ld/testsuite/ld-unique/unique.exp

   1 # Expect script for linker support of STB_GNU_UNIQUE symbols
   2 #
   3 #   Copyright (C) 2009-2015 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 # STB_GNU_UNIQUE support has only been implemented for the ix86, x86_64,
  28 # arm, powerpc, and sparc so far.
  29 if {!(([istarget "i?86-*-*"]
  30        || [istarget "x86_64-*-*"]
  31        || [istarget "arm*-*-*"]
  32        || [istarget "powerpc*-*-*"]
  33        || [istarget "sparc*-*-*"])
  34       && ([istarget "*-*-elf*"]
  35           || [istarget "*-*-nacl*"]
  36           || (([istarget "*-*-linux*"]
  37                || [istarget "*-*-gnu*"])
  38               && ![istarget "*-*-*aout*"]
  39               && ![istarget "*-*-*oldld*"]))) } {
  40     verbose "UNIQUE tests not run - target does not support UNIQUE"
  41     return
  42 }
  43
  44 # We need a native system.  FIXME: Strictly speaking this
  45 # is not true, we just need to know how to create a fully
  46 # linked executable, including the C and Z libraries, using
  47 # the linker that is under test.
  48 if ![isnative] {
  49     verbose "UNIQUE tests not run - not a native toolchain"
  50     return
  51 }
  52
  53 # We need a working compiler.  (Strictly speaking this is
  54 # not true, we could use target specific assembler files).
  55 if { [which $CC] == 0 } {
  56     verbose "UNIQUE tests not run - no compiler available"
  57     return
  58 }
  59
  60 # A procedure to check the OS/ABI field in the ELF header of a binary file.
  61 proc check_osabi { binary_file expected_osabi } {
  62     global READELF
  63     global READELFFLAGS
  64
  65     catch "exec $READELF $READELFFLAGS --file-header $binary_file > readelf.out" got
  66
  67     if ![string match "" $got] then {
  68         verbose "proc check_osabi: Readelf produced unexpected out processing $binary_file: $got"
  69         return 0
  70     }
  71
  72     if { ![regexp "\n\[ \]*OS/ABI:\[ \]*(.+)\n\[ \]*ABI" \
  73            [file_contents readelf.out] nil osabi] } {
  74         verbose "proc check_osabi: Readelf failed to extract an ELF header from $binary_file"
  75         return 0
  76     }
  77
  78     if { $osabi == $expected_osabi } {
  79         return 1
  80     }
  81
  82     verbose "Expected OSABI: $expected_osabi, Obtained osabi: $osabi"
  83
  84     return 0
  85 }
  86
  87 # A procedure to confirm that a file contains the UNIQUE symbol.
  88 # Returns -1 upon error, 0 if the symbol was not found and 1 if it was found.
  89 proc contains_unique_symbol { binary_file } {
  90     global READELF
  91     global READELFFLAGS
  92
  93     catch "exec $READELF $READELFFLAGS --symbols $binary_file > readelf.out" got
  94
  95     if ![string match "" $got] then {
  96         verbose "proc contains_unique_symbol: Readelf produced unexpected out processing $binary_file: $got"
  97         return -1
  98     }
  99
 100     # Look for a line like this:
 101     #    54: 0000000000400474     4 OBJECT  UNIQUE DEFAULT   13 a
 102
 103     if { ![regexp ".*\[ \]*OBJECT\[ \]+UNIQUE\[ \]+DEFAULT\[ \]+\[UND0-9\]+\[ \]+\[ab\]\n" [file_contents readelf.out]] } {
 104         return 0
 105     }
 106
 107     return 1
 108 }
 109
 110 set fails 0
 111
 112 # Create object file containing unique symbol.
 113 if ![ld_compile "$CC -c" "$srcdir/$subdir/unique.s" "tmpdir/unique.o"] {
 114     fail "Could not create a unique object"
 115     set fails [expr $fails + 1]
 116 }
 117
 118 # Create object file NOT containing unique symbol.
 119 if ![ld_compile "$CC -c" "$srcdir/$subdir/unique_empty.s" "tmpdir/unique_empty.o"] {
 120     fail "Could not create a non-unique object"
 121     set fails [expr $fails + 1]
 122 }
 123
 124 # Create pic object file containing unique symbol.
 125 if ![ld_compile "$CC -c -fPIC" "$srcdir/$subdir/unique_shared.s" "tmpdir/unique_shared.o"] {
 126     fail "Could not create a pic unique object"
 127     set fails [expr $fails + 1]
 128 }
 129
 130 # Create executable containing unique symbol.
 131 if ![default_ld_link $ld "tmpdir/unique_prog" "tmpdir/unique.o"] {
 132     fail "Could not link a unique executable"
 133     set fails [expr $fails + 1]
 134 }
 135
 136 # Create shared library containing unique symbol.
 137 if ![ld_simple_link $ld "tmpdir/libunique_shared.so" "-shared tmpdir/unique_shared.o"] {
 138     fail "Could not create a shared library containing an unique symbol"
 139     set fails [expr $fails + 1]
 140 }
 141
 142 # Create executable NOT containing unique symbol linked against library.
