display.exp

gdb-6.8 Linux下的调试程序 最新版本

#   Copyright 1997, 1998, 1999, 2000, 2001, 2003, 2007, 2008
#   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/>.

# Please email any bugs, comments, and/or additions to this file to:
# [e-mail]

# display.exp   Test display commands
#               Also do some printing stuff for coverage's sake.
#
if $tracelevel then {
	strace $tracelevel
}

set testfile display
set srcfile  ${testfile}.c
set binfile  ${objdir}/${subdir}/${testfile}



if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug nowarnings}] != "" } {
    untested display.exp
    return -1
}
if [target_info exists gdb_stub] {
    gdb_step_for_stub;
}

# Preserve the old timeout, and set a new one that should be
# sufficient to avoid timing out during this test.
set oldtimeout $timeout
set timeout [expr "$timeout + 60"]
verbose "Timeout is now $timeout seconds" 2

# use this to debug:
#log_user 1

gdb_exit
gdb_start
gdb_reinitialize_dir $srcdir/$subdir
gdb_load ${binfile}

# Some coverage stuff
#
if ![target_info exists use_gdb_stub] {
    gdb_test "kill" ".*The program is not being run.*"
    gdb_test "detach" ".*"
    gdb_test "run" ".*"

    gdb_load ${binfile}
    gdb_test "kill" ".*" "kill again"
    gdb_test "detach" ".*" "detach again"

    gdb_exit
    gdb_start
    gdb_reinitialize_dir $srcdir/$subdir
    gdb_load ${binfile}
}

# Ok, on to real life
#
if ![runto_main] then {
    fail "Could not run to main - other tests will fail."
    continue
}

# Disable hardware watchpoints if necessary.
if [target_info exists gdb,no_hardware_watchpoints] {
    gdb_test "set can-use-hw-watchpoints 0" "" ""
}

gdb_test "break 14" ".*Breakpoint 2.*"           "break  do_loops"
gdb_test "cont"     ".*Breakpoint 2, do_loops.*" "get to do_loops"

# Create stopping points.
#
gdb_test "watch sum"    ".*\[Ww\]atchpoint 3: sum.*" "set watch"
gdb_test "break 19"     ".*Breakpoint 4.*" "break 19"

# Create displays for those points
#
gdb_test "info disp" ".*There are no auto-display expressions now..*" "inf disp"
gdb_test "disp i" ".*1: i = 0.*" "display i"
gdb_test "disp/x j" ".*2: /x j = 0x0.*" "display j"
gdb_test "disp/i &k" ".*3: x/i &k(\r\n|  )$hex:.*" "display &k"
gdb_test "disp/f f" ".*4: /f f = 3.1415*" "display/f f"
gdb_test "disp/s &sum" ".*5: x/s &sum  $hex.*sum.:.*" "display/s &sum"

# Hit the displays
#
gdb_test "cont" ".*\[Ww\]atchpoint 3: sum.*\[1-9\]*: x/s &sum.*\[1-9\]*: /f f = 3.1415\r\n\[1-9\]*: x/i &k.*\r\n\[1-9\]*: /x j = 0x0\r\n\[1-9\]*: i = 0.*" "first disp"
gdb_test "cont" ".*\[Ww\]atchpoint 3: sum.*\[1-9\]*: x/s &sum.*\[1-9\]*: /f f = 4.1415\r\n\[1-9\]*: x/i &k.*\r\n\[1-9\]*: /x j = 0x0.*\[1-9\]*: i = 0.*" "second disp"

gdb_test "enab  disp 6" ".*No display number 6..*" "catch err"
gdb_test "disab disp 1" ".*" "disab disp 1"
gdb_test "disab disp 2" ".*" "disab disp 2"
gdb_test "enab disp 1"  ".*" "re-enab"
gdb_test "enab disp 1"  ".*" "re-enab of enab"
gdb_test "undisp 5"     ".*" "undisp"
gdb_test "info disp"    ".*Auto-display expressions now in effect.*y  /f f.*y  /1bi &k.*n  /x j.*y  i.*" "info disp"

