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      1 # Test handling of weak undefined symbols
      2 #   Copyright (C) 2001-2014 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 set testname "weak undefined symbols"
     22 
     23 # This test only works for ELF targets.  It ought to work for some
     24 # a.out targets, but it doesn't.
     25 
     26 if { ![istarget *-*-sysv4*] \
     27      && ![istarget *-*-unixware*] \
     28      && ![istarget *-*-elf*] \
     29      && ![istarget *-*-eabi*] \
     30      && ![istarget hppa*64*-*-hpux*] \
     31      && ![istarget *-*-linux*] \
     32      && ![istarget *-*-gnu*] \
     33      && ![istarget *-*-nacl*] \
     34      && ![istarget *-*-irix5*] \
     35      && ![istarget *-*-irix6*] \
     36      && ![is_pecoff_format] \
     37      && ![istarget *-*-solaris2*] } then {
     38     unsupported $testname
     39     return
     40 }
     41 
     42 if { [istarget *-*-linux*aout*] \
     43      || [istarget *-*-linux*oldld*] } {
     44     unsupported $testname
     45     return
     46 }
     47 
     48 # Weak symbols are broken for non-i386 PE targets.
     49 if {! [istarget i?86-*-*]} {
     50     setup_xfail *-*-pe*
     51 }
     52 
     53 setup_xfail pj-*-*
     54 
     55 if {! [ld_assemble $as $srcdir/$subdir/weak-undef.s tmpdir/weak-undef.o]} then {
     56     # It's OK if .weak doesn't work on this target.
     57     unresolved $testname
     58     return
     59 }
     60 
     61 # The linker should accept references to undefined weaks without error,
     62 # and resolve them to zero.
     63 
     64 set output_regexp \
     65 ".*Contents of section .data:.*0000 00000000 11111111.*"
     66 
     67 if {! [ld_simple_link $ld tmpdir/weak-undef "$flags tmpdir/weak-undef.o -T $srcdir/$subdir/weak-undef.t"] } then {
     68     fail $testname
     69 } else {
     70     if {![is_remote host] && [which $objdump] == 0} then {
     71 	unresolved $testname
     72 	return
     73     }
     74 
     75     set exec_output [run_host_cmd "$objdump" "-s tmpdir/weak-undef"]
     76     set exec_output [prune_warnings $exec_output]
     77     verbose -log $exec_output
     78 
     79     if {[regexp $output_regexp $exec_output]} then {
     80 	pass $testname
     81     } else {
     82 	fail $testname
     83     }
     84 }
     85