Merge GDB 7.5.1

gdb/testsuite/gdb.threads/step.exp

-# step.exp -- Expect script to test gdb with step.c
-# Copyright (C) 1992, 1997, 2007-2012 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/>.
-
-# This file was written by Hiro Sugawara. (hiro@lynx.com)
-#
-# This test really needs some major surgery to be acceptable, but
-# I'm just about burnt out on lynx work, so I'm not doing it now.
-#
-#       * The test has an indeterminate number of pass/fails
-#       for each run (it runs a small group of tests until
-#       it's timer kicks off).  This is very bad for nightly
-#       automated regression testing.
-#
-#       * It tries to "step" from withint he prologue of a
-#       function.  This isn't support in gdb (it's going
-#       to act like a continue).
-#
-#       * This test rarely check that it stopped in sensible
-#       places.  (see previous bullet -- this test doesn't
-#       catch the fact it continued rather than stepped)
-
-
-if $tracelevel then {
-        strace $tracelevel
-}
-
-set program_exited 0
-
-proc set_bp { where } {
-    global gdb_prompt
-
-    send_gdb "break $where\n"
-    # The first regexp is what we get with -g, the second without -g.
-    gdb_expect {
-        -re "Break.* at .*: file .*, line \[0-9\]*.*$gdb_prompt $" {}
-        -re "Breakpoint \[0-9\]* at 0x\[0-9a-f\]*.*$gdb_prompt $" {}
-        -re "$gdb_prompt $" { fail "setting breakpoint at $where" ; return 0 }
-        timeout { fail "setting breakpoint at $where (timeout)" ; return 0 }
-    }
-    pass "set_bp"
-}
-
-proc step_it { cmd } {
-    global gdb_prompt
-    global program_exited
-    global inferior_exited_re
-
-    send_gdb "$cmd\n"
-    gdb_expect {
-        -re "0x\[0-9A-Fa-f\]* *in.*\r\n$gdb_prompt $" { pass "step_it"; return 0 }
-        -re "0x\[0-9A-Fa-f\]* *\[0-9\]*.*\r\n$gdb_prompt $" { pass "step_it"; return 1 }
-        -re "$inferior_exited_re .*\n$gdb_prompt $" {
-                set program_exited 1
-                return -1
-            }
-        -re "$gdb_prompt $"     { fail "single-stepping ($cmd).\n" ; return -1 }
-        timeout { fail "single-stepping ($cmd) timout.\n" ; return -1 }
-    }
-}
-
-proc step_inst {} {
-    step_it "stepi"
-}
-
-proc step_source {} {
-    step_it "step"
-}
-
-proc continue_all {} {
-    global gdb_prompt
-    global inferior_exited_re
-
-    send_gdb "continue\n"
-    gdb_expect {
-        -re "Breakpoint \[0-9\]*, thread\[0-9\]* .*$gdb_prompt $" { 
-            pass "continue_all"
-            return 0
-        }
-        -re "$inferior_exited_re .*\n$gdb_prompt $" {
-            set program_exited 1
-            return 1;
-        }
-        -re "$gdb_prompt $" { fail "continue" ; return -1 }
-        timeout { fail "continue (timeout)" ; return -1 }
-    }
-}
-
-proc check_threads { num_threads } {
-    global gdb_prompt
-
-    set curr_thread 0
-    send_gdb "info threads\n"
-    while { $num_threads > 0 } {
-        gdb_expect {
-            -re "\\* *\[0-9\]* process \[0-9\]* thread \[0-9\]* .*\n" {
-                incr curr_thread
-                set num_threads [expr $num_threads - 1]
-            }
-            -re " *\[0-9\]* process \[0-9\]* thread \[0-9\]* .*\n" {
-                set num_threads [expr $num_threads - 1]
-            }
-            -re "$gdb_prompt $" {
-                if { $num_threads < 0 } {
-                    fail "check_threads (too many)" ; return -1
-                }
-                break
-            }
-            timeout { fail "check_threads (timeout)" ; return -1 }
-        }
-    }
-
-    if { $curr_thread == 0 } {
-        fail "check_threads (no current thread)\n"
-        return -1
-    }
-    if { $curr_thread > 1 } {
-        fail "check_threads (more than one current thread)\n"
-        return -1
-    }
-    return 0
-}
-
-proc test_cond_wait {} {
-    global program_exited
-
-    set_bp      135
-    runto       179
-    while { 1 } {
-        set stepi_counter 0
-        while { [step_inst] } {
-                if { $program_exited } { break }
-                incr stepi_counter
-                if { $stepi_counter > 30 } {
-                        fail "too many stepi's per line\n"
-                        return -1
-                }
-        }
-        if { $program_exited } { break }
-        step_source
-        if { $program_exited } { break }
-        continue_all
-        if { $program_exited } { break }
-        check_threads 3
-    }
-}
-
-proc do_tests {} {
-    global subdir
-    global objdir
-    global srcdir
-    global binfile
-    global gdb_prompt
-
-
-    # Start with a fresh gdb.
-
-    gdb_exit
-    gdb_start
-    gdb_reinitialize_dir $srcdir/$subdir
-    gdb_load $objdir/$subdir/$binfile
-
-    send_gdb "set width 0\n"
-    gdb_expect -re "$gdb_prompt $"
-
-    test_cond_wait
-}
-
-# Check to see if we have an executable to test.  If not, then either we
-# haven't tried to compile one, or the compilation failed for some reason.
-# In either case, just notify the user and skip the tests in this file.
-
-set binfile "step"
-set srcfile "step.c"
-
-if ![file exists $objdir/$subdir/$binfile] then {
-    if $all_flag then {
-        warning "$binfile does not exist; tests suppressed."
-    }
-} else {
-    do_tests
-}