binutils-gdb/gdb/testsuite/gdb.base/cond-eval-mode.exp

#   Copyright 2012-2017 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/>.

# Test 'set breakpoint condition-evaluation' settings

standard_testfile

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

if ![runto_main] then {
    fail "can't run to main"
    return 0
}

set test_host "set breakpoint condition-evaluation host"
set test_auto "set breakpoint condition-evaluation auto"
set test_target "set breakpoint condition-evaluation target"

gdb_test_no_output $test_host
gdb_test_no_output $test_auto

# If target-side condition evaluation is not supported, this warning will be
# displayed.
set warning "warning: Target does not support breakpoint condition evaluation.\r\nUsing host evaluation mode instead."

gdb_test_multiple $test_target $test_target {
    -re "$warning\r\n$gdb_prompt $" {
	unsupported $test_target
	return -1
    }

    -re "^$test_target\r\n$gdb_prompt $" {
	pass $test_target
    }
}

# We now know that the target supports target-side conditional
# evaluation.  Now make sure we can force-disable the
# ConditionalBreakpoints RSP feature.
if [gdb_is_target_remote] {
    gdb_test_no_output "set remote conditional-breakpoints-packet off"

    gdb_test $test_target "$warning" \
	"set breakpoint condition-evaluation target, with support disabled"

    # Confirm we can re-enable it.
    gdb_test_no_output "set remote conditional-breakpoints-packet on"
    gdb_test_no_output $test_target "restore $test_target"
}

# Test setting a condition in a breakpoint.  BREAK_COMMAND is the
# break/hwatch command to test.
#
proc test_break { break_command } {
    global gdb_prompt

    with_test_prefix "$break_command" {
	delete_breakpoints

	gdb_test "$break_command foo" "reakpoint.* at .*"

	# A condition that evals true.
	gdb_test "condition \$bpnum cond_global==0" ".*"

	set can_do_cmd 0

	set test "continue"
	gdb_test_multiple $test $test {
	    -re "You may have requested too many.*$gdb_prompt $" {
		pass $test
	    }
	    -re "Breakpoint .*, foo .*$gdb_prompt $" {
		pass $test
		set can_do_cmd 1
	    }
	}

	if { !$can_do_cmd } {
	    unsupported "no target support"
	    return
	}

	delete_breakpoints

	gdb_test "$break_command foo" ".*reakpoint .* at .*"

	# A condition that evals false.
	gdb_test "condition \$bpnum cond_global==1" ".*"

	gdb_test "b bar" "Breakpoint .* at .*"

	gdb_test "continue" "Breakpoint .*, bar .*"
    }
}

# Test setting conditions in watchpoints.  WATCH_COMMAND is the watch
# command to test.
#
proc test_watch { watch_command } {
    global gdb_prompt

    with_test_prefix "$watch_command" {
	if [target_info exists gdb,no_hardware_watchpoints] {
	    unsupported "no target support"
	    return
	}

	delete_breakpoints

	gdb_test "$watch_command global" ".*atchpoint .*: global.*"

	# A condition that evals true.
	gdb_test "condition \$bpnum cond_global==0" ".*"

	set can_do_cmd 0

	set test "continue"
	gdb_test_multiple $test $test {
	    -re "You may have requested too many.*$gdb_prompt $" {
		pass $test
	    }
	    -re "atchpoint .*: global.*$gdb_prompt $" {
		pass $test
		set can_do_cmd 1
	    }
	}

	if { !$can_do_cmd } {
	    unsupported "no target support"
	    return
	}

	delete_breakpoints

	gdb_test "$watch_command global" ".*atchpoint .*: global.*"

	# A condition that evals false.
	gdb_test "condition \$bpnum cond_global==1" ".*"

	gdb_test "b bar" "Breakpoint .* at .*"

	gdb_test "continue" "Breakpoint .*, bar .*"
    }
}

foreach break_command { "break" "hbreak" } {
    test_break $break_command
}

foreach watch_command { "watch" "rwatch" "awatch" } {
    test_watch $watch_command
}