif { $method == "set args" } {
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# Using "set args" does not make sense with a stub.
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if { [use_gdb_stub] } {
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return;
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}
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gdb_test_no_output "set args $inferior_args"
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if { ![runto_main] } {
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fail "could not run to main"
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return -1
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}
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} else {
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error "invalid method $method"
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}
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# Now that we are stopped at main, inspect argc/argv.
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gdb_test "print argc" " = 4"
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gdb_test "print argv\[0\]" " = $hex \".*\""
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gdb_test "print argv\[1\]" " = $hex \"first arg\""
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gdb_test "print argv\[2\]" " = $hex \"\""
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gdb_test "print argv\[3\]" " = $hex \"third-arg\""
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}
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foreach_with_prefix method { "start" "starti" "run" "set args" } {
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do_test $method
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}
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