Initial creation of sourceware repository
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Stan Shebs
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gdb/testsuite/lib/trace-support.exp
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307
gdb/testsuite/lib/trace-support.exp
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# Copyright (C) 1998 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# Please email any bugs, comments, and/or additions to this file to:
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# bug-gdb@prep.ai.mit.edu
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#
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# Support procedures for trace testing
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#
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#
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# Procedure: gdb_target_supports_trace
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# Returns true if GDB is connected to a target that supports tracing.
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# Allows tests to abort early if not running on a trace-aware target.
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#
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proc gdb_target_supports_trace { } {
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global gdb_prompt
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send_gdb "tstatus\n"
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gdb_expect {
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-re "\[Tt\]race can only be run on.*$gdb_prompt $" {
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return 0
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}
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-re "\[Tt\]race can not be run on.*$gdb_prompt $" {
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return 0
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}
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-re "\[Tt\]arget does not support.*$gdb_prompt $" {
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return 0
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}
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-re ".*\[Ee\]rror.*$gdb_prompt $" {
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return 0
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}
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-re ".*\[Ww\]arning.*$gdb_prompt $" {
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return 0
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}
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-re ".*$gdb_prompt $" {
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return 1
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}
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timeout {
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return 0
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}
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}
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}
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#
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# Procedure: gdb_delete_tracepoints
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# Many of the tests depend on setting tracepoints at various places and
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# running until that tracepoint is reached. At times, we want to start
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# with a clean slate with respect to tracepoints, so this utility proc
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# lets us do this without duplicating this code everywhere.
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#
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proc gdb_delete_tracepoints {} {
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global gdb_prompt
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send_gdb "delete tracepoints\n"
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gdb_expect 30 {
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-re "Delete all tracepoints.*y or n.*$" {
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send_gdb "y\n";
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exp_continue
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}
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-re ".*$gdb_prompt $" { # This happens if there were no tracepoints }
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timeout {
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perror "Delete all tracepoints in delete_tracepoints (timeout)"
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return
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}
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}
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send_gdb "info tracepoints\n"
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gdb_expect 30 {
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-re "No tracepoints.*$gdb_prompt $" {}
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-re "$gdb_prompt $" { perror "tracepoints not deleted" ; return }
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timeout { perror "info tracepoints (timeout)" ; return }
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}
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}
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#
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# Procedure: gdb_trace_setactions
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# Define actions for a tracepoint.
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# Arguments:
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# testname -- identifying string for pass/fail output
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# tracepoint -- to which tracepoint do these actions apply? (optional)
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# args -- list of actions to be defined.
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# Returns:
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# zero -- success
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# non-zero -- failure
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proc gdb_trace_setactions { testname tracepoint args } {
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global gdb_prompt;
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set state 0;
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set passfail "pass";
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send_gdb "actions $tracepoint\n";
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set expected_result "";
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gdb_expect 5 {
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-re "No tracepoint number .*$gdb_prompt $" {
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fail $testname
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return 1;
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}
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-re "Enter actions for tracepoint $tracepoint.*>" {
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if { [llength $args] > 0 } {
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set lastcommand "[lindex $args $state]";
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send_gdb "[lindex $args $state]\n";
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incr state;
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set expected_result [lindex $args $state];
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incr state;
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} else {
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send_gdb "end\n";
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}
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exp_continue;
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}
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-re "\(.*\)\[\r\n\]+\[ \t]*> $" {
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if { $expected_result != "" } {
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regsub "^\[^\r\n\]+\[\r\n\]+" "$expect_out(1,string)" "" out;
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if ![regexp $expected_result $out] {
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set passfail "fail";
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}
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set expected_result "";
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}
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if { $state < [llength $args] } {
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send_gdb "[lindex $args $state]\n";
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incr state;
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set expected_result [lindex $args $state];
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incr state;
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} else {
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send_gdb "end\n";
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set expected_result "";
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}
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exp_continue;
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}
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-re "\(.*\)$gdb_prompt $" {
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if { $expected_result != "" } {
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if ![regexp $expected_result $expect_out(1,string)] {
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set passfail "fail";
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}
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set expected_result "";
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}
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if { [llength $args] < $state } {
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set passfail "fail";
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}
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}
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default {
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set passfail "fail";
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}
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}
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if { $testname != "" } {
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$passfail $testname;
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}
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if { $passfail == "pass" } then {
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return 0;
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} else {
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return 1;
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}
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}
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#
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# Procedure: gdb_tfind_test
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# Find a specified trace frame.
