ld/testsuite/ld-unique/unique.exp

   1 # Expect script for linker support of STB_GNU_UNIQUE symbols
   2 #
   3 #   Copyright (C) 2009-2021 Free Software Foundation, Inc.
   4 #   Contributed by Red Hat.
   5 #
   6 # This file is part of the GNU Binutils.
   7 #
   8 # This program is free software; you can redistribute it and/or modify
   9 # it under the terms of the GNU General Public License as published by
  10 # the Free Software Foundation; either version 3 of the License, or
  11 # (at your option) any later version.
  12 #
  13 # This program is distributed in the hope that it will be useful,
  14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 # GNU General Public License for more details.
  17 #
  18 # You should have received a copy of the GNU General Public License
  19 # along with this program; if not, write to the Free Software
  20 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 # MA 02110-1301, USA.
  22 #
  23 # Written by Nick Clifton <nickc@redhat.com>
  24 # Adapted for unique checking by Mark J. Wielaard <mjw@redhat.com>
  25
  26
  27 # Exclude non-ELF targets.
  28 if { ![is_elf_format] } {
  29     return
  30 }
  31
  32 # Require STB_GNU_UNIQUE support with OSABI set to GNU.
  33 if { ![supports_gnu_unique] || [istarget tic6x-*-*] } {
  34     verbose "UNIQUE tests not run - target does not support UNIQUE"
  35     return
  36 }
  37
  38 set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
  39 foreach t $test_list {
  40     # We need to strip the ".d", but can leave the dirname.
  41     verbose [file rootname $t]
  42     run_dump_test [file rootname $t]
  43 }
  44
  45 # We need a working compiler.  (Strictly speaking this is
  46 # not true, we could use target specific assembler files).
  47 if { ![check_compiler_available] } {
  48     verbose "UNIQUE compiled tests not run - no compiler available"
  49     return
  50 }
  51
  52 # A procedure to check the OS/ABI field in the ELF header of a binary file.
  53 proc check_osabi { binary_file expected_osabi } {
  54     global READELF
  55     global READELFFLAGS
  56
  57     catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got
  58
  59     if ![string match "" $got] then {
  60         verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got"
  61         return 0
  62     }
  63
  64     if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \
  65            [file_contents readelf.out] nil osabi] } {
  66         verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file"
  67         return 0
  68     }
  69
  70     if { $osabi == $expected_osabi } {
  71         return 1
  72     }
  73
  74     verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi"
  75
  76     return 0
  77 }
  78
  79 # A procedure to confirm that a file contains the UNIQUE symbol.
  80 # Returns -1 upon error, 0 if the symbol was not found and 1 if it was found.
  81 proc contains_unique_symbol { binary_file } {
  82     global READELF
  83     global READELFFLAGS
  84
  85     catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got
  86
  87     if ![string match "" $got] then {
  88         verbose "proc contains_unique_symbol: Readelf produced unexpected out processing $binary_file: $got"
  89         return -1
  90     }
  91
  92     # Look for a line like this:
  93     #    54: 0000000000400474     4 OBJECT  UNIQUE DEFAULT   13 a
  94
  95     if { ![regexp ".*\[ \]*OBJECT\[ \]+UNIQUE\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+\[ab\]_val\n" [file_contents readelf.out]] } {
  96         return 0
  97     }
  98
  99     return 1
 100 }
 101
 102 set fails 0
 103
 104 # Create object file containing unique symbol.
 105 if ![ld_compile "$CC -c" "$srcdir/$subdir/unique.s" "tmpdir/unique.o"] {
 106     fail "Could not create a unique object"
 107     set fails [expr $fails + 1]
 108 }
 109
 110 # Create object file NOT containing unique symbol.
 111 if ![ld_compile "$CC -c" "$srcdir/$subdir/unique_empty.s" "tmpdir/unique_empty.o"] {
 112     fail "Could not create a non-unique object"
 113     set fails [expr $fails + 1]
 114 }
 115
 116 # When using GCC as the linker driver, we need to specify board cflags when
 117 # linking because cflags may contain linker options.  For example when linker
 118 # options are included in GCC spec files then we need the -specs option.
 119 if [board_info [target_info name] exists cflags] {
 120   set board_cflags " [board_info [target_info name] cflags]"
 121 } else {
 122   set board_cflags ""
 123 }
 124
 125 # Create executable containing unique symbol.
 126 if ![ld_link "$CC $NOPIE_LDFLAGS $board_cflags" "tmpdir/unique_prog" "tmpdir/unique.o"] {
 127     fail "Could not link a unique executable"
 128     set fails [expr $fails + 1]
 129 }
 130
 131 if { $fails != 0 } {
 132     return
 133 }
 134
 135 # Check the object file.
 136 if {! [check_osabi tmpdir/unique.o {UNIX - GNU}]} {
 137     fail "Object containing unique does not have an OS/ABI field of GNU"
 138     set fails [expr $fails + 1]
 139 }
 140
 141 if {[contains_unique_symbol tmpdir/unique.o] != 1} {
 142     fail "Object containing unique does not contain an UNIQUE symbol"
 143     set fails [expr $fails + 1]
 144 }
 145
 146 if { $fails == 0 } {
 147   pass "Checking unique object"
 148 }
 149
 150 # Check the executable.
