binutils-gdb/gdb/testsuite/gdb.base/async.exp

#   Copyright 1999-2020 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/>.


#
# test running programs
#

standard_testfile

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

#
# set it up at a breakpoint so we can play with it
#
if ![runto_main] then {
    perror "couldn't run to breakpoint"
    continue
}

gdb_test "break baz" ".*" ""

#
# Make sure we get a 'completed' message when the target is done.
#
gdb_test_no_output "set exec-done-display on"

# Test a background execution command.  COMMAND is the command to
# send.  BEFORE_PROMPT is the pattern expected before the GDB prompt
# is output.  AFTER_PROMPT is the pattern expected after the prompt
# and before "completed".  MESSAGE is optional, and is the pass/fail
# message to br printed.  If omitted, then the command string is used
# as message.
proc test_background {command before_prompt after_prompt {message ""}} {
    global gdb_prompt

    if {$message eq ""} {
        set message $command
    }

    send_gdb "$command\n"
    gdb_expect {
	-re "^$command\r\n${before_prompt}${gdb_prompt}${after_prompt}completed\.\r\n" {
	    pass "$message"
	    return 0
	}
	-re "$gdb_prompt.*completed\.\r\n" {
	    fail "$message"
	}
	-re ".*Asynchronous execution not supported on this target\..*" {
	    unsupported "asynchronous execution not supported: $message"
	}
	timeout  {
	    fail "$message (timeout)"
	}
    }
    return -1
}

if {[test_background "next&" "" ".*z = 9.*"] < 0} {
    return
}

test_background "step&" "" ".*y = foo \\(\\).*" "step& #1"

test_background "step&" "" " foo \\(\\) at .*async.c.*x = 5.*" "step& #2"

set is_stmt [is_stmt_addresses $srcfile]

# Get the next instruction address.
set next_insn_addr ""
set test "get next insn"
gdb_test_multiple {x/2i $pc} "$test" {
    -re "=> $hex .* 0x(\[0-9a-f\]*) .*$gdb_prompt $" {
	set next_insn_addr $expect_out(1,string)
	pass $gdb_test_name
    }
}
set next_insn_is_stmt [hex_in_list $next_insn_addr $is_stmt]

if { $next_insn_is_stmt } {
    set prefix ""
} else {
    # The current PC is printed out.
    set prefix "0x0*$next_insn_addr.*"
}
test_background "stepi&" "" ".*$prefix x = 5; .*"

# Get the next instruction address.
set next_insn_addr ""
set test "get next insn, 2nd"
gdb_test_multiple {x/2i $pc} "$test" {
    -re "=> $hex .* 0x(\[0-9a-f\]*) .*$gdb_prompt $" {
	set next_insn_addr $expect_out(1,string)
	pass $gdb_test_name
    }
}
set next_insn_is_stmt \
    [expr [lsearch -regexp $is_stmt 0x0*$next_insn_addr] != -1]

if { $next_insn_is_stmt } {
    set prefix ""
} else {
    # The current PC is printed out.
    set prefix "0x0*$next_insn_addr.*"
}
# We nexti into the same source line.
test_background "nexti&" "" ".*$prefix x = 5; .*"

if { $next_insn_is_stmt } {
    set prefix ""
} else {
    # PC is in the middle of a source line, so the PC address is displayed.
    set prefix "0x0*$next_insn_addr in "
}
test_background "finish&" \
    "Run till exit from #0  ${prefix}foo \\(\\) at.*async.c.*\r\n" \
    ".*$hex in main \\(\\) at.*async.c.*y = foo \\(\\).*Value returned is.*= 8.*"

set jump_here [gdb_get_line_number "jump here"]
test_background "jump $jump_here&" \
    ".*Continuing at $hex.*" \
    ".*Breakpoint 2, baz \\(\\) at.*async.c.*return 5.*" \
    "jump&"

set until_here [gdb_get_line_number "until here"]
test_background "until $until_here&" \
    ".*" \
    ".*$hex in main \\(\\) at.*async.c.*y = baz \\(\\).*" \
    "until&"

gdb_test_no_output "set exec-done-display off"