199 lines
5 KiB
Text
199 lines
5 KiB
Text
# step.exp -- Expect script to test gdb with step.c
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# Copyright (C) 1992, 1997, 2007, 2008 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 3 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, see <http://www.gnu.org/licenses/>.
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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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# This file was written by Hiro Sugawara. (hiro@lynx.com)
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#
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# This test really needs some major surgery to be acceptable, but
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# I'm just about burnt out on lynx work, so I'm not doing it now.
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#
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# * The test has an indeterminate number of pass/fails
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# for each run (it runs a small group of tests until
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# it's timer kicks off). This is very bad for nightly
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# automated regression testing.
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#
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# * It tries to "step" from withint he prologue of a
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# function. This isn't support in gdb (it's going
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# to act like a continue).
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#
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# * This test rarely check that it stopped in sensible
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# places. (see previous bullet -- this test doesn't
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# catch the fact it continued rather than stepped)
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if $tracelevel then {
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strace $tracelevel
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}
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set program_exited 0
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proc set_bp { where } {
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global gdb_prompt
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send_gdb "break $where\n"
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# The first regexp is what we get with -g, the second without -g.
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gdb_expect {
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-re "Break.* at .*: file .*, line \[0-9\]*.*$gdb_prompt $" {}
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-re "Breakpoint \[0-9\]* at 0x\[0-9a-f\]*.*$gdb_prompt $" {}
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-re "$gdb_prompt $" { fail "setting breakpoint at $where" ; return 0 }
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timeout { fail "setting breakpoint at $where (timeout)" ; return 0 }
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}
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pass "set_bp"
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}
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proc step_it { cmd } {
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global gdb_prompt
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global program_exited
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send_gdb "$cmd\n"
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gdb_expect {
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-re "0x\[0-9A-Fa-f\]* *in.*\r\n$gdb_prompt $" { pass "step_it"; return 0 }
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-re "0x\[0-9A-Fa-f\]* *\[0-9\]*.*\r\n$gdb_prompt $" { pass "step_it"; return 1 }
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-re "Program exited .*\n$gdb_prompt $" {
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set program_exited 1
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return -1
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}
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-re "$gdb_prompt $" { fail "single-stepping ($cmd).\n" ; return -1 }
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timeout { fail "single-stepping ($cmd) timout.\n" ; return -1 }
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}
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}
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proc step_inst {} {
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step_it "stepi"
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}
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proc step_source {} {
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step_it "step"
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}
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proc continue_all {} {
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global gdb_prompt
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send_gdb "continue\n"
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gdb_expect {
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-re "Breakpoint \[0-9\]*, thread\[0-9\]* .*$gdb_prompt $" {
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pass "continue_all"
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return 0
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}
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-re "Program exited .*\n$gdb_prompt $" {
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set program_exited 1
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return 1;
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}
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-re "$gdb_prompt $" { fail "continue" ; return -1 }
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timeout { fail "continue (timeout)" ; return -1 }
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}
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}
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proc check_threads { num_threads } {
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global gdb_prompt
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set curr_thread 0
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send_gdb "info threads\n"
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while { $num_threads > 0 } {
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gdb_expect {
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-re "\\* *\[0-9\]* process \[0-9\]* thread \[0-9\]* .*\n" {
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incr curr_thread
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set num_threads [expr $num_threads - 1]
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}
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-re " *\[0-9\]* process \[0-9\]* thread \[0-9\]* .*\n" {
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set num_threads [expr $num_threads - 1]
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}
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-re "$gdb_prompt $" {
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if { $num_threads < 0 } {
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fail "check_threads (too many)" ; return -1
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}
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break
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}
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timeout { fail "check_threads (timeout)" ; return -1 }
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}
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}
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if { $curr_thread == 0 } {
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fail "check_threads (no current thread)\n"
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return -1
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}
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if { $curr_thread > 1 } {
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fail "check_threads (more than one current thread)\n"
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return -1
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}
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return 0
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}
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proc test_cond_wait {} {
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global program_exited
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set_bp 135
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runto 179
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while { 1 } {
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set stepi_counter 0
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while { [step_inst] } {
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if { $program_exited } { break }
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incr stepi_counter
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if { $stepi_counter > 30 } {
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fail "too many stepi's per line\n"
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return -1
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}
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}
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if { $program_exited } { break }
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step_source
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if { $program_exited } { break }
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continue_all
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if { $program_exited } { break }
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check_threads 3
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}
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}
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proc do_tests {} {
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global prms_id
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global bug_id
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global subdir
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global objdir
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global srcdir
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global binfile
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global gdb_prompt
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set prms_id 0
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set bug_id 0
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# Start with a fresh gdb.
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gdb_exit
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gdb_start
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gdb_reinitialize_dir $srcdir/$subdir
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gdb_load $objdir/$subdir/$binfile
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send_gdb "set width 0\n"
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gdb_expect -re "$gdb_prompt $"
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test_cond_wait
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}
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# Check to see if we have an executable to test. If not, then either we
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# haven't tried to compile one, or the compilation failed for some reason.
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# In either case, just notify the user and skip the tests in this file.
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set binfile "step"
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set srcfile "step.c"
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if ![file exists $objdir/$subdir/$binfile] then {
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if $all_flag then {
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warning "$binfile does not exist; tests suppressed."
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}
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} else {
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do_tests
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}
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