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# Expect script for common symbol tests
#   Copyright 2003, 2005, 2006, 2007 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Written by H.J. Lu (hjl@gnu.org)
#

# Make sure that ld correctly handles common symbols in ELF.

# This test can only be run on ELF platforms.
if ![is_elf_format] {
    return
}

set test1       "size/aligment change of common symbols"
set test1w1     "$test1 (warning 1)"
set test1w2     "$test1 (warning 2)"
set test1c1     "$test1 (change 1)"
set test1c2     "$test1 (change 2)"

if { ![is_remote host] && [which $CC] == 0 } {
    untested $test1w1
    untested $test1w2
    untested $test1c1
    untested $test1c2
    return
}
if { [istarget score-*-*] } {
    untested $test1w1
    untested $test1w2
    untested $test1c1
    untested $test1c2
    return
}

proc dump_common1 { testname } {
    global exec_output
    global READELF

    send_log "$READELF --syms tmpdir/common1.o | grep foo\n"
    set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1.o | grep foo"]

    if {   ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+)4(\[        \]+)(COMMON|OBJECT)(\[  \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output]
        || ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)21(\[       \]+)OBJECT(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo1" $exec_output] } {
        verbose $exec_output
        fail $testname
        return 0
    }

    return 1
}

proc stt_common_test { options testname } {
    global exec_output
    global READELF
    global ld

    set options "$options tmpdir/common1a.o"

    if { ! [ld_simple_link $ld tmpdir/common.exe $options] } {
      unresolved $testname
      return 0
    }

    send_log "$READELF --syms tmpdir/common.exe | grep foo\n"
    set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common.exe | grep foo"]

    if {![regexp "(\[   \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)(\[0-9\]+)(\[       \]+)COMMON(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo2" $exec_output] } {
        fail $testname
        return 0
    }

    pass $testname
    return 1
}

# Check to see if the assembler is generating symbols with the STT_COMMON type.
proc assembler_generates_commons {} {
    global exec_output
    global READELF

    verbose "Check to see if STT_COMMON symbols are being generated:"
    set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1a.o | grep foo"]

    if { ![regexp "(\[  \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+).(\[        \]+)COMMON(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output] } {
        verbose "STT_COMMON not generated"
        return 0
    }

    verbose "STT_COMMON's are generated"
    return 1
}


if {   ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1a.c tmpdir/common1a.o]
    || ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1b.c tmpdir/common1b.o] } {
    unresolved $test1
    return
}

global ld
global link_output

if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1a.o tmpdir/common1b.o"] } {
    unresolved $test1w1
    return
}

# This test fails on MIPS because the backend sets type_change_ok.
# The size change warning is suppressed.
if {[istarget mips*-*-*]} {
    if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
        fail $test1w1
    } else {
        pass $test1w1
    }
} else {
    if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output]
         || ![regexp "Warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } {
        fail $test1w1
    } else {
        pass $test1w1
    }
}

if { [dump_common1 $test1c1] } {
    pass $test1c1
}

if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1b.o tmpdir/common1a.o"] } {
    unresolved $test1w2
    return
}

if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
    fail $test1w2
} else {
    pass $test1w2
}

if { [dump_common1 $test1c2] } {
    pass $test1c2
}

#
# The following tests are for when we are generating STT_COMMON symbols only.
#

if { ![assembler_generates_commons] } {
    return
}

stt_common_test "-static -e 0" "static link of common symbols"
stt_common_test "-shared"      "shared link of common symbols"
stt_common_test "-pie"         "position independent link of common symbols"