ld/testsuite/ld-elfcomm/elfcomm.exp

   1 # Expect script for common symbol tests
   2 #   Copyright (C) 2003-2021 Free Software Foundation, Inc.
   3 #
   4 # This file is part of the GNU Binutils.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19 # MA 02110-1301, USA.
  20 #
  21 # Written by H.J. Lu (hjl@gnu.org)
  22 #
  23
  24 # Make sure that ld correctly handles common symbols in ELF.
  25
  26 # This test can only be run on ELF platforms.
  27 if ![is_elf_format] {
  28     return
  29 }
  30
  31 # hpux assembly is weird
  32 if [istarget "hppa*-*-hpux*"] {
  33     return
  34 }
  35
  36 proc test_sort_common {} {
  37     global exec_output
  38     global objdump
  39     global srcdir
  40     global subdir
  41     global as
  42     global ld
  43
  44     set test "--sort-common (descending)"
  45
  46     verbose "Check to see that --sort-common sorts in descending alignment"
  47
  48     # We do not run the sort common tests for the DLX target because we know that the linker
  49     # will seg-fault.  The built-in DLX linker script requires that there be something in the
  50     # .text section and our sort-common.s file does not provide anything.
  51     if [istarget dlx-*-*] {
  52         untested "$test"
  53         return 0
  54     }
  55
  56     if { ![ld_assemble $as $srcdir/$subdir/sort-common.s tmpdir/sort-common.o] } {
  57         unresolved "$test"
  58         return 0
  59     }
  60
  61     if { ![ld_link $ld tmpdir/sort-common.dx "--sort-common=descending tmpdir/sort-common.o"] } {
  62         fail "$test (could not link)"
  63         return 0
  64     }
  65
  66     send_log "$objdump --syms tmpdir/sort-common.dx | grep var | sort\n"
  67     set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.dx | grep var | sort"]
  68
  69     # Don't know why, but the CR ports fail this test.
  70     setup_xfail "cr16-*-*" "crx-*-*"
  71
  72     # Note: The second regexp is for targets which put small commons in a .sbss
  73     #  section and large commons in a .bss section.
  74     if {   ![regexp ".*var_16.*var_8.*var_4.*var_2.*var_1.*" $exec_output]
  75         && ![regexp ".*sbss.*var_8.*var_4.*var_2.*var_1.*bss.*var_16.*" $exec_output] } {
  76         fail "$test (variables in wrong order)"
  77     } else {
  78         pass $test
  79     }
  80
  81     set test "--sort-common (ascending)"
  82
  83     verbose "Check to see that --sort-common=ascending sorts in ascending alignment"
  84
  85     if { ![ld_link $ld tmpdir/sort-common.ax "--sort-common=ascending tmpdir/sort-common.o"] } {
  86         fail "$test (could not link)"
  87         return 0
  88     }
  89
  90     send_log "$objdump --syms tmpdir/sort-common.ax | grep var | sort\n"
  91     set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.ax | grep var | sort"]
  92
  93     if {![regexp ".*var_1.*var_2.*var_4.*var_8.*var_16.*" $exec_output]} {
  94         fail "$test (variables in wrong order)"
  95         return 0
  96     }
  97
  98     pass $test
  99     return 1
 100 }
 101
 102 test_sort_common
 103
 104 set test1       "size/alignment change of common symbols"
 105 set test1w1     "$test1 (warning 1)"
 106 set test1w2     "$test1 (warning 2)"
 107 set test1c1     "$test1 (change 1)"
 108 set test1c2     "$test1 (change 2)"
 109
 110 if { ![check_compiler_available] } {
 111     untested $test1w1
 112     untested $test1w2
 113     untested $test1c1
 114     untested $test1c2
 115     return
 116 }
 117 if { [istarget score-*-*] } {
 118     untested $test1w1
 119     untested $test1w2
 120     untested $test1c1
 121     untested $test1c2
 122     return
 123 }
 124
 125 proc dump_common1 { testname } {
 126     global exec_output
 127     global READELF
 128
 129     send_log "$READELF --syms tmpdir/common1.o | grep foo\n"
 130     set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1.o | grep foo"]
 131
 132     if {   ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+)4(\[        \]+)(COMMON|OBJECT)(\[  \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output]
 133         || ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)21(\[       \]+)OBJECT(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo1" $exec_output] } {
 134         verbose $exec_output
 135         fail $testname
 136         return 0
 137     }
 138
 139     return 1
 140 }
 141
 142 proc stt_common_test { options testname } {
 143     global exec_output
 144     global READELF
 145     global ld
 146
 147     set options "$options tmpdir/common1c.o"
 148
 149     if { ! [ld_link $ld tmpdir/common.exe $options] } {
 150       unresolved $testname
 151       return 0
 152     }
 153
 154     send_log "$READELF --syms tmpdir/common.exe | grep foo\n"
 155     set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common.exe | grep foo"]
 156
 157     if {![regexp { +[0-9a-f]+. +[0-9a-f]+ OBJECT + GLOBAL +DEFAULT +[0-9]+ _?foo2} $exec_output] } {
 158         fail $testname
 159         return 0
 160     }
 161
 162     pass $testname
 163     return 1
 164 }
 165
 166 if [istarget nios2*-*-*] {
 167     set CFLAGS "$CFLAGS -G0"
 168 }
 169
 170 # Explicitly use "-fcommon" so that even if $CFLAGS includes
 171 # "-fno-common", these tests are compiled as expected.
