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- # Expect script for linker support of STB_GNU_UNIQUE symbols
- #
- # Copyright (C) 2009-2022 Free Software Foundation, Inc.
- # Contributed by Red Hat.
- #
- # 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 Nick Clifton <nickc@redhat.com>
- # Adapted for unique checking by Mark J. Wielaard <mjw@redhat.com>
- # Exclude non-ELF targets.
- if { ![is_elf_format] } {
- return
- }
- # Require STB_GNU_UNIQUE support with OSABI set to GNU.
- if { ![supports_gnu_unique] || [istarget tic6x-*-*] } {
- verbose "UNIQUE tests not run - target does not support UNIQUE"
- return
- }
- set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
- foreach t $test_list {
- # We need to strip the ".d", but can leave the dirname.
- verbose [file rootname $t]
- run_dump_test [file rootname $t]
- }
- # We need a working compiler. (Strictly speaking this is
- # not true, we could use target specific assembler files).
- if { ![check_compiler_available] } {
- verbose "UNIQUE compiled tests not run - no compiler available"
- return
- }
- # A procedure to check the OS/ABI field in the ELF header of a binary file.
- proc check_osabi { binary_file expected_osabi } {
- global READELF
- global READELFFLAGS
- catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got
- if ![string match "" $got] then {
- verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got"
- return 0
- }
- if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \
- [file_contents readelf.out] nil osabi] } {
- verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file"
- return 0
- }
- if { $osabi == $expected_osabi } {
- return 1
- }
- verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi"
- return 0
- }
- # A procedure to confirm that a file contains the UNIQUE symbol.
- # Returns -1 upon error, 0 if the symbol was not found and 1 if it was found.
- proc contains_unique_symbol { binary_file } {
- global READELF
- global READELFFLAGS
- catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got
- if ![string match "" $got] then {
- verbose "proc contains_unique_symbol: Readelf produced unexpected out processing $binary_file: $got"
- return -1
- }
- # Look for a line like this:
- # 54: 0000000000400474 4 OBJECT UNIQUE DEFAULT 13 a
- if { ![regexp ".*\[ \]*OBJECT\[ \]+UNIQUE\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+\[ab\]_val\n" [file_contents readelf.out]] } {
- return 0
- }
- return 1
- }
- set fails 0
- # Create object file containing unique symbol.
- if ![ld_compile "$CC_FOR_TARGET -c" "$srcdir/$subdir/unique.s" "tmpdir/unique.o"] {
- fail "Could not create a unique object"
- set fails [expr $fails + 1]
- }
- # Create object file NOT containing unique symbol.
- if ![ld_compile "$CC_FOR_TARGET -c" "$srcdir/$subdir/unique_empty.s" "tmpdir/unique_empty.o"] {
- fail "Could not create a non-unique object"
- set fails [expr $fails + 1]
- }
- # When using GCC as the linker driver, we need to specify board cflags when
- # linking because cflags may contain linker options. For example when linker
- # options are included in GCC spec files then we need the -specs option.
- if [board_info [target_info name] exists cflags] {
- set board_cflags " [board_info [target_info name] cflags]"
- } else {
- set board_cflags ""
- }
- # Create executable containing unique symbol.
- if ![ld_link "$CC_FOR_TARGET $NOPIE_LDFLAGS $board_cflags" "tmpdir/unique_prog" "tmpdir/unique.o"] {
- fail "Could not link a unique executable"
- set fails [expr $fails + 1]
- }
- if { $fails != 0 } {
- return
- }
- # Check the object file.
- if {! [check_osabi tmpdir/unique.o {UNIX - GNU}]} {
- fail "Object containing unique does not have an OS/ABI field of GNU"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/unique.o] != 1} {
- fail "Object containing unique does not contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- if { $fails == 0 } {
- pass "Checking unique object"
- }
- # Check the executable.
- if {! [check_osabi tmpdir/unique_prog {UNIX - GNU}]} {
- fail "Executable containing unique does not have an OS/ABI field of GNU"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/unique_prog] != 1} {
- fail "Executable containing unique does not contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- if { $fails == 0 } {
- pass "Checking unique executable"
- }
- # Check the empty object file.
- switch -glob $target_triplet {
- hppa*-*-linux* { set expected_none {UNIX - GNU} }
- default { set expected_none {UNIX - System V} }
- }
- if {! [check_osabi tmpdir/unique_empty.o $expected_none]} {
- fail "Object NOT containing unique does not have an OS/ABI field of $expected_none"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/unique_empty.o] == 1} {
- fail "Object NOT containing unique does contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- if { $fails == 0 } {
- pass "Checking empty unique object"
- }
- # ------------------------------------------------------------------------------
- # Only shared library tests below.
- # ------------------------------------------------------------------------------
- if { ![check_shared_lib_support] } {
- return
- }
- # Create pic object file containing unique symbol.
- if {![ld_compile "$CC_FOR_TARGET -c -fPIC" "$srcdir/$subdir/unique_shared.s" "tmpdir/unique_shared.o"] } {
- fail "Could not create a pic unique object"
- set fails [expr $fails + 1]
- }
- # Create shared library containing unique symbol.
- if {![ld_link $ld "tmpdir/libunique_shared.so" "-shared tmpdir/unique_shared.o"] } {
- fail "Could not create a shared library containing an unique symbol"
- set fails [expr $fails + 1]
- }
- # Create executable NOT containing unique symbol linked against library.
- if {![ld_link "$CC_FOR_TARGET $NOPIE_LDFLAGS $board_cflags" "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_empty.o -Wl,-Bdynamic,-rpath=./tmpdir -lunique_shared"] } {
- fail "Could not link a dynamic executable"
- set fails [expr $fails + 1]
- }
- # Create shared library containing unique symbol with reference.
- if {![ld_link $ld "tmpdir/libunique_shared_ref.so" "-shared -z notext tmpdir/unique_shared.o tmpdir/unique_empty.o"] } {
- fail "Could not create a shared library containing an unique symbol with reference"
- set fails [expr $fails + 1]
- }
- if { $fails != 0 } {
- return
- }
- # Check the unique PIC file.
- if {! [check_osabi tmpdir/unique_shared.o {UNIX - GNU}]} {
- fail "PIC Object containing unique does not have an OS/ABI field of GNU"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/unique_shared.o] != 1} {
- fail "PIC Object containing unique does not contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- if { $fails == 0 } {
- pass "Checking unique PIC object 1"
- }
- # Check the unique shared library.
- if {! [check_osabi tmpdir/libunique_shared.so {UNIX - GNU}]} {
- fail "Shared library containing unique does not have an OS/ABI field of GNU"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} {
- fail "Shared library containing unique does not contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- # Check the unique shared library with reference.
- if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} {
- fail "Shared library containing unique with reference does not have an OS/ABI field of GNU"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} {
- fail "Shared library containing unique with reference does not contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- if { $fails == 0 } {
- pass "Checking unique PIC object 2"
- }
- # Check the empty executable linked against unique shared library.
- if {! [check_osabi tmpdir/unique_shared_prog $expected_none]} {
- fail "Executable NOT containing unique does not have an OS/ABI field of $expected_none"
- set fails [expr $fails + 1]
- }
- if {[contains_unique_symbol tmpdir/unique_shared_prog] == 1} {
- fail "Executable NOT containing unique does contain an UNIQUE symbol"
- set fails [expr $fails + 1]
- }
- if { $fails == 0 } {
- pass "Checking shared empty executable"
- }
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