ld/testsuite/ld-gc/gc.exp

   1 # Expect script for ld-gc tests
   2 #   Copyright 2008, 2009
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU Binutils.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 # MA 02110-1301, USA.
  21
  22 # These tests require --gc-sections
  23 if ![check_gc_sections_available] {
  24     return
  25 }
  26
  27 set cflags "-ffunction-sections -fdata-sections"
  28 set objfile "tmpdir/gc.o"
  29
  30 if { [is_remote host] || [which $CC] != 0 } {
  31     ld_compile "$CC -c $CFLAGS $cflags" $srcdir/$subdir/gc.c $objfile
  32 }
  33
  34 proc test_gc { testname filename linker ldflags} {
  35     global nm
  36     global srcdir
  37     global subdir
  38     global nm_output
  39     global objfile
  40
  41     if ![file readable $objfile ] {
  42         untested $testname
  43         return
  44     }
  45
  46     set outfile "tmpdir/$filename"
  47     set options "-L$srcdir/$subdir"
  48     append options " " $ldflags " " [ld_simple_link_defsyms] " " $objfile
  49
  50     # SH64 targets needs an extra ld option for this test.
  51     if [istarget sh64*-*-*] {
  52         if [istarget sh64*l*-*-*] {
  53             set options "-mshlelf32 $options"
  54         } else {
  55             set options "-mshelf32 $options"
  56         }
  57     }
  58
  59     if ![ld_simple_link $linker $outfile $options] {
  60         fail $testname
  61         return
  62     }
  63     if ![ld_nm $nm "" $outfile] {
  64         unresolved $testname
  65         return
  66     }
  67     if {![info exists nm_output(used_func)] \
  68             || ![info exists nm_output(used_var)]} {
  69         send_log "used sections do not exist\n"
  70         verbose "used sections do not exist"
  71         fail $testname
  72         return
  73     }
  74     #ppc64_elf_gc_mark_hook needs to be taught how to look through
  75     #the .toc section to properly mark variable sections for gc.
  76     setup_xfail "powerpc64*-*-*"
  77     if {[info exists nm_output(unused_func)] \
  78             || [info exists nm_output(unused_var)]} {
  79         send_log "unused section still here\n"
  80         verbose "unused section still here"
  81         fail $testname
  82         return
  83     }
  84     pass $testname
  85 }
  86
  87 test_gc "Check --gc-section" "gcexe" $ld "--gc-sections -e main"
  88 test_gc "Check --gc-section/-q" "gcrexe" $ld "--gc-sections -q -e main"
  89 test_gc "Check --gc-section/-r/-e" "gcrel" $ld "-r --gc-sections -e main"
  90 test_gc "Check --gc-section/-r/-u" "gcrel" $ld "-r --gc-sections -u used_func"
  91
  92 run_dump_test "noent"