# Copyright 2013-2020 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/>.

load_lib trace-support.exp

standard_testfile

if ![gdb_trace_common_supports_arch] {
    unsupported "no trace-common.h support for arch"
    return -1
}

if {[prepare_for_testing "failed to prepare" $testfile $srcfile debug]} {
    return -1
}

proc test_actions_changed { } {
    gdb_breakpoint "end" qualified

    gdb_test "trace subr" "Tracepoint .*" \
	"tracepoint at subr"

    # The first set of tests are regression tests for a GDB bug where
    # the while-stepping count of a tracepoint would be left stale if
    # the tracepoint's actions were redefined, and the new action list
    # had no while-stepping action.

    # First pass, define simple action.
    with_test_prefix "1" {
	gdb_trace_setactions "define simple action" \
	    "" \
	    "collect parm" "^$"

	gdb_test_no_output "tstart"

	gdb_test "continue" ".*Breakpoint \[0-9\]+, end \\(i=1\\) .*" \
	    "advance through tracing"

	gdb_test "tstatus" ".*Collected 1 trace frame.*" \
	    "collected 1 trace frame"

	gdb_test_no_output "tstop"
    }

    # Redefine action, run second trace.
    with_test_prefix "2" {
	gdb_trace_setactions "redefine simple action" \
	    "" \
	    "collect keeping, busy" "^$"

	gdb_test_no_output "tstart"

	gdb_test "continue" ".*Breakpoint \[0-9\]+, end \\(i=2\\) .*" \
	    "advance through tracing"

	gdb_test "tstatus" ".*Collected 1 trace frame.*" \
	    "collected 1 trace frame"

	gdb_test_no_output "tstop"
    }

    # Redefine to stepping action, run third trace.
    with_test_prefix "3" {
	gdb_trace_setactions "redefine to stepping action" \
	    "" \
	    "collect parm" "^$" \
	    "while-stepping 5" "^$" \
	    "collect parm" "^$" \
	    "end" "^$"

	gdb_test_no_output "tstart"

	gdb_test "continue" ".*Breakpoint \[0-9\]+, end \\(i=3\\) .*" \
	    "advance through tracing"

	gdb_test "tstatus" ".*Collected 6 trace frames.*" \
	    "collected 6 trace frames"

	gdb_test_no_output "tstop"
    }

    # Redefine to non-stepping, run fourth trace.
    with_test_prefix "4" {
	gdb_trace_setactions "redefine to non-stepping action" \
	    "" \
	    "collect parm" "^$"

	gdb_test_no_output "tstart"

	gdb_test "continue" ".*Breakpoint \[0-9\]+, end \\(i=4\\) .*" \
	    "advance through tracing"

	gdb_test "tstatus" ".*Collected 1 trace frame.*" \
	    "collected 1 trace frame"

	gdb_test_no_output "tstop"
    }

    # The following tests are related to the above, but use two
    # tracepoints.  They are regression tests for a GDB bug where only
    # the first tracepoint would end up with the step count set.

    # Store the first tracepoint's number.
    gdb_test_no_output "set \$prev_tpnum=\$tpnum" "store previous \$tpnum"

    # And here's the second tracepoint.
    gdb_test "trace subr2" "Tracepoint .*" "tracepoint at subr2"

    # Set a stepping action in both tracepoints, with the "commands"
    # command.
    with_test_prefix "5" {
	gdb_trace_setcommands \
	    "redefine 2 tracepoints to stepping action, using commands" \
	    "\$prev_tpnum-\$tpnum" \
	    "collect parm" "^$" \
	    "while-stepping 5" "^$" \
	    "collect parm" "^$" \
	    "end" "^$"

	gdb_test_no_output "tstart"

	gdb_test "continue" ".*Breakpoint \[0-9\]+, end \\(i=5\\) .*" \
	    "advance through tracing"

	gdb_test "tstatus" ".*Collected 12 trace frames.*" \
	    "collected 12 trace frames"

	gdb_test_no_output "tstop"
    }

    # Redefine the actions of both tracepoints to non-stepping, also
    # using the "commands" command.
    with_test_prefix "6" {
	gdb_trace_setcommands \
	    "redefine 2 tracepoints to non-stepping action, using commands" \
	    "\$prev_tpnum-\$tpnum" \
	    "collect parm" "^$"

	gdb_test_no_output "tstart"

	gdb_test "continue" ".*Breakpoint \[0-9\]+, end \\(i=6\\) .*" \
	    "advance through tracing"

	gdb_test "tstatus" ".*Collected 2 trace frame.*" \
	    "collected 2 trace frames"

	gdb_test_no_output "tstop"
    }
}

# Check whether the target supports tracepoints.

clean_restart $testfile

if ![runto_main] {
    fail "can't run to main to check for trace support"
    return -1
}

if ![gdb_target_supports_trace] {
    unsupported "current target does not support trace"
    return -1
}

test_actions_changed

return 0