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275 lines
8.6 KiB
Plaintext
275 lines
8.6 KiB
Plaintext
# Expect script for linker support of STB_GNU_UNIQUE symbols
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#
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# Copyright (C) 2009-2017 Free Software Foundation, Inc.
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# Contributed by Red Hat.
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#
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# This file is part of the GNU Binutils.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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# MA 02110-1301, USA.
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#
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# Written by Nick Clifton <nickc@redhat.com>
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# Adapted for unique checking by Mark J. Wielaard <mjw@redhat.com>
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# Exclude non-ELF targets.
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if { ![is_elf_format] } {
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return
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}
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# Require STB_GNU_UNIQUE support with OSABI set to GNU.
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if { ![supports_gnu_unique] } {
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verbose "UNIQUE tests not run - target does not support UNIQUE"
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return
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}
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set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
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foreach t $test_list {
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# We need to strip the ".d", but can leave the dirname.
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verbose [file rootname $t]
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run_dump_test [file rootname $t]
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}
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# We need a working compiler. (Strictly speaking this is
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# not true, we could use target specific assembler files).
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if { [which $CC] == 0 } {
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verbose "UNIQUE compiled tests not run - no compiler available"
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return
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}
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# A procedure to check the OS/ABI field in the ELF header of a binary file.
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proc check_osabi { binary_file expected_osabi } {
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global READELF
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global READELFFLAGS
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catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got
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if ![string match "" $got] then {
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verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got"
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return 0
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}
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if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \
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[file_contents readelf.out] nil osabi] } {
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verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file"
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return 0
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}
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if { $osabi == $expected_osabi } {
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return 1
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}
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verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi"
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return 0
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}
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# A procedure to confirm that a file contains the UNIQUE symbol.
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# Returns -1 upon error, 0 if the symbol was not found and 1 if it was found.
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proc contains_unique_symbol { binary_file } {
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global READELF
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global READELFFLAGS
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catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got
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if ![string match "" $got] then {
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verbose "proc contains_unique_symbol: Readelf produced unexpected out processing $binary_file: $got"
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return -1
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}
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# Look for a line like this:
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# 54: 0000000000400474 4 OBJECT UNIQUE DEFAULT 13 a
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if { ![regexp ".*\[ \]*OBJECT\[ \]+UNIQUE\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+\[ab\]\n" [file_contents readelf.out]] } {
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return 0
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}
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return 1
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}
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set fails 0
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# Create object file containing unique symbol.
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if ![ld_compile "$CC -c" "$srcdir/$subdir/unique.s" "tmpdir/unique.o"] {
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fail "Could not create a unique object"
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set fails [expr $fails + 1]
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}
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# Create object file NOT containing unique symbol.
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if ![ld_compile "$CC -c" "$srcdir/$subdir/unique_empty.s" "tmpdir/unique_empty.o"] {
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fail "Could not create a non-unique object"
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set fails [expr $fails + 1]
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}
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# When using GCC as the linker driver, we need to specify board cflags when
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# linking because cflags may contain linker options. For example when linker
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# options are included in GCC spec files then we need the -specs option.
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if [board_info [target_info name] exists cflags] {
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set board_cflags " [board_info [target_info name] cflags]"
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} else {
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set board_cflags ""
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}
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# Create executable containing unique symbol.
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if ![ld_link "$CC $board_cflags" "tmpdir/unique_prog" "tmpdir/unique.o"] {
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fail "Could not link a unique executable"
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set fails [expr $fails + 1]
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}
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if { $fails != 0 } {
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return
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}
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# Check the object file.
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if {! [check_osabi tmpdir/unique.o {UNIX - GNU}]} {
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fail "Object containing unique does not have an OS/ABI field of GNU"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/unique.o] != 1} {
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fail "Object containing unique does not contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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if { $fails == 0 } {
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pass "Checking unique object"
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}
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# Check the executable.
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if {! [check_osabi tmpdir/unique_prog {UNIX - GNU}]} {
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fail "Executable containing unique does not have an OS/ABI field of GNU"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/unique_prog] != 1} {
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fail "Executable containing unique does not contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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if { $fails == 0 } {
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pass "Checking unique executable"
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}
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# Check the empty object file.
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case $target_triplet in {
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{ hppa*-*-linux* } { set expected_none {UNIX - GNU} }
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default { set expected_none {UNIX - System V} }
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}
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if {! [check_osabi tmpdir/unique_empty.o $expected_none]} {
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fail "Object NOT containing unique does not have an OS/ABI field of $expected_none"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/unique_empty.o] == 1} {
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fail "Object NOT containing unique does contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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if { $fails == 0 } {
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pass "Checking empty unique object"
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}
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# ------------------------------------------------------------------------------
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# Only shared library tests below.
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# ------------------------------------------------------------------------------
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if { ![check_shared_lib_support] } {
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return
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}
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# Create pic object file containing unique symbol.
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if {![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/unique_shared.s" "tmpdir/unique_shared.o"] } {
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fail "Could not create a pic unique object"
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set fails [expr $fails + 1]
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}
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# Create shared library containing unique symbol.
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if {![ld_link $ld "tmpdir/libunique_shared.so" "-shared tmpdir/unique_shared.o"] } {
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fail "Could not create a shared library containing an unique symbol"
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set fails [expr $fails + 1]
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}
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# Create executable NOT containing unique symbol linked against library.
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if {![ld_link "$CC $board_cflags" "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_empty.o -Wl,-Bdynamic,-rpath=./tmpdir -lunique_shared"] } {
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fail "Could not link a dynamic executable"
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set fails [expr $fails + 1]
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}
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# Create shared library containing unique symbol with reference.
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if {![ld_link $ld "tmpdir/libunique_shared_ref.so" "-shared tmpdir/unique_shared.o tmpdir/unique_empty.o"] } {
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fail "Could not create a shared library containing an unique symbol with reference"
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set fails [expr $fails + 1]
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}
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if { $fails != 0 } {
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return
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}
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# Check the unique PIC file.
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if {! [check_osabi tmpdir/unique_shared.o {UNIX - GNU}]} {
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fail "PIC Object containing unique does not have an OS/ABI field of GNU"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/unique_shared.o] != 1} {
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fail "PIC Object containing unique does not contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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if { $fails == 0 } {
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pass "Checking unique PIC object"
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}
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# Check the unique shared library.
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if {! [check_osabi tmpdir/libunique_shared.so {UNIX - GNU}]} {
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fail "Shared library containing unique does not have an OS/ABI field of GNU"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} {
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fail "Shared library containing unique does not contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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# Check the unique shared library with reference.
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if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} {
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fail "Shared library containing unique with reference does not have an OS/ABI field of GNU"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} {
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fail "Shared library containing unique with reference does not contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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if { $fails == 0 } {
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pass "Checking unique PIC object"
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}
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# Check the empty executable linked against unique shared library.
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if {! [check_osabi tmpdir/unique_shared_prog $expected_none]} {
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fail "Executable NOT containing unique does not have an OS/ABI field of $expected_none"
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set fails [expr $fails + 1]
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}
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if {[contains_unique_symbol tmpdir/unique_shared_prog] == 1} {
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fail "Executable NOT containing unique does contain an UNIQUE symbol"
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set fails [expr $fails + 1]
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}
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if { $fails == 0 } {
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pass "Checking shared empty executable"
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}
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