gdb/testsuite/gdb.base/bigcore.exp

   1 # Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2004
   2 # Free Software Foundation, Inc.
   3
   4 # This program is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 2 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with this program; if not, write to the Free Software
  16 # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17
  18 # Please email any bugs, comments, and/or additions to this file to:
  19 # bug-gdb@prep.ai.mit.edu
  20
  21 # This file is based on corefile.exp which was written by Fred
  22 # Fish. (fnf@cygnus.com)
  23
  24 if $tracelevel then {
  25         strace $tracelevel
  26 }
  27
  28 set prms_id 0
  29 set bug_id 0
  30
  31 # Are we on a target board?  As of 2004-02-12, GDB didn't have a
  32 # mechanism that would let it efficiently access a remote corefile.
  33
  34 if ![isnative] then {
  35     untested "Remote system"
  36     return
  37 }
  38
  39 # Can the system run this test (in particular support sparse
  40 # corefiles)?  On systems that lack sparse corefile support this test
  41 # consumes too many resources - gigabytes worth of disk space and and
  42 # I/O bandwith.
  43
  44 if { [istarget "*-*-*bsd*"] } {
  45     untested "Kernel lacks sparse corefile support (PR gdb/1551)"
  46     return
  47 }
  48
  49 set testfile "bigcore"
  50 set srcfile ${testfile}.c
  51 set binfile ${objdir}/${subdir}/${testfile}
  52 set corefile ${objdir}/${subdir}/${testfile}.corefile
  53
  54 if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {debug}] != "" } {
  55      gdb_suppress_entire_file "Testcase compile failed, so all tests in this file will automatically fail."
  56 }
  57
  58 # Create a core file named "TESTFILE.corefile" rather than just
  59 # "core", to avoid problems with sys admin types that like to
  60 # regularly prune all files named "core" from the system.
  61
  62 # Some systems append "core" to the name of the program; others append
  63 # the name of the program to "core"; still others (like Linux, as of
  64 # May 2003) create cores named "core.PID".  In the latter case, we
  65 # could have many core files lying around, and it may be difficult to
  66 # tell which one is ours, so let's run the program in a subdirectory.
  67
  68 set found 0
  69 set coredir "${objdir}/${subdir}/coredir.[getpid]"
  70 file mkdir $coredir
  71 catch "system \"(cd ${coredir}; ${binfile}; true) >/dev/null 2>&1\""
  72 set names [glob -nocomplain -directory $coredir *core*]
  73 if {[llength $names] == 1} {
  74     set file [file join $coredir [lindex $names 0]]
  75     remote_exec build "mv $file $corefile"
  76     set found 1
  77 }
  78
  79 # Try to clean up after ourselves.
  80 remote_file build delete [file join $coredir coremmap.data]
  81 remote_exec build "rmdir $coredir"
  82
  83 if { $found == 0  } {
  84     warning "can't generate a core file - core tests suppressed - check ulimit -c"
  85     return 0
  86 }
  87
  88 # Run GDB on the bigcore program up-to where it will dump core.
  89
  90 gdb_exit
  91 gdb_start
  92 gdb_reinitialize_dir $srcdir/$subdir
  93 gdb_load ${binfile}
  94 gdb_test "set print sevenbit-strings" "" \
  95         "set print sevenbit-strings; ${testfile}"
  96 gdb_test "set width 0" "" \
  97         "set width 0; ${testfile}"
  98 if { ![runto_main] } then {
  99     gdb_suppress_tests;
 100 }
 101 set print_core_line [gdb_get_line_number "Dump core"]
 102 gdb_test "tbreak $print_core_line"
 103 gdb_test continue ".*print_string.*"
 104 gdb_test next ".*0 = 0.*"
 105
 106 # Traverse part of bigcore's linked list of memory chunks (forward or
 107 # backward), saving each chunk's address.  I don't know why but
 108 # expect_out didn't work with gdb_test_multiple.
 109
 110 proc extract_heap { dir } {
 111     global gdb_prompt
 112     global expect_out
 113     set heap ""
 114     set test "extract ${dir} heap"
 115     set lim 0
 116     send_gdb "print heap.${dir}\n"
 117     gdb_expect {
 118         -re " = \\(struct list \\*\\) 0x0.*$gdb_prompt $" {
 119             pass "$test"
 120         }
 121         -re " = \\(struct list \\*\\) (0x\[0-9a-f\]*).*$gdb_prompt $" {
 122             set heap [concat $heap $expect_out(1,string)]
 123             if { $lim >= 50 } {
 124                 pass "$test (stop at $lim)"
 125             } else {
 126                 incr lim
 127                 send_gdb "print \$.${dir}\n"
 128                 exp_continue
 129             }
 130         }
 131         -re ".*$gdb_prompt $" {
 132             fail "$test (entry $lim)"
 133         }
 134         timeout {
 135             fail "$test (timeout)"
 136         }
 137     }
 138     return $heap;
 139 }
 140 set next_heap [extract_heap next]
 141 set prev_heap [extract_heap prev]
 142
 143 # Now load up that core file
 144
 145 set test "load corefile"
 146 gdb_test_multiple "core $corefile" "$test" {
 147     -re "A program is being debugged already.  Kill it. .y or n. " {
 148         send_gdb "y\n"
 149         exp_continue
 150     }
 151     -re "Core was generated by.*$gdb_prompt $" {
 152         pass "$test"
 153     }
 154 }
 155
 156 # Finally, re-traverse bigcore's linked list, checking each chunk's
 157 # address against the executable.  Don't use gdb_test_multiple as want
 158 # only one pass/fail.  Don't use exp_continue as the regular
 159 # expression involving $heap needs to be re-evaluated for each new
 160 # response.
 161
 162 proc check_heap { dir heap } {
 163     global gdb_prompt
 164     set test "check ${dir} heap"
 165     set ok 1
 166     set lim 0
 167     send_gdb "print heap.${dir}\n"
 168     while { $ok } {
 169         gdb_expect {
 170             -re " = \\(struct list \\*\\) [lindex $heap $lim].*$gdb_prompt $" {
 171                 if { $lim >= [llength $heap] } {
 172                     pass "$test"
 173                     set ok 0
 174                 } else {
 175                     incr lim
 176                     send_gdb "print \$.${dir}\n"
 177                 }
 178             }
 179             -re ".*$gdb_prompt $" {
 180                 fail "$test (address [lindex $heap $lim])"
 181                 set ok 0
 182             }
 183             timeout {
 184                 fail "$test (timeout)"
 185                 set ok 0
 186             }
 187         }
 188     }
 189 }
 190
 191 check_heap next $next_heap
 192 check_heap prev $prev_heap