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# Expect script for LD selective linking tests

#   Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009,

#   2010, 2011 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 Catherine Moore (clm@cygnus.com)

# Make sure that constructors are handled correctly.

# Only ELF based ports support selective linking

if { ![is_elf_format] || ![check_gc_sections_available] } {

    return

}

# List contains test-items with three items followed by four lists:

# 1:name 2:test-type (CC or C++; add as needed) 3:filename 4:ld-flags

# 5:must-have-symbols 6:must-not-have-symbols 7:xfail-targets.

#

# If a must(-not)-have symbol is a list, then that list must have two

# items; the symbol name and a value the symbol must (not) have.

#

# Note: ld_nm trims leading `_' from _start

#

# FIXME: Instead of table, read settings from each source-file.

set seltests {

  {selective1 C   1.c  {}       {}    {dropme1 dropme2} {}}

  {selective2 C   2.c  {}       {}    {foo} {}}

  {selective3 C   2.c  {-u foo} {foo} {{foo 0}} {}}

  {selective4 C++ 3.cc {}       {start a A::foo() B::foo()} {A::bar()} {mips*-*}}

  {selective5 C++ 4.cc {}       {start a A::bar()} {A::foo() B::foo()} {mips*-*}}

  {selective6 C++ 5.cc {}       {start a A::bar()}

    {A::foo() B::foo() dropme1() dropme2()} {*-*-*}}

}

set cflags "-w -O -ffunction-sections -fdata-sections"

set cxxflags "-fno-exceptions -fno-rtti"

set ldflags "--gc-sections -Bstatic"

if [istarget mips*-*] {

    # MIPS16 doesn't support PIC code.

    set cflags "-mno-abicalls $cflags"

    # MIPS ELF uses __start by default, we override it.

    set ldflags "-e _start $ldflags"

}

if [istarget sh64*-*-elf] {

    # This is what gcc passes to ld by default, plus switch to the

    # "usual" ELF _start (shelf32 normally uses just `start' for COFF

    # compatibility)

    set ldflags "-e _start -mshelf32 $ldflags"

}

# If we don't have g++ for the target, mark all tests as untested.

if { ![is_remote host] && [which $CXX] == 0 } {

    foreach testitem $seltests {

        untested "[lindex $testitem 0]"

    }

    return

}

foreach testitem $seltests {

    set testname [lindex $testitem 0]

    set testtype [lindex $testitem 1]

    set testfile [lindex $testitem 2]

    set objfile "tmpdir/[file rootname $testfile].o"

    set ldfile "tmpdir/[file rootname $testfile].x"

    set failed 0

    set ldargs [lindex $testitem 3]

    set mustsyms [lindex $testitem 4]

    set mustnotsyms [lindex $testitem 5]

    set xfails [lindex $testitem 6]

    foreach xfail_target $xfails {

        setup_xfail $xfail_target

    }

    # It's either C or C++ at the moment.

    if { $testtype == "C++" } {

        set compiler "$CXX"

        # Starting with 3.4.0, -fvtable-gc is no longer supported and thus

        # the functionality we try to test for cannot be expected to work.

        set version [remote_exec host "$CXX -dumpversion"]

        set version [lindex $version 1]

        if [regexp "^(\[1-9\]\[0-9\]+|\[4-9\]|3.(\[1-9\]\[0-9\]+|\[4-9\]))\\." $version] {

            set testflags "$cflags $cxxflags"

            setup_xfail {*-*-*}

        } else {

            set testflags "$cflags $cxxflags -fvtable-gc"

        }

    } else {

        set testflags "$cflags"

        set compiler "$CC"

    }

    # Note that we do not actually *use* CXX; we just add cxxflags for C++

    # tests.  It might have been a buglet originally; now I think better

    # leave as is.

    if { ![ld_compile "$compiler $testflags" $srcdir/$subdir/$testfile $objfile] } {

        unresolved $testname

        continue

    }

    # V850 targets need libgcc.a

    if [istarget v850*-*-elf] {

        set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]

        set libgcc [lindex $libgcc 1]

        regsub -all "\[\r\n\]" $libgcc "" libgcc

        set objfile "$objfile $libgcc"

    }

    # ARM targets need libgcc.a in THUMB mode so that __call_via_r3 is provided

    if {[istarget arm-*-*]} {

        set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]

        set libgcc [lindex $libgcc 1]

        regsub -all "\[\r\n\]" $libgcc "" libgcc

        set objfile "$objfile $libgcc"

    }

    # HPPA linux targets need libgcc.a for millicode routines ($$dyncall).

    if [istarget hppa*-*-linux*] {

        set libgcc [remote_exec host "$compiler -print-libgcc-file-name"]

        set libgcc [lindex $libgcc 1]

        regsub -all "\[\r\n\]" $libgcc "" libgcc

        set objfile "$objfile $libgcc"

    }

    # m6811/m6812 code has references to soft registers.

    if {[istarget m6811-*-*] || [istarget m6812-*-*] || [istarget m68hc1*-*-*]} {

        set objfile "$objfile --defsym _.frame=0 --defsym _.d1=0"

        set objfile "$objfile --defsym _.d2=0"

    }

    if ![ld_simple_link $ld $ldfile "$ldflags [join $ldargs] $objfile"] {

        fail $testname

        continue

    }

    if ![ld_nm $nm --demangle $ldfile] {

        unresolved $testname

        continue

    }

    # Must make V2 demangled names look like V3

    foreach nm_output_key [array names nm_output] {

        if [regsub \\(void\\) $nm_output_key () new_nm_output_key] {

            set nm_output($new_nm_output_key) nm_output($nm_output_key)

        }

    }

    # Check each mandated symbol and optionally mandated values.

    foreach mustsym $mustsyms {

        if { [llength [concat $mustsym]] == 1 } {

            if { ![info exists nm_output($mustsym)] } {

                verbose -log "$testname: missing $mustsym"

                fail $testname

                set failed 1

                break

            }

        } {

            set mustsymname [lindex $mustsym 0]

            set mustsymvalue [lindex $mustsym 1]

            if { ![info exists nm_output($mustsymname)] } {

                verbose -log "$testname: missing $mustsymname"

                fail $testname

                set failed 1

                break

            } {

                if { $nm_output($mustsymname) != $mustsymvalue } {

                    verbose -log "$testname: $mustsymname != $mustsymvalue"

                    verbose -log "is instead $nm_output($mustsymname)"

                    fail $testname

                    set failed 1

                    break

                }

            }

        }

    }

    if { $failed != 0 } {

        continue

    }

    # Check each unwanted symbol, or that symbols do not have specific

    # values.

    foreach mustnotsym $mustnotsyms {

        if { [llength [concat $mustnotsym]] == 1 } {

            if { [info exists nm_output($mustnotsym)] } {

                verbose -log "$testname: $mustnotsym == $nm_output($mustnotsym)"

                fail $testname

                set failed 1

                break

            }

        } {

            set mustnotsymname [lindex $mustnotsym 0]

            set mustnotsymvalue [lindex $mustnotsym 1]

            if { [info exists nm_output($mustnotsymname)] \

                    && $nm_output($mustnotsymname) == $mustnotsymvalue} {

                verbose -log "$testname: $mustnotsymname == $mustnotsymvalue"

                fail $testname

                set failed 1

                break

            }

        }

    }

    if { $failed == 0 } {

        pass $testname

    }

}