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 proc test_sort_common {} {
  32     global exec_output
  33     global objdump
  34     global srcdir
  35     global subdir
  36     global as
  37     global ld
  38
  39     set test "--sort-common (descending)"
  40
  41     verbose "Check to see that --sort-common sorts in descending alignment"
  42
  43     # We do not run the sort common tests for the DLX target because we know that the linker
  44     # will seg-fault.  The built-in DLX linker script requires that there be something in the
  45     # .text section and our sort-common.s file does not provide anything.
  46     if [istarget dlx-*-*] {
  47         untested "$test"
  48         return 0
  49     }
  50
  51     if { ![ld_assemble $as $srcdir/$subdir/sort-common.s tmpdir/sort-common.o] } {
  52         unresolved "$test"
  53         return 0
  54     }
  55
  56     if { ![ld_simple_link $ld tmpdir/sort-common.dx "--sort-common=descending tmpdir/sort-common.o"] } {
  57         fail "$test"
  58         return 0
  59     }
  60
  61     send_log "$objdump --syms tmpdir/sort-common.dx | grep var | sort\n"
  62     set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.dx | grep var | sort"]
  63
  64     # Don't know why, but the CR ports fail this test.
  65     setup_xfail "cr16-*-*" "crx-*-*"
  66
  67     # Note: The second regexp is for targets which put small commons in a .sbss
  68     #  section and large commons in a .bss section.
  69     if {   ![regexp ".*var_16.*var_8.*var_4.*var_2.*var_1.*" $exec_output]
  70         && ![regexp ".*sbss.*var_8.*var_4.*var_2.*var_1.*bss.*var_16.*" $exec_output] } {
  71         fail $test
  72     } else {
  73         pass $test
  74     }
  75
  76     set test "--sort-common (ascending)"
  77
  78     verbose "Check to see that --sort-common=ascending sorts in ascending alignment"
  79
  80     if { ![ld_simple_link $ld tmpdir/sort-common.ax "--sort-common=ascending tmpdir/sort-common.o"] } {
  81         fail "$test"
  82         return 0
  83     }
  84
  85     send_log "$objdump --syms tmpdir/sort-common.ax | grep var | sort\n"
  86     set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.ax | grep var | sort"]
  87
  88     if {![regexp ".*var_1.*var_2.*var_4.*var_8.*var_16.*" $exec_output]} {
  89         fail $test
  90         return 0
  91     }
  92
  93     pass $test
  94     return 1
  95 }
  96
  97 test_sort_common
  98
  99 set test1       "size/aligment change of common symbols"
 100 set test1w1     "$test1 (warning 1)"
 101 set test1w2     "$test1 (warning 2)"
 102 set test1c1     "$test1 (change 1)"
 103 set test1c2     "$test1 (change 2)"
 104
 105 if { ![is_remote host] && [which $CC] == 0 } {
 106     untested $test1w1
 107     untested $test1w2
 108     untested $test1c1
 109     untested $test1c2
 110     return
 111 }
 112 if { [istarget score-*-*] } {
 113     untested $test1w1
 114     untested $test1w2
 115     untested $test1c1
 116     untested $test1c2
 117     return
 118 }
 119
 120 proc dump_common1 { testname } {
 121     global exec_output
 122     global READELF
 123
 124     send_log "$READELF --syms tmpdir/common1.o | grep foo\n"
 125     set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1.o | grep foo"]
 126
 127     if {   ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+)4(\[        \]+)(COMMON|OBJECT)(\[  \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output]
 128         || ![regexp "(\[        \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)21(\[       \]+)OBJECT(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo1" $exec_output] } {
 129         verbose $exec_output
 130         fail $testname
 131         return 0
 132     }
 133
 134     return 1
 135 }
 136
 137 proc stt_common_test { options testname } {
 138     global exec_output
 139     global READELF
 140     global ld
 141
 142     set options "$options tmpdir/common1a.o"
 143
 144     if { ! [ld_simple_link $ld tmpdir/common.exe $options] } {
 145       unresolved $testname
 146       return 0
 147     }
 148
 149     send_log "$READELF --syms tmpdir/common.exe | grep foo\n"
 150     set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common.exe | grep foo"]
 151
 152     if {![regexp "(\[   \]*)(\[0-9\]+):(\[      \]*)(\[0-9\]+)(\[       \]+)(\[0-9\]+)(\[       \]+)COMMON(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(\[0-9\]+)(\[       \]+)_?foo2" $exec_output] } {
 153         fail $testname
 154         return 0
 155     }
 156
 157     pass $testname
 158     return 1
 159 }
 160
 161 # Check to see if the assembler is generating symbols with the STT_COMMON type.
 162 proc assembler_generates_commons {} {
 163     global exec_output
 164     global READELF
 165
 166     verbose "Check to see if STT_COMMON symbols are being generated:"
 167     set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1a.o | grep foo"]
 168
 169     if { ![regexp "(\[  \]*)(\[0-9\]+):(\[      \]*)(\[0\]*)80(\[       \]+).(\[        \]+)COMMON(\[   \]+)GLOBAL(\[   \]+)DEFAULT(\[  \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[     \]+)_?foo2" $exec_output] } {
 170         verbose "STT_COMMON not generated"
 171         return 0
 172     }
 173
 174     verbose "STT_COMMON's are generated"
 175     return 1
 176 }
 177
 178
 179 if {   ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1a.c tmpdir/common1a.o]
 180     || ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1b.c tmpdir/common1b.o] } {
 181     unresolved $test1
 182     return
 183 }
 184
 185 global ld
 186 global link_output
 187
 188 if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1a.o tmpdir/common1b.o"] } {
 189     unresolved $test1w1
 190     return
 191 }
 192
 193 # This test fails on MIPS because the backend sets type_change_ok.
 194 # The size change warning is suppressed.
 195 if {[istarget mips*-*-*]} {
 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         fail $test1w1
 198     } else {
 199         pass $test1w1
 200     }
 201 } else {
 202     if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output]
 203          || ![regexp "Warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } {
 204         fail $test1w1
 205     } else {
 206         pass $test1w1
 207     }
 208 }
 209
 210 if { [dump_common1 $test1c1] } {
 211     pass $test1c1
 212 }
 213
 214 if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1b.o tmpdir/common1a.o"] } {
 215     unresolved $test1w2
 216     return
 217 }
 218
 219 if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
 220     fail $test1w2
 221 } else {
 222     pass $test1w2
 223 }
 224
 225 if { [dump_common1 $test1c2] } {
 226     pass $test1c2
 227 }
 228
 229 #
 230 # The following tests are for when we are generating STT_COMMON symbols only.
 231 #
 232
 233 if { ![assembler_generates_commons] } {
 234     return
 235 }
 236
 237 stt_common_test "-static -e 0" "static link of common symbols"
 238 stt_common_test "-shared"      "shared link of common symbols"
 239 stt_common_test "-pie"         "position independent link of common symbols"
 240