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# Copyright (C) 1998, 2007, 2008, 2009, 2010 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/>.
#
# Support procedures for trace testing
#
#
# Procedure: gdb_target_supports_trace
# Returns true if GDB is connected to a target that supports tracing.
# Allows tests to abort early if not running on a trace-aware target.
#
proc gdb_target_supports_trace { } {
global gdb_prompt
send_gdb "tstatus\n"
gdb_expect {
-re "\[Tt\]race can only be run on.*$gdb_prompt $" {
return 0
}
-re "\[Tt\]race can not be run on.*$gdb_prompt $" {
return 0
}
-re "\[Tt\]arget does not support.*$gdb_prompt $" {
return 0
}
-re ".*\[Ee\]rror.*$gdb_prompt $" {
return 0
}
-re ".*\[Ww\]arning.*$gdb_prompt $" {
return 0
}
-re ".*$gdb_prompt $" {
return 1
}
timeout {
return 0
}
}
}
#
# Procedure: gdb_delete_tracepoints
# Many of the tests depend on setting tracepoints at various places and
# running until that tracepoint is reached. At times, we want to start
# with a clean slate with respect to tracepoints, so this utility proc
# lets us do this without duplicating this code everywhere.
#
proc gdb_delete_tracepoints {} {
global gdb_prompt
send_gdb "delete tracepoints\n"
gdb_expect 30 {
-re "Delete all tracepoints.*y or n.*$" {
send_gdb "y\n";
exp_continue
}
-re ".*$gdb_prompt $" { # This happens if there were no tracepoints }
timeout {
perror "Delete all tracepoints in delete_tracepoints (timeout)"
return
}
}
send_gdb "info tracepoints\n"
gdb_expect 30 {
-re "No tracepoints.*$gdb_prompt $" {}
-re "$gdb_prompt $" { perror "tracepoints not deleted" ; return }
timeout { perror "info tracepoints (timeout)" ; return }
}
}
#
# Procedure: gdb_trace_setactions
# Define actions for a tracepoint.
# Arguments:
# testname -- identifying string for pass/fail output
# tracepoint -- to which tracepoint do these actions apply? (optional)
# args -- list of actions to be defined.
# Returns:
# zero -- success
# non-zero -- failure
proc gdb_trace_setactions { testname tracepoint args } {
global gdb_prompt;
set state 0;
set passfail "pass";
send_gdb "actions $tracepoint\n";
set expected_result "";
gdb_expect 5 {
-re "No tracepoint number .*$gdb_prompt $" {
fail $testname
return 1;
}
-re "Enter actions for tracepoint $tracepoint.*>" {
if { [llength $args] > 0 } {
set lastcommand "[lindex $args $state]";
send_gdb "[lindex $args $state]\n";
incr state;
set expected_result [lindex $args $state];
incr state;
} else {
send_gdb "end\n";
}
exp_continue;
}
-re "\(.*\)\[\r\n\]+\[ \t]*>$" {
if { $expected_result != "" } {
regsub "^\[^\r\n\]+\[\r\n\]+" "$expect_out(1,string)" "" out;
if ![regexp $expected_result $out] {
set passfail "fail";
}
set expected_result "";
}
if { $state < [llength $args] } {
send_gdb "[lindex $args $state]\n";
incr state;
set expected_result [lindex $args $state];
incr state;
} else {
send_gdb "end\n";
set expected_result "";
}
exp_continue;
}
-re "\(.*\)$gdb_prompt $" {
if { $expected_result != "" } {
if ![regexp $expected_result $expect_out(1,string)] {
set passfail "fail";
}
set expected_result "";
}
if { [llength $args] < $state } {
set passfail "fail";
}
}
default {
set passfail "fail";
}
}
if { $testname != "" } {
$passfail $testname;
}
if { $passfail == "pass" } then {
return 0;
} else {
return 1;
}
}
#
# Procedure: gdb_tfind_test
# Find a specified trace frame.
# Arguments:
# testname -- identifying string for pass/fail output
# tfind_arg -- frame (line, PC, etc.) identifier
# exp_res -- Expected result of frame test
# args -- Test expression
# Returns:
# zero -- success
# non-zero -- failure
#
proc gdb_tfind_test { testname tfind_arg exp_res args } {
global gdb_prompt;
if { "$args" != "" } {
set expr "$exp_res";
set exp_res "$args";
} else {
set expr "(int) \$trace_frame";
}
set passfail "fail";
gdb_test "tfind $tfind_arg" "" ""
send_gdb "printf \"x \%d x\\n\", $expr\n";
gdb_expect 10 {
-re "x (-*\[0-9\]+) x" {
if { $expect_out(1,string) == $exp_res } {
set passfail "pass";
}
exp_continue;
}
-re "$gdb_prompt $" { }
}
$passfail "$testname";
if { $passfail == "pass" } then {
return 0;
} else {
return 1;
}
}
#
# Procedure: gdb_readexpr
# Arguments:
# gdb_expr -- the expression whose value is desired
# Returns:
# the value of gdb_expr, as evaluated by gdb.
# [FIXME: returns -1 on error, which is sometimes a legit value]
#
proc gdb_readexpr { gdb_expr } {
global gdb_prompt;
set result -1;
send_gdb "print $gdb_expr\n"
gdb_expect 5 {
-re "\[$\].*= (\[0-9\]+).*$gdb_prompt $" {
set result $expect_out(1,string);
}
-re "$gdb_prompt $" { }
default { }
}
return $result;
}
#
# Procedure: gdb_gettpnum
# Arguments:
# tracepoint (optional): if supplied, set a tracepoint here.
# Returns:
# the tracepoint ID of the most recently set tracepoint.
#
proc gdb_gettpnum { tracepoint } {
global gdb_prompt;
if { $tracepoint != "" } {
gdb_test "trace $tracepoint" "" ""
}
return [gdb_readexpr "\$tpnum"];
}
#
# Procedure: gdb_find_function_baseline
# Arguments:
# func_name -- name of source function
# Returns:
# Sourcefile line of function definition (open curly brace),
# or -1 on failure. Caller must check return value.
# Note:
# Works only for open curly brace at beginning of source line!
#
proc gdb_find_function_baseline { func_name } {
global gdb_prompt;
set baseline -1;
send_gdb "list $func_name\n"
# gdb_expect {
# -re "\[\r\n\]\[\{\].*$gdb_prompt $" {
# set baseline 1
# }
# }
}
#
# Procedure: gdb_find_function_baseline
# Arguments:
# filename: name of source file of desired function.
# Returns:
# Sourcefile line of function definition (open curly brace),
# or -1 on failure. Caller must check return value.
# Note:
# Works only for open curly brace at beginning of source line!
#
proc gdb_find_recursion_test_baseline { filename } {
global gdb_prompt;
set baseline -1;
gdb_test "list $filename:1" "" ""
send_gdb "search gdb_recursion_test line 0\n"
gdb_expect {
-re "(\[0-9\]+)\[\t \]+\{.*line 0.*$gdb_prompt $" {
set baseline $expect_out(1,string);
}
-re "$gdb_prompt $" { }
default { }
}
return $baseline;
}
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