250 lines
6.9 KiB
Text
250 lines
6.9 KiB
Text
# Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2004, 2005,
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# 2007, 2008, 2009, 2010 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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# This file is based on corefile.exp which was written by Fred
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# Fish. (fnf@cygnus.com)
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if $tracelevel then {
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strace $tracelevel
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}
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set prms_id 0
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set bug_id 0
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# Are we on a target board? As of 2004-02-12, GDB didn't have a
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# mechanism that would let it efficiently access a remote corefile.
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if ![isnative] then {
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untested "Remote system"
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return
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}
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# Can the system run this test (in particular support sparse
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# corefiles)? On systems that lack sparse corefile support this test
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# consumes too many resources - gigabytes worth of disk space and and
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# I/O bandwith.
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if { [istarget "*-*-*bsd*"]
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|| [istarget "*-*-hpux*"]
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|| [istarget "*-*-solaris*"]
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|| [istarget "*-*-darwin*"]
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|| [istarget "*-*-cygwin*"] } {
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untested "Kernel lacks sparse corefile support (PR gdb/1551)"
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return
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}
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# This testcase causes too much stress (in terms of memory usage)
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# on certain systems...
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if { [istarget "*-*-*irix*"] } {
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untested "Testcase too stressful for this system"
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return
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}
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set testfile "bigcore"
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set srcfile ${testfile}.c
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set binfile ${objdir}/${subdir}/${testfile}
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set corefile ${objdir}/${subdir}/${testfile}.corefile
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if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
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untested bigcore.exp
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return -1
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}
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# Run GDB on the bigcore program up-to where it will dump core.
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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 ${binfile}
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gdb_test "set print sevenbit-strings" "" \
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"set print sevenbit-strings; ${testfile}"
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gdb_test "set width 0" "" \
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"set width 0; ${testfile}"
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if { ![runto_main] } then {
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gdb_suppress_tests;
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}
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set print_core_line [gdb_get_line_number "Dump core"]
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gdb_test "tbreak $print_core_line"
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gdb_test continue ".*print_string.*"
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gdb_test next ".*0 = 0.*"
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# Traverse part of bigcore's linked list of memory chunks (forward or
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# backward), saving each chunk's address.
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proc extract_heap { dir } {
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global gdb_prompt
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global expect_out
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set heap ""
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set test "extract ${dir} heap"
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set lim 0
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gdb_test_multiple "print heap.${dir}" "$test" {
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-re " = \\(struct list \\*\\) 0x0.*$gdb_prompt $" {
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pass "$test"
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}
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-re " = \\(struct list \\*\\) (0x\[0-9a-f\]*).*$gdb_prompt $" {
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set heap [concat $heap $expect_out(1,string)]
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if { $lim >= 200 } {
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pass "$test (stop at $lim)"
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} else {
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incr lim
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send_gdb "print \$.${dir}\n"
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exp_continue
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}
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}
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-re ".*$gdb_prompt $" {
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fail "$test (entry $lim)"
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}
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timeout {
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fail "$test (timeout)"
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}
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}
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return $heap;
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}
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set next_heap [extract_heap next]
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set prev_heap [extract_heap prev]
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# Save the total allocated size within GDB so that we can check
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# the core size later.
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gdb_test "set \$bytes_allocated = bytes_allocated" "" "save heap size"
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# Now create a core dump
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# Rename the core file to "TESTFILE.corefile" rather than just "core",
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# to avoid problems with sys admin types that like to regularly prune
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# all files named "core" from the system.
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# Some systems append "core" to the name of the program; others append
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# the name of the program to "core"; still others (like Linux, as of
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# May 2003) create cores named "core.PID".
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# Save the process ID. Some systems dump the core into core.PID.
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set test "grab pid"
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gdb_test_multiple "info program" $test {
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-re "child process (\[0-9\]+).*$gdb_prompt $" {
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set inferior_pid $expect_out(1,string)
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pass $test
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}
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-re "$gdb_prompt $" {
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set inferior_pid unknown
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pass $test
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}
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}
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# Dump core using SIGABRT
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set oldtimeout $timeout
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set timeout 600
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gdb_test "signal SIGABRT" "Program terminated with signal SIGABRT, .*"
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set timeout $oldtimeout
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# Find the corefile
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set file ""
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foreach pat [list core.${inferior_pid} ${testfile}.core core] {
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set names [glob -nocomplain $pat]
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if {[llength $names] == 1} {
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set file [lindex $names 0]
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remote_exec build "mv $file $corefile"
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break
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}
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}
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if { $file == "" } {
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untested "Can't generate a core file"
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return 0
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}
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# Check that the corefile is plausibly large enough. We're trying to
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# detect the case where the operating system has truncated the file
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# just before signed wraparound. TCL, unfortunately, has a similar
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# problem - so use catch. It can handle the "bad" size but not
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# necessarily the "good" one. And we must use GDB for the comparison,
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# similarly.
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if {[catch {file size $corefile} core_size] == 0} {
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set core_ok 0
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gdb_test_multiple "print \$bytes_allocated < $core_size" "check core size" {
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-re " = 1\r\n$gdb_prompt $" {
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pass "check core size"
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set core_ok 1
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}
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-re " = 0\r\n$gdb_prompt $" {
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pass "check core size"
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set core_ok 0
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}
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}
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} {
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# Probably failed due to the TCL build having problems with very
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# large values. Since GDB uses a 64-bit off_t (when possible) it
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# shouldn't have this problem. Assume that things are going to
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# work. Without this assumption the test is skiped on systems
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# (such as i386 GNU/Linux with patched kernel) which do pass.
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pass "check core size"
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set core_ok 1
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}
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if {! $core_ok} {
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untested "check core size (system does not support large corefiles)"
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return 0
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}
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# Now load up that core file
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set test "load corefile"
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gdb_test_multiple "core $corefile" "$test" {
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-re "A program is being debugged already. Kill it. .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 "Core was generated by.*$gdb_prompt $" {
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pass "$test"
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}
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}
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# Finally, re-traverse bigcore's linked list, checking each chunk's
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# address against the executable. Don't use gdb_test_multiple as want
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# only one pass/fail. Don't use exp_continue as the regular
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# expression involving $heap needs to be re-evaluated for each new
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# response.
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proc check_heap { dir heap } {
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global gdb_prompt
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set test "check ${dir} heap"
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set ok 1
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set lim 0
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send_gdb "print heap.${dir}\n"
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while { $ok } {
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gdb_expect {
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-re " = \\(struct list \\*\\) [lindex $heap $lim].*$gdb_prompt $" {
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if { $lim >= [llength $heap] } {
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pass "$test"
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set ok 0
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} else {
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incr lim
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send_gdb "print \$.${dir}\n"
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}
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}
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-re ".*$gdb_prompt $" {
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fail "$test (address [lindex $heap $lim])"
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set ok 0
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}
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timeout {
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fail "$test (timeout)"
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set ok 0
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}
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}
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}
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}
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check_heap next $next_heap
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check_heap prev $prev_heap
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