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# Copyright 2006, 2007, 2008, 2009, 2010 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 .

# Please email any bugs, comments, and/or additions to this file to:

# bug-gdb@gnu.org

# This file was written by Alexandre Oliva 

if $tracelevel then {

        strace $tracelevel

        }

set prms_id 0

set bug_id 0

# are we on a target board

if ![isnative] then {

    return

}

if [get_compiler_info "ignored"] {

    return -1

}

if {$gcc_compiled == 0} {

    return -1

}

set testfile "prelink"

set libsrcfile ${testfile}-lib.c

set libfile ${objdir}/${subdir}/${testfile}.so

if { [gdb_compile "${srcdir}/${subdir}/${libsrcfile}" "${libfile}" executable [list debug "additional_flags=-fpic -shared -nodefaultlibs"]] != ""} {

    # If creating the shared library fails, maybe we don't have the right tools

    return -1

}

# `--no-exec-shield' is for i386 where prelink in the exec-shield mode is

# forced to push all the libraries tight together to fit into the first two

# memory areas (either the ASCII Shield area or at least below the executable).

# In this case its -R option cannot be applied and we falsely FAIL here as if

# the system is already prelinked prelink has no choice how to randomize the

# single new unprelinked library address without wasting the first one/two

# memory areas.  We do not care of the efficiency of loading such resulting

# exec-shield unfriendly prelinked library.

if {[catch "system \"prelink -qNR --no-exec-shield ${libfile}\""] != 0} {

    # Maybe we don't have prelink.

    return -1

}

set srcfile ${testfile}.c

set binfile ${objdir}/${subdir}/${testfile}t

if { [gdb_compile "${srcdir}/${subdir}/${srcfile} ${libfile}" "${binfile}" executable [list debug "additional_flags=-Wl,-rpath,${objdir}/${subdir}"]] != ""} {

    return -1;

}

set found 0

set coredir "${objdir}/${subdir}/coredir.[getpid]"

file mkdir $coredir

catch "system \"(cd ${coredir}; ulimit -c unlimited; ${binfile}; true) >/dev/null 2>&1\""

foreach i "${coredir}/core ${coredir}/core.coremaker.c ${binfile}.core" {

    if [remote_file build exists $i] {

        remote_exec build "mv $i ${objdir}/${subdir}/prelink.core"

        set found 1

    }

}

# Check for "core.PID".

if { $found == 0 } {

    set names [glob -nocomplain -directory $coredir core.*]

    if {[llength $names] == 1} {

        set corefile [file join $coredir [lindex $names 0]]

        remote_exec build "mv $corefile ${objdir}/${subdir}/prelink.core"

        set found 1

    }

}

# Try to clean up after ourselves.

remote_file build delete [file join $coredir coremmap.data]

remote_exec build "rmdir $coredir"

if { $found == 0  } {

    warning "can't generate a core file - prelink tests suppressed - check ulimit -c"

    return 0

}

if {[catch "system \"prelink -uN ${libfile}\""] != 0} {

    untested "${testfile}.so was not prelinked, maybe system libraries are not prelinked?"

    return 0

}

catch "system \"prelink -qNR --no-exec-shield ${libfile}\""

# Start with a fresh gdb

gdb_exit

gdb_start

gdb_reinitialize_dir $srcdir/$subdir

gdb_load ${binfile}

# Print the "adjusting expectations" message.

gdb_test "set verbose on"

set test "prelink"

global gdb_prompt

gdb_test_multiple "core-file $objdir/$subdir/prelink.core" "$test" {

    -re "warning: \.dynamic section.*not at the expected address.*warning: difference.*caused by prelink, adjusting expectations.*$gdb_prompt $" {

        pass "$test"

    }

}

gdb_exit

return 0