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# Arguments:
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# testname -- identifying string for pass/fail output
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# tfind_arg -- frame (line, PC, etc.) identifier
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# exp_res -- Expected result of frame test
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# args -- Test expression
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# Returns:
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# zero -- success
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# non-zero -- failure
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#
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proc gdb_tfind_test { testname tfind_arg exp_res args } {
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global gdb_prompt;
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if { "$args" != "" } {
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set expr "$exp_res";
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set exp_res "$args";
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} else {
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set expr "(int) \$trace_frame";
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}
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set passfail "fail";
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gdb_test "tfind $tfind_arg" "" ""
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send_gdb "printf \"x \%d x\\n\", $expr\n";
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gdb_expect 10 {
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-re "x (-*\[0-9\]+) x" {
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if { $expect_out(1,string) == $exp_res } {
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set passfail "pass";
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}
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exp_continue;
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}
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-re "$gdb_prompt $" { }
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}
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$passfail "$testname";
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if { $passfail == "pass" } then {
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return 0;
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} else {
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return 1;
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}
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}
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#
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# Procedure: gdb_readexpr
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# Arguments:
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# gdb_expr -- the expression whose value is desired
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# Returns:
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# the value of gdb_expr, as evaluated by gdb.
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# [FIXME: returns -1 on error, which is sometimes a legit value]
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#
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proc gdb_readexpr { gdb_expr } {
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global gdb_prompt;
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set result -1;
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send_gdb "print $gdb_expr\n"
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gdb_expect 5 {
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-re "\[$\].*= (\[0-9\]+).*$gdb_prompt $" {
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set result $expect_out(1,string);
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}
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-re "$gdb_prompt $" { }
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default { }
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}
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return $result;
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}
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#
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# Procedure: gdb_gettpnum
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# Arguments:
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# tracepoint (optional): if supplied, set a tracepoint here.
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# Returns:
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# the tracepoint ID of the most recently set tracepoint.
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#
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proc gdb_gettpnum { tracepoint } {
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global gdb_prompt;
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if { $tracepoint != "" } {
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gdb_test "trace $tracepoint" "" ""
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}
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return [gdb_readexpr "\$tpnum"];
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}
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#
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# Procedure: gdb_find_function_baseline
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# Arguments:
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# func_name -- name of source function
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# Returns:
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# Sourcefile line of function definition (open curly brace),
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# or -1 on failure. Caller must check return value.
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# Note:
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# Works only for open curly brace at beginning of source line!
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#
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proc gdb_find_function_baseline { func_name } {
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global gdb_prompt;
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set baseline -1;
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send_gdb "list $func_name\n"
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# gdb_expect {
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# -re "\[\r\n\]\[\{\].*$gdb_prompt $" {
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# set baseline 1
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# }
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# }
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}
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#
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# Procedure: gdb_find_function_baseline
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# Arguments:
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# filename: name of source file of desired function.
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# Returns:
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# Sourcefile line of function definition (open curly brace),
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# or -1 on failure. Caller must check return value.
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# Note:
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# Works only for open curly brace at beginning of source line!
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#
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proc gdb_find_recursion_test_baseline { filename } {
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global gdb_prompt;
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set baseline -1;
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gdb_test "list $filename:1" "" ""
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send_gdb "search gdb_recursion_test line 0\n"
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gdb_expect {
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-re "(\[0-9\]+)\[\t \]+\{.*line 0.*$gdb_prompt $" {
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set baseline $expect_out(1,string);
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}
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-re "$gdb_prompt $" { }
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default { }
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}
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return $baseline;
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}
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