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# Copyright (C) 2009-2015 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 GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
# Utility for testing variable values using gdb, invoked via dg-final.
# Call pass if variable has the desired value, otherwise fail.
#
# Argument 0 is the line number on which to put a breakpoint
# Argument 1 is the name of the variable to be checked
# possibly prefixed with type: to get the type of the variable
# instead of the value of the variable (the default).
# Argument 2 is the expected value (or type) of the variable
# When asking for the value, the expected value is produced
# calling print on it in gdb. When asking for the type it is
# the literal string with extra whitespace removed.
# Argument 3 handles expected failures and the like
proc gdb-test { args } {
if { ![isnative] || [is_remote target] } { return }
if { [llength $args] >= 4 } {
switch [dg-process-target [lindex $args 3]] {
"S" { }
"N" { return }
"F" { setup_xfail "*-*-*" }
"P" { }
}
}
# This assumes that we are three frames down from dg-test, and that
# it still stores the filename of the testcase in a local variable "name".
# A cleaner solution would require a new DejaGnu release.
upvar 2 name testcase
upvar 2 prog prog
# The command to run on the variable
set arg1 [lindex $args 1]
if { [string equal -length 5 "type:" $arg1] == 1 } {
set command "ptype"
set var [string range $arg1 5 end]
} else {
set command "print"
set var $arg1
}
set gdb_name $::env(GUALITY_GDB_NAME)
set testname "$testcase line [lindex $args 0] [lindex $args 1] == [lindex $args 2]"
set output_file "[file rootname [file tail $prog]].exe"
set cmd_file "[file rootname [file tail $prog]].gdb"
set fd [open $cmd_file "w"]
puts $fd "break [lindex $args 0]"
puts $fd "run"
puts $fd "$command $var"
if { $command == "print" } {
# For values, let gdb interpret them by printing them.
puts $fd "print [lindex $args 2]"
} else {
# Since types can span multiple lines, we need an end marker.
puts $fd "echo TYPE_END\\n"
}
puts $fd "quit"
close $fd
send_log "Spawning: $gdb_name -nx -nw -quiet -x $cmd_file ./$output_file\n"
set res [remote_spawn target "$gdb_name -nx -nw -quiet -x $cmd_file ./$output_file"]
if { $res < 0 || $res == "" } {
unsupported "$testname"
file delete $cmd_file
return
}
remote_expect target [timeout_value] {
# Too old GDB
-re "Unhandled dwarf expression|Error in sourced command file|<unknown type in " {
unsupported "$testname"
remote_close target
file delete $cmd_file
return
}
# print var; print expected
-re {[\n\r]\$1 = ([^\n\r]*)[\n\r]+\$2 = ([^\n\r]*)[\n\r]} {
set first $expect_out(1,string)
set second $expect_out(2,string)
if { $first == $second } {
pass "$testname"
} else {
# We need the -- to disambiguate $first from an option,
# as it may be negative.
send_log -- "$first != $second\n"
fail "$testname"
}
remote_close target
file delete $cmd_file
return
}
# ptype var;
-re {[\n\r]type = (.*)[\n\r][\n\r]TYPE_END[\n\r]} {
set type $expect_out(1,string)
# Squash all extra whitespace/newlines that gdb might use for
# "pretty printing" into one so result is just one line.
regsub -all {[\n\r\t ]+} $type " " type
# Old gdb might output "long int" instead of just "long"
# and "short int" instead of just "short". Canonicalize.
regsub -all {\mlong int\M} $type "long" type
regsub -all {\mshort int\M} $type "short" type
set expected [lindex $args 2]
if { $type == $expected } {
pass "$testname"
} else {
send_log -- "$type != $expected\n"
fail "$testname"
}
remote_close target
file delete $cmd_file
return
}
timeout {
unsupported "$testname"
remote_close target
file delete $cmd_file
return
}
}
unsupported "$testname"
remote_close target
file delete $cmd_file
return
}
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