 151 if {! [check_osabi tmpdir/unique_prog {UNIX - GNU}]} {
 152     fail "Executable containing unique does not have an OS/ABI field of GNU"
 153     set fails [expr $fails + 1]
 154 }
 155
 156 if {[contains_unique_symbol tmpdir/unique_prog] != 1} {
 157     fail "Executable containing unique does not contain an UNIQUE symbol"
 158     set fails [expr $fails + 1]
 159 }
 160
 161 if { $fails == 0 } {
 162   pass "Checking unique executable"
 163 }
 164
 165 # Check the empty object file.
 166 switch -glob $target_triplet {
 167     hppa*-*-linux* { set expected_none {UNIX - GNU} }
 168     default { set expected_none {UNIX - System V} }
 169 }
 170 if {! [check_osabi tmpdir/unique_empty.o $expected_none]} {
 171     fail "Object NOT containing unique does not have an OS/ABI field of $expected_none"
 172     set fails [expr $fails + 1]
 173 }
 174
 175 if {[contains_unique_symbol tmpdir/unique_empty.o] == 1} {
 176     fail "Object NOT containing unique does contain an UNIQUE symbol"
 177     set fails [expr $fails + 1]
 178 }
 179
 180 if { $fails == 0 } {
 181   pass "Checking empty unique object"
 182 }
 183
 184 # ------------------------------------------------------------------------------
 185 # Only shared library tests below.
 186 # ------------------------------------------------------------------------------
 187
 188 if { ![check_shared_lib_support] } {
 189     return
 190 }
 191
 192 # Create pic object file containing unique symbol.
 193 if {![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/unique_shared.s" "tmpdir/unique_shared.o"] } {
 194     fail "Could not create a pic unique object"
 195     set fails [expr $fails + 1]
 196 }
 197
 198 # Create shared library containing unique symbol.
 199 if {![ld_link $ld "tmpdir/libunique_shared.so" "-shared tmpdir/unique_shared.o"] } {
 200     fail "Could not create a shared library containing an unique symbol"
 201     set fails [expr $fails + 1]
 202 }
 203
 204 # Create executable NOT containing unique symbol linked against library.
 205 if {![ld_link "$CC $NOPIE_LDFLAGS $board_cflags" "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_empty.o -Wl,-Bdynamic,-rpath=./tmpdir -lunique_shared"] } {
 206     fail "Could not link a dynamic executable"
 207     set fails [expr $fails + 1]
 208 }
 209
 210 # Create shared library containing unique symbol with reference.
 211 if {![ld_link $ld "tmpdir/libunique_shared_ref.so" "-shared -z notext tmpdir/unique_shared.o tmpdir/unique_empty.o"] } {
 212     fail "Could not create a shared library containing an unique symbol with reference"
 213     set fails [expr $fails + 1]
 214 }
 215
 216 if { $fails != 0 } {
 217     return
 218 }
 219
 220 # Check the unique PIC file.
 221 if {! [check_osabi tmpdir/unique_shared.o {UNIX - GNU}]} {
 222     fail "PIC Object containing unique does not have an OS/ABI field of GNU"
 223     set fails [expr $fails + 1]
 224 }
 225
 226 if {[contains_unique_symbol tmpdir/unique_shared.o] != 1} {
 227     fail "PIC Object containing unique does not contain an UNIQUE symbol"
 228     set fails [expr $fails + 1]
 229 }
 230
 231 if { $fails == 0 } {
 232   pass "Checking unique PIC object 1"
 233 }
 234
 235 # Check the unique shared library.
 236 if {! [check_osabi tmpdir/libunique_shared.so {UNIX - GNU}]} {
 237     fail "Shared library containing unique does not have an OS/ABI field of GNU"
 238     set fails [expr $fails + 1]
 239 }
 240
 241 if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} {
 242     fail "Shared library containing unique does not contain an UNIQUE symbol"
 243     set fails [expr $fails + 1]
 244 }
 245
 246 # Check the unique shared library with reference.
 247 if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} {
 248     fail "Shared library containing unique with reference does not have an OS/ABI field of GNU"
 249     set fails [expr $fails + 1]
 250 }
 251
 252 if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} {
 253     fail "Shared library containing unique with reference does not contain an UNIQUE symbol"
 254     set fails [expr $fails + 1]
 255 }
 256
 257 if { $fails == 0 } {
 258   pass "Checking unique PIC object 2"
 259 }
 260
 261 # Check the empty executable linked against unique shared library.
 262 if {! [check_osabi tmpdir/unique_shared_prog $expected_none]} {
 263     fail "Executable NOT containing unique does not have an OS/ABI field of $expected_none"
 264     set fails [expr $fails + 1]
 265 }
 266
 267 if {[contains_unique_symbol tmpdir/unique_shared_prog] == 1} {
 268     fail "Executable NOT containing unique does contain an UNIQUE symbol"
 269     set fails [expr $fails + 1]
 270 }
 271
 272 if { $fails == 0 } {
 273   pass "Checking shared empty executable"
 274 }