 143 if ![default_ld_link $ld "tmpdir/unique_shared_prog" "-Ltmpdir tmpdir/unique_empty.o -Bdynamic -lunique_shared -rpath ./tmpdir"] {
 144     fail "Could not link a dynamic executable"
 145     set fails [expr $fails + 1]
 146 }
 147
 148 # Create shared library containing unique symbol with reference.
 149 if ![ld_simple_link $ld "tmpdir/libunique_shared_ref.so" "-shared tmpdir/unique_shared.o tmpdir/unique_empty.o"] {
 150     fail "Could not create a shared library containing an unique symbol with reference"
 151     set fails [expr $fails + 1]
 152 }
 153
 154 if { $fails != 0 } {
 155     return
 156 }
 157
 158 # Check the object file.
 159 if {! [check_osabi tmpdir/unique.o {UNIX - GNU}]} {
 160     fail "Object containing unique does not have an OS/ABI field of GNU"
 161     set fails [expr $fails + 1]
 162 }
 163
 164 if {[contains_unique_symbol tmpdir/unique.o] != 1} {
 165     fail "Object containing unique does not contain an UNIQUE symbol"
 166     set fails [expr $fails + 1]
 167 }
 168
 169 if { $fails == 0 } {
 170   pass "Checking unique object"
 171 }
 172
 173 # Check the executable.
 174 if {! [check_osabi tmpdir/unique_prog {UNIX - GNU}]} {
 175     fail "Executable containing unique does not have an OS/ABI field of GNU"
 176     set fails [expr $fails + 1]
 177 }
 178
 179 if {[contains_unique_symbol tmpdir/unique_prog] != 1} {
 180     fail "Executable containing unique does not contain an UNIQUE symbol"
 181     set fails [expr $fails + 1]
 182 }
 183
 184 if { $fails == 0 } {
 185   pass "Checking unique executable"
 186 }
 187
 188 # Check the empty object file.
 189 if {! [check_osabi tmpdir/unique_empty.o {UNIX - System V}]} {
 190     fail "Object NOT containing unique does not have an OS/ABI field of System V"
 191     set fails [expr $fails + 1]
 192 }
 193
 194 if {[contains_unique_symbol tmpdir/unique_empty.o] == 1} {
 195     fail "Object NOT containing unique does contain an UNIQUE symbol"
 196     set fails [expr $fails + 1]
 197 }
 198
 199 if { $fails == 0 } {
 200   pass "Checking empty unique object"
 201 }
 202
 203 # Check the unique PIC file.
 204 if {! [check_osabi tmpdir/unique_shared.o {UNIX - GNU}]} {
 205     fail "PIC Object containing unique does not have an OS/ABI field of GNU"
 206     set fails [expr $fails + 1]
 207 }
 208
 209 if {[contains_unique_symbol tmpdir/unique_shared.o] != 1} {
 210     fail "PIC Object containing unique does not contain an UNIQUE symbol"
 211     set fails [expr $fails + 1]
 212 }
 213
 214 if { $fails == 0 } {
 215   pass "Checking unique PIC object"
 216 }
 217
 218 # Check the unique shared library.
 219 if {! [check_osabi tmpdir/libunique_shared.so {UNIX - GNU}]} {
 220     fail "Shared library containing unique does not have an OS/ABI field of GNU"
 221     set fails [expr $fails + 1]
 222 }
 223
 224 if {[contains_unique_symbol tmpdir/libunique_shared.so] != 1} {
 225     fail "Shared library containing unique does not contain an UNIQUE symbol"
 226     set fails [expr $fails + 1]
 227 }
 228
 229 # Check the unique shared library with reference.
 230 if {! [check_osabi tmpdir/libunique_shared_ref.so {UNIX - GNU}]} {
 231     fail "Shared library containing unique with reference does not have an OS/ABI field of GNU"
 232     set fails [expr $fails + 1]
 233 }
 234
 235 if {[contains_unique_symbol tmpdir/libunique_shared_ref.so] != 1} {
 236     fail "Shared library containing unique with reference does not contain an UNIQUE symbol"
 237     set fails [expr $fails + 1]
 238 }
 239
 240 if { $fails == 0 } {
 241   pass "Checking unique PIC object"
 242 }
 243
 244 # Check the empty executable linked against unique shared library.
 245 if {! [check_osabi tmpdir/unique_shared_prog {UNIX - System V}]} {
 246     fail "Executable NOT containing unique does not have an OS/ABI field of System V"
 247     set fails [expr $fails + 1]
 248 }
 249
 250 if {[contains_unique_symbol tmpdir/unique_shared_prog] == 1} {
 251     fail "Executable NOT containing unique does contain an UNIQUE symbol"
 252     set fails [expr $fails + 1]
 253 }
 254
 255 if { $fails == 0 } {
 256   pass "Checking shared empty executable"
 257 }
 258
 259 # Clean up, unless we are being verbose, in which case we leave the files available.
 260 if { $verbose < 1 } {
 261     remote_file host delete "tmpdir/unique_empty.o"
 262     remote_file host delete "tmpdir/unique.o"
 263     remote_file host delete "tmpdir/unique_shared.o"
 264     remote_file host delete "tmpdir/libunique_shared.so"
 265     remote_file host delete "tmpdir/libunique_shared_ref.so"
 266     remote_file host delete "tmpdir/unique_prog"
 267     remote_file host delete "tmpdir/unique_shared_prog"
 268 }