ld/testsuite/ld-elfcomm/elfcomm.exp

   1 # Expect script for common symbol tests
   2 #   Copyright 2003, 2005, 2006, 2007 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 set test1       "size/aligment change of common symbols"
  32 set test1w1     "$test1 (warning 1)"
  33 set test1w2     "$test1 (warning 2)"
  34 set test1c1     "$test1 (change 1)"
  35 set test1c2     "$test1 (change 2)"
  36
  37 if { ![is_remote host] && [which $CC] == 0 } {
  38     untested $test1w1
  39     untested $test1w2
  40     untested $test1c1
  41     untested $test1c2
  42     return
  43 }
  44 if { [istarget score-*-*] } {
  45     untested $test1w1
  46     untested $test1w2
  47     untested $test1c1
  48     untested $test1c2
  49     return
  50 }
  51
  52 proc dump_common1 { testname } {
  53     global exec_output
  54     global READELF
  55
  56     send_log "$READELF --syms tmpdir/common1.o | grep foo\n"
  57     set exec_output [run_host_cmd "readelf" "--syms tmpdir/common1.o | grep foo"]
  58
  59     if {   ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+)4(\[        \]+)(COMMON|OBJECT)(\[  \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output]
  60         || ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)21(\[       \]+)OBJECT(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo1" $exec_output] } {
  61         verbose $exec_output
  62         fail $testname
  63         return 0
  64     }
  65
  66     return 1
  67 }
  68
  69 proc stt_common_test { options testname } {
  70     global exec_output
  71     global READELF
  72     global ld
  73
  74     set options "$options tmpdir/common1a.o"
  75
  76     if { ! [ld_simple_link $ld tmpdir/common.exe $options] } {
  77       unresolved $testname
  78       return 0
  79     }
  80
  81     send_log "$READELF --syms tmpdir/common.exe | grep foo\n"
  82     set exec_output [run_host_cmd "readelf" "--syms tmpdir/common.exe | grep foo"]
  83
  84     if {![regexp "(\[   \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)(\[0-9\]+)(\[       \]+)COMMON(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo2" $exec_output] } {
  85         fail $testname
  86         return 0
  87     }
  88
  89     pass $testname
  90     return 1
  91 }
  92
  93 # Check to see if the assembler is generating symbols with the STT_COMMON type.
  94 proc assembler_generates_commons {} {
  95     global exec_output
  96     global READELF
  97
  98     verbose "Check to see if STT_COMMON symbols are being generated:"
  99     set exec_output [run_host_cmd "readelf" "--syms tmpdir/common1a.o | grep foo"]
 100
 101     if { ![regexp "(\[  \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+).(\[        \]+)COMMON(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output] } {
 102         verbose "STT_COMMON not generated"
 103         return 0
 104     }
 105
 106     verbose "STT_COMMON's are generated"
 107     return 1
 108 }
 109
 110
 111 if {   ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1a.c tmpdir/common1a.o]
 112     || ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1b.c tmpdir/common1b.o] } {
 113     unresolved $test1
 114     return
 115 }
 116
 117 global ld
 118 global link_output
 119
 120 if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1a.o tmpdir/common1b.o"] } {
 121     unresolved $test1w1
 122     return
 123 }
 124
 125 # This test fails on MIPS because the backend sets type_change_ok.
 126 # The size change warning is suppressed.
 127 if {[istarget mips*-*-*]} {
 128     if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
 129         fail $test1w1
 130     } else {
 131         pass $test1w1
 132     }
 133 } else {
 134     if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output]
 135          || ![regexp "Warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } {
 136         fail $test1w1
 137     } else {
 138         pass $test1w1
 139     }
 140 }
 141
 142 if { [dump_common1 $test1c1] } {
 143     pass $test1c1
 144 }
 145
 146 if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1b.o tmpdir/common1a.o"] } {
 147     unresolved $test1w2
 148     return
 149 }
 150
 151 if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
 152     fail $test1w2
 153 } else {
 154     pass $test1w2
 155 }
 156
 157 if { [dump_common1 $test1c2] } {
 158     pass $test1c2
 159 }
 160
 161 #
 162 # The following tests are for when we are generating STT_COMMON symbols only.
 163 #
 164
 165 if { ![assembler_generates_commons] } {
 166     return
 167 }
 168
 169 stt_common_test "-static -e 0" "static link of common symbols"
 170 stt_common_test "-shared"      "shared link of common symbols"
 171 stt_common_test "-pie"         "position independent link of common symbols"
 172