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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [testsuite/] [gdb.threads/] [step.exp] - Blame information for rev 157

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1 24 jeremybenn
# 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 .
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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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