ld/testsuite/ld-undefined/weak-undef.exp

   1 # Test handling of weak undefined symbols
   2 #   Copyright 2001, 2002, 2004
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program; if not, write to the Free Software
  17 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
  18
  19 set testname "weak undefined symbols"
  20
  21 # This test only works for ELF targets.  It ought to work for some
  22 # a.out targets, but it doesn't.
  23
  24 if { ![istarget *-*-sysv4*] \
  25      && ![istarget *-*-unixware*] \
  26      && ![istarget *-*-elf*] \
  27      && ![istarget *-*-eabi*] \
  28      && ![istarget hppa*64*-*-hpux*] \
  29      && ![istarget *-*-linux*] \
  30      && ![istarget *-*-irix5*] \
  31      && ![istarget *-*-irix6*] \
  32      && ![is_pecoff_format] \
  33      && ![istarget *-*-solaris2*] } then {
  34     unsupported $testname
  35     return
  36 }
  37
  38 if { [istarget *-*-linux*aout*] \
  39      || [istarget *-*-linux*oldld*] } {
  40     unsupported $testname
  41     return
  42 }
  43
  44 # Weak symbols are broken for non-i386 PE targets.
  45 if {! [istarget i?86-*-*]} {
  46     setup_xfail *-*-pe*
  47 }
  48
  49 setup_xfail hppa64-*-* pj-*-*
  50
  51 if {! [ld_assemble $as $srcdir/$subdir/weak-undef.s tmpdir/weak-undef.o]} then {
  52     # It's OK if .weak doesn't work on this target.
  53     unresolved $testname
  54     return
  55 }
  56
  57 # The linker should accept references to undefined weaks without error,
  58 # and resolve them to zero.
  59
  60 set output_regexp \
  61 ".*Contents of section .data:.*0000 00000000 11111111.*"
  62
  63 if {! [ld_simple_link $ld tmpdir/weak-undef "$flags tmpdir/weak-undef.o -T $srcdir/$subdir/weak-undef.t"] } then {
  64     fail $testname
  65 } else {
  66     if {[which $objdump] == 0} then {
  67         unresolved $testname
  68         return
  69     }
  70
  71     verbose -log "$objdump -s tmpdir/weak-undef"
  72     catch "exec $objdump -s tmpdir/weak-undef" exec_output
  73     set exec_output [prune_warnings $exec_output]
  74     verbose -log $exec_output
  75
  76     if {[regexp $output_regexp $exec_output]} then {
  77         pass $testname
  78     } else {
  79         fail $testname
  80     }
  81 }