 172 if {   ![ld_compile "$CC $CFLAGS -fcommon $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" $srcdir/$subdir/common1a.c tmpdir/common1a.o]
 173     || ![ld_compile "$CC $CFLAGS -fcommon $NOSANITIZE_CFLAGS $NOLTO_CFLAGS" $srcdir/$subdir/common1b.c tmpdir/common1b.o]
 174     || ![ld_compile "$CC $CFLAGS $NOSANITIZE_CFLAGS $NOLTO_CFLAGS -Wa,--elf-stt-common=yes -fcommon" $srcdir/$subdir/common1b.c tmpdir/common1c.o] } {
 175     unresolved $test1
 176     unresolved $test1
 177     return
 178 }
 179
 180 set options "-r tmpdir/common1a.o tmpdir/common1b.o"
 181
 182 if { [ld_link $ld tmpdir/common1.o $options] } {
 183     unresolved $test1w1
 184     return
 185 }
 186
 187 # This test fails on MIPS because the backend sets type_change_ok.
 188 # The size change warning is suppressed.  Same on hppa64.
 189 if {[istarget mips*-*-*] || [istarget hppa*64*-*-*]} {
 190     if { ![regexp "warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
 191         fail $test1w1
 192     } else {
 193         pass $test1w1
 194     }
 195 } else {
 196     if { ![regexp "warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output]
 197          || ![regexp "warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } {
 198         fail $test1w1
 199     } else {
 200         pass $test1w1
 201     }
 202 }
 203
 204 if { [dump_common1 $test1c1] } {
 205     pass $test1c1
 206 }
 207
 208 set options "-r tmpdir/common1b.o tmpdir/common1a.o"
 209
 210 if { [ld_link $ld tmpdir/common1.o $options] } {
 211     unresolved $test1w2
 212     return
 213 }
 214
 215 if { ![regexp "warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
 216     fail $test1w2
 217 } else {
 218     pass $test1w2
 219 }
 220
 221 if { [dump_common1 $test1c2] } {
 222     pass $test1c2
 223 }
 224
 225 #
 226 # The following tests are for when we are generating STT_COMMON symbols only.
 227 #
 228 # Handling of -z common and -z nocommon flags is enabled only if
 229 # $GENERATE_SHLIB_SCRIPT is turned on in emulparams i.e. shared
 230 # libraries are supported.
 231
 232 if ![check_shared_lib_support]  {
 233     return
 234 }
 235
 236 stt_common_test "-static -e 0" "static link of common symbols"
 237 stt_common_test "-shared"      "shared link of common symbols"
 238 stt_common_test "-pie"         "position independent link of common symbols"
 239
 240 run_ld_link_tests [list \
 241   [list \
 242     "Build common-3x.o" \
 243      "-r" "" "--elf-stt-common=no" \
 244      {common-1.s} {} "common-3x.o" \
 245   ] \
 246   [list \
 247     "Build common-3y.o" \
 248      "-r" "" "--elf-stt-common=yes" \
 249      {common-1.s} {} "common-3y.o" \
 250   ] \
 251   [list \
 252     "Build common-3a.o" \
 253     "-r tmpdir/common-3x.o tmpdir/common-3y.o" "" "" \
 254     {dummy.s} {{readelf {-s -W} common-3a.rd}} "common-3a.o" \
 255   ] \
 256   [list \
 257     "Build common-3b.o" \
 258     "-r tmpdir/common-3y.o tmpdir/common-3x.o" "" "" \
 259     {dummy.s} {{readelf {-s -W} common-3b.rd}} "common-3b.o" \
 260   ] \
 261   [list \
 262     "Build common-3c.o" \
 263     "-r -z nocommon tmpdir/common-3x.o tmpdir/common-3y.o" "" "" \
 264     {dummy.s} {{readelf {-s -W} common-3a.rd}} "common-3c.o" \
 265   ] \
 266   [list \
 267     "Build common-3d.o" \
 268     "-r -z common tmpdir/common-3x.o tmpdir/common-3y.o" "" "" \
 269     {dummy.s} {{readelf {-s -W} common-3b.rd}} "common-3b.o" \
 270   ] \
 271   [list \
 272     "Build common-3e.o" \
 273     "-r -z common tmpdir/common-3y.o tmpdir/common-3x.o" "" "" \
 274     {dummy.s} {{readelf {-s -W} common-3b.rd}} "common-3e.o" \
 275   ] \
 276   [list \
 277     "Build common-3f.o" \
 278     "-r -z nocommon tmpdir/common-3y.o tmpdir/common-3x.o" "" "" \
 279     {dummy.s} {{readelf {-s -W} common-3a.rd}} "common-3f.o" \
 280   ] \
 281 ]
 282
 283 set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
 284 foreach t $test_list {
 285     # We need to strip the ".d", but can leave the dirname.
 286     verbose [file rootname $t]
 287     run_dump_test [file rootname $t]
 288 }