gdb_test "cont" ".*\[Ww\]atch.*5.1415.*.*i = 0.*" "next hit"

send_gdb "undisp\n"
gdb_expect {
    -re ".*Delete all auto-display expressions.*y or n. $" {
        send_gdb "y\n"
        gdb_expect {
            -re "y\r\n$gdb_prompt $" {
                pass "undisp all"
            }
            -re ".*$gdb_prompt $" {
                fail "some un-helpful response"
            }
            -re ".*Delete all.*$" {
                fail "re-ask question"
            }
            timeout { fail "timeout" }
        }
    }
    -re ".*$gdb_prompt $" {
        fail "undisp all"
    }
    timeout { fail "timeout" }
}

gdb_test "disab 3" ".*.*" "disab 3"
gdb_test "cont" ".*Breakpoint 4.*" "watch off"

# Now the printf tests
#
# The "finish" command may leave us mid-line in the caller on some
# targets, including but not limited to the m68k, i386 & PA.  So we
# have to arrange to step until we hit the line with the call to
# "do_vars".
send_gdb "finish\n"
gdb_expect {
    -re ".*do_loops\\(\\);.*$gdb_prompt $" {
	send_gdb "step\n"
	exp_continue
    }
    -re ".*do_vars.*$gdb_prompt $" {
	pass "finish"
    }
    -re ".*$gdb_prompt $" {
	fail "finish"
	gdb_suppress_tests
    }
    timeout  {
	fail "(timeout) finish"
	gdb_suppress_tests
    }
}

gdb_test "step"      ".*do_vars.*.*27.*"
gdb_test "tbreak 37" ".*Breakpoint 5 a.*"
gdb_test "cont"      ".*do_vars.*37.*37.*"

# Beat on printf a bit
#
gdb_test "printf" ".*Argument required.*"
gdb_test "printf %d" ".*Bad format string, missing.*"
gdb_test "printf \"%d" ".*Bad format string, non-terminated.*"
gdb_test "printf \"%d%d\",i" ".*Wrong number of arguments.*"
gdb_test "printf \"\\\\!\\a\\f\\r\\t\\v\\b\\n\"" ".*!.*"
gdb_test "printf \"\"" ".*" "re-set term"
gdb_test "printf \"\\w\"" ".*Unrecognized escape character.*"
gdb_test "printf \"%d\" j" ".*Invalid argument syntax.*"
gdb_test "printf \"%p\\n\", 0" "\\(nil\\)"
gdb_test "printf \"%p\\n\", 1" "0x1"

# play with "print", too
#
gdb_test "print/r j" ".*Undefined output format.*"
gdb_test "print j"   ".*" "debug test output"

# x/0 j doesn't produce any output and terminates PA64 process when testing
if [istarget "hppa2.0w-hp-hpux11*"] {
    xfail "'x/0 j' terminates PA64 process - skipped test point"
} else {
    gdb_test "x/0 j" ".*"
}
if [istarget "hppa*-hp-hpux*"] {
    # on HP-UX you could access the first page without getting an error
    gdb_test "x/rx j" ".*(Cannot access|Error accessing) memory.*|.*0xa:\[ \t\]*\[0-9\]+.*"
}
gdb_test "print/0 j" ".*Item count other than 1 is meaningless.*" "print/0 j"
gdb_test "print/s sum" " = 1000" "ignored s"
gdb_test "print/i sum" ".*Format letter.*is meaningless.*.*" "no i"
gdb_test "print/a &sum" ".*= $hex.*<sum>.*"
# If the constant below is larger than the length of main, then
# this test will (incorrectly) fail.  So use a small number.
gdb_test "print/a main+4" ".*= $hex.*<.*>.*"
gdb_test "print/a \$pc" ".*= $hex.*<do_vars+.*>.*"
gdb_test "print/a &&j" ".*A .* error in expression.*"

# Done!
#
gdb_exit

# Restore the preserved old timeout value.
set timeout $oldtimeout
verbose "Timeout is now $timeout seconds" 2

return 0