binutils-gdb/gdb/testsuite/gdb.mi/mi-dprintf.exp

#   Copyright (C) 2013-2017 Free Software Foundation, Inc.
#   Contributed by Hui Zhu  <hui@codesourcery.com>

# 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 mi-support.exp
set MIFLAGS "-i=mi"

gdb_exit
if [mi_gdb_start] {
    continue
}

standard_testfile

if {[build_executable $testfile.exp $testfile $srcfile {debug}] == -1} {
    untested "failed to compile"
    return -1
}

mi_delete_breakpoints

set bp_location1 [gdb_get_line_number "set breakpoint 1 here"]
set dp_location1 [gdb_get_line_number "set dprintf 1 here"]

mi_run_to_main

set i 0
mi_gdb_test "[incr i]-dprintf-insert" \
    "$i\\^error,msg=\"-dprintf-insert: Missing <location>\"" "mi insert without location"

mi_gdb_test "[incr i]-dprintf-insert foo" \
    "$i\\^error,msg=\"-dprintf-insert: Missing <format>\"" "mi insert breakpoint without format string"

mi_gdb_test "[incr i]-dprintf-insert 29" \
    "$i\\^error,msg=\"-dprintf-insert: Missing <format>\"" "mi insert second breakpoint without format string"

mi_gdb_test "-break-insert main" ".*" "mi insert breakpoint main"

mi_gdb_test "-dprintf-insert --function main \"hello\"" \
    "\\^done,bkpt={.*}" "explicit dprintf at main"

mi_gdb_test "-dprintf-insert --source $srcfile --line $dp_location1 \"hello\"" \
    "\\^done,bkpt={.*}" "explicit breakpoint at $srcfile:$dp_location1"

mi_gdb_test "-dprintf-insert --source $srcfile \"hello\"" \
    "\\^error,msg=\"-dprintf-insert: --source option requires --function, --label, or --line\"" "invalid explicit dprintf"

mi_delete_breakpoints

set bps [mi_make_breakpoint -type dprintf -func foo -file ".*mi-dprintf.c" \
	     -fullname ".*mi-dprintf.c"]
mi_gdb_test "[incr i]-dprintf-insert foo \"\\\"foobarbazqux\\\" At foo entry\\n\"" \
    "$i\\^done,$bps" "mi insert dprintf foo"

set bps [mi_make_breakpoint -type dprintf -func foo \
		   -file ".*mi-dprintf.c" -fullname ".*mi-dprintf.c" \
		   -line $dp_location1]
mi_gdb_test "[incr i]-dprintf-insert $dp_location1 \"arg=%d, g=%d\\n\" arg g" \
		   "$i\\^done,$bps" "mi insert dprintf dp_location1"

set bps {}
lappend bps [mi_make_breakpoint -type dprintf -func foo \
		 -file ".*mi-dprintf.c" -fullname ".*mi-dprintf.c"]
lappend bps [mi_make_breakpoint -type dprintf -func foo \
		 -file ".*mi-dprintf.c" -fullname ".*mi-dprintf.c" \
		 -line $dp_location1]
mi_gdb_test "[incr i]-break-info" \
    "$i\\^done,[mi_make_breakpoint_table $bps]" \
    "mi info dprintf"

mi_gdb_test "-break-insert $bp_location1" ".*" "mi insert breakpoint bp_location1"

# Helper for mi_continue_dprintf.

proc mi_expect_dprintf {args where msg} {
    global mi_gdb_prompt
    global inferior_spawn_id gdb_spawn_id

    if { $args == "call" || $args == "fprintf" } {
	set foobarbazqux "\"foobarbazqux\""
	set sid $inferior_spawn_id
    } else {
	set foobarbazqux "\\\\\"foobarbazqux\\\\\""
	set sid $gdb_spawn_id
    }

    # Don't expect the prompt here to avoid a race with mi_expect_stop
    # in case $inferior_spawn_id != $gdb_spawn_id.  Otherwise, in that
    # case, we could see the gdb prompt before the inferior output.
    gdb_expect {
	-i $sid
	-re ".*$foobarbazqux $where" {
	    pass $msg
	}
	eof {
	    fail "$msg (eof)"
	}
	timeout {
	    fail "$msg (timeout)"
	}
    }
    mi_expect_stop ".*" ".*" ".*" ".*" ".*" "" "$msg stop"
}

proc mi_continue_dprintf {args} {
    with_test_prefix $args {
	set msg "mi 1st dprintf"
	mi_run_cmd
	mi_expect_dprintf $args "At foo entry.*arg=1234, g=1234" $msg

	set msg "mi 2nd dprintf"
	mi_send_resuming_command "exec-continue" "$msg continue"
	mi_expect_dprintf $args "At foo entry.*arg=1235, g=2222" $msg
    }
}

mi_continue_dprintf "gdb"

# The "call" style depends on having I/O functions available, so test.

if ![target_info exists gdb,noinferiorio] {

    # Now switch styles and rerun; in the absence of redirection the
    # output should be the same.

    mi_gdb_test "set dprintf-style call" ".*" "mi set dprintf style to call"
    mi_continue_dprintf "call"

    mi_gdb_test "set dprintf-function fprintf" ".*" "mi set dprintf-channel stderr"
    mi_gdb_test "set dprintf-channel stderr" ".*" "mi set dprintf channel"
    mi_continue_dprintf "fprintf"
}

set target_can_dprintf 0
set msg "set dprintf style to agent"
send_gdb "set dprintf-style agent\n"
gdb_expect {
    -re "warning: Target cannot run dprintf commands, falling back to GDB printf.*$mi_gdb_prompt$" {
	unsupported "$msg"
    }
    -re ".*done.*$mi_gdb_prompt$" {
	set target_can_dprintf 1
	pass "$msg"
    }
    -re ".*$mi_gdb_prompt$" {
	fail "$msg"
    }
    timeout {
	fail "$msg"
    }
}

if $target_can_dprintf {
    if {[mi_run_cmd] < 0} {
	# This likely means we failed to use target side commands in
	# combination with software breakpoints.  IOW, the target
	# likely doesn't support target-side software breakpoints.
	set target_can_dprintf 0
	unsupported "send dprintf to target"
    }

    if $target_can_dprintf {
	mi_expect_stop ".*" ".*" ".*" ".*" ".*" "" "mi expect stop"

	mi_send_resuming_command "exec-continue" "mi 1st dprintf continue, agent"
	mi_expect_stop ".*" "foo" ".*" ".*" ".*" "" "mi 1st dprintf, agent"

	mi_send_resuming_command "exec-continue" "mi 2nd dprintf continue, agent"

	# The =breakpoint-modified text is a part of the
	# "-exec-continue" output.
	set msg "mi info dprintf second time"
	gdb_expect {
	    -re "=breakpoint-modified," {
		pass $msg
	    }
	    -re ".*$mi_gdb_prompt$" {
		fail "$msg"
	    }
	    timeout {
		fail "$msg"
	    }
	}

	mi_expect_stop ".*" "foo" ".*" ".*" ".*" "" "mi 2nd dprintf, agent"
    }
}

mi_gdb_test "set dprintf-style foobar" ".*error.*" "mi set dprintf style to an unrecognized type"