gdb/testsuite/gdb.base/prelink.exp

   1 # Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Please email any bugs, comments, and/or additions to this file to:
  17 # bug-gdb@gnu.org
  18
  19 # This file was written by Alexandre Oliva <aoliva@redhat.com>
  20
  21 if $tracelevel then {
  22         strace $tracelevel
  23         }
  24
  25
  26 # are we on a target board
  27 if ![isnative] then {
  28     return
  29 }
  30
  31 if [get_compiler_info "ignored"] {
  32     return -1
  33 }
  34
  35 if {$gcc_compiled == 0} {
  36     return -1
  37 }
  38
  39 set testfile "prelink"
  40
  41 set libsrcfile ${testfile}-lib.c
  42 set libfile ${objdir}/${subdir}/${testfile}.so
  43 if { [gdb_compile "${srcdir}/${subdir}/${libsrcfile}" "${libfile}" executable [list debug "additional_flags=-fpic -shared -nodefaultlibs"]] != ""} {
  44     # If creating the shared library fails, maybe we don't have the right tools
  45     return -1
  46 }
  47
  48 # `--no-exec-shield' is for i386 where prelink in the exec-shield mode is
  49 # forced to push all the libraries tight together to fit into the first two
  50 # memory areas (either the ASCII Shield area or at least below the executable).
  51 # In this case its -R option cannot be applied and we falsely FAIL here as if
  52 # the system is already prelinked prelink has no choice how to randomize the
  53 # single new unprelinked library address without wasting the first one/two
  54 # memory areas.  We do not care of the efficiency of loading such resulting
  55 # exec-shield unfriendly prelinked library.
  56 if {[catch "system \"prelink -qNR --no-exec-shield ${libfile}\""] != 0} {
  57     # Maybe we don't have prelink.
  58     return -1
  59 }
  60
  61 set srcfile ${testfile}.c
  62 set binfile ${objdir}/${subdir}/${testfile}t
  63 if { [gdb_compile "${srcdir}/${subdir}/${srcfile} ${libfile}" "${binfile}" executable [list debug "additional_flags=-Wl,-rpath,${objdir}/${subdir}"]] != ""} {
  64     return -1;
  65 }
  66
  67 set found 0
  68 set coredir "${objdir}/${subdir}/coredir.[getpid]"
  69 file mkdir $coredir
  70 catch "system \"(cd ${coredir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""
  71
  72 foreach i "${coredir}/core ${coredir}/core.coremaker.c ${binfile}.core" {
  73     if [remote_file build exists $i] {
  74         remote_exec build "mv $i ${objdir}/${subdir}/prelink.core"
  75         set found 1
  76     }
  77 }
  78 # Check for "core.PID".
  79 if { $found == 0 } {
  80     set names [glob -nocomplain -directory $coredir core.*]
  81     if {[llength $names] == 1} {
  82         set corefile [file join $coredir [lindex $names 0]]
  83         remote_exec build "mv $corefile ${objdir}/${subdir}/prelink.core"
  84         set found 1
  85     }
  86 }
  87
  88 # Try to clean up after ourselves.
  89 remote_file build delete [file join $coredir coremmap.data]
  90 remote_exec build "rmdir $coredir"
  91
  92 if { $found == 0  } {
  93     warning "can't generate a core file - prelink tests suppressed - check ulimit -c"
  94     return 0
  95 }
  96
  97 if {[catch "system \"prelink -uN ${libfile}\""] != 0} {
  98     untested "${testfile}.so was not prelinked, maybe system libraries are not prelinked?"
  99     return 0
 100 }
 101 catch "system \"prelink -qNR --no-exec-shield ${libfile}\""
 102
 103 # Start with a fresh gdb
 104
 105 gdb_exit
 106 gdb_start
 107 gdb_reinitialize_dir $srcdir/$subdir
 108 gdb_load ${binfile}
 109
 110 # Print the "adjusting expectations" message.
 111 gdb_test "set verbose on"
 112
 113 gdb_test "core-file $objdir/$subdir/prelink.core" {Using PIC \(Position Independent Code\) prelink displacement.*} "prelink"