1 # Expect script for common symbol tests 2 # Copyright (C) 2003-2014 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 # Written by H.J. Lu (hjl (at) 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 # hpux assembly is weird 32 if [istarget "hppa*-*-hpux*"] { 33 return 34 } 35 36 proc test_sort_common {} { 37 global exec_output 38 global objdump 39 global srcdir 40 global subdir 41 global as 42 global ld 43 44 set test "--sort-common (descending)" 45 46 verbose "Check to see that --sort-common sorts in descending alignment" 47 48 # We do not run the sort common tests for the DLX target because we know that the linker 49 # will seg-fault. The built-in DLX linker script requires that there be something in the 50 # .text section and our sort-common.s file does not provide anything. 51 if [istarget dlx-*-*] { 52 untested "$test" 53 return 0 54 } 55 56 if { ![ld_assemble $as $srcdir/$subdir/sort-common.s tmpdir/sort-common.o] } { 57 unresolved "$test" 58 return 0 59 } 60 61 if { ![ld_simple_link $ld tmpdir/sort-common.dx "--sort-common=descending tmpdir/sort-common.o"] } { 62 fail "$test" 63 return 0 64 } 65 66 send_log "$objdump --syms tmpdir/sort-common.dx | grep var | sort\n" 67 set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.dx | grep var | sort"] 68 69 # Don't know why, but the CR ports fail this test. 70 setup_xfail "cr16-*-*" "crx-*-*" 71 72 # Note: The second regexp is for targets which put small commons in a .sbss 73 # section and large commons in a .bss section. 74 if { ![regexp ".*var_16.*var_8.*var_4.*var_2.*var_1.*" $exec_output] 75 && ![regexp ".*sbss.*var_8.*var_4.*var_2.*var_1.*bss.*var_16.*" $exec_output] } { 76 fail $test 77 } else { 78 pass $test 79 } 80 81 set test "--sort-common (ascending)" 82 83 verbose "Check to see that --sort-common=ascending sorts in ascending alignment" 84 85 if { ![ld_simple_link $ld tmpdir/sort-common.ax "--sort-common=ascending tmpdir/sort-common.o"] } { 86 fail "$test" 87 return 0 88 } 89 90 send_log "$objdump --syms tmpdir/sort-common.ax | grep var | sort\n" 91 set exec_output [run_host_cmd "$objdump" "--syms tmpdir/sort-common.ax | grep var | sort"] 92 93 if {![regexp ".*var_1.*var_2.*var_4.*var_8.*var_16.*" $exec_output]} { 94 fail $test 95 return 0 96 } 97 98 pass $test 99 return 1 100 } 101 102 test_sort_common 103 104 set test1 "size/aligment change of common symbols" 105 set test1w1 "$test1 (warning 1)" 106 set test1w2 "$test1 (warning 2)" 107 set test1c1 "$test1 (change 1)" 108 set test1c2 "$test1 (change 2)" 109 110 if { ![is_remote host] && [which $CC] == 0 } { 111 untested $test1w1 112 untested $test1w2 113 untested $test1c1 114 untested $test1c2 115 return 116 } 117 if { [istarget score-*-*] } { 118 untested $test1w1 119 untested $test1w2 120 untested $test1c1 121 untested $test1c2 122 return 123 } 124 125 proc dump_common1 { testname } { 126 global exec_output 127 global READELF 128 129 send_log "$READELF --syms tmpdir/common1.o | grep foo\n" 130 set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1.o | grep foo"] 131 132 if { ![regexp "(\[ \]*)(\[0-9\]+):(\[ \]*)(\[0\]*)80(\[ \]+)4(\[ \]+)(COMMON|OBJECT)(\[ \]+)GLOBAL(\[ \]+)DEFAULT(\[ \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[ \]+)_?foo2" $exec_output] 133 || ![regexp "(\[ \]*)(\[0-9\]+):(\[ \]*)(\[0-9\]+)(\[ \]+)21(\[ \]+)OBJECT(\[ \]+)GLOBAL(\[ \]+)DEFAULT(\[ \]+)(\[0-9\]+)(\[ \]+)_?foo1" $exec_output] } { 134 verbose $exec_output 135 fail $testname 136 return 0 137 } 138 139 return 1 140 } 141 142 proc stt_common_test { options testname } { 143 global exec_output 144 global READELF 145 global ld 146 147 set options "$options tmpdir/common1a.o" 148 149 if { ! [ld_simple_link $ld tmpdir/common.exe $options] } { 150 unresolved $testname 151 return 0 152 } 153 154 send_log "$READELF --syms tmpdir/common.exe | grep foo\n" 155 set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common.exe | grep foo"] 156 157 if {![regexp "(\[ \]*)(\[0-9\]+):(\[ \]*)(\[0-9\]+)(\[ \]+)(\[0-9\]+)(\[ \]+)COMMON(\[ \]+)GLOBAL(\[ \]+)DEFAULT(\[ \]+)(\[0-9\]+)(\[ \]+)_?foo2" $exec_output] } { 158 fail $testname 159 return 0 160 } 161 162 pass $testname 163 return 1 164 } 165 166 # Check to see if the assembler is generating symbols with the STT_COMMON type. 167 proc assembler_generates_commons {} { 168 global exec_output 169 global READELF 170 171 verbose "Check to see if STT_COMMON symbols are being generated:" 172 set exec_output [run_host_cmd "$READELF" "--syms tmpdir/common1a.o | grep foo"] 173 174 if { ![regexp "(\[ \]*)(\[0-9\]+):(\[ \]*)(\[0\]*)80(\[ \]+).(\[ \]+)COMMON(\[ \]+)GLOBAL(\[ \]+)DEFAULT(\[ \]+)(PRC\\\[0xff03\\\]|COM|SCOM)(\[ \]+)_?foo2" $exec_output] } { 175 verbose "STT_COMMON not generated" 176 return 0 177 } 178 179 verbose "STT_COMMON's are generated" 180 return 1 181 } 182 183 if [istarget nios2*-*-*] { 184 set CFLAGS "$CFLAGS -G0" 185 } 186 187 # Explicitly use "-fcommon" so that even if $CFLAGS includes 188 # "-fno-common", these tests are compiled as expected. 189 if { ![ld_compile "$CC $CFLAGS -fcommon" $srcdir/$subdir/common1a.c tmpdir/common1a.o] 190 || ![ld_compile "$CC $CFLAGS -fcommon" $srcdir/$subdir/common1b.c tmpdir/common1b.o] } { 191 unresolved $test1 192 return 193 } 194 195 global ld 196 global link_output 197 198 set options "-r tmpdir/common1a.o tmpdir/common1b.o" 199 200 # SH64 targets needs an extra ld option for this test. 201 if [istarget sh64*-*-*] { 202 if [istarget sh64*l*-*-*] { 203 set options "-mshlelf32 $options" 204 } else { 205 set options "-mshelf32 $options" 206 } 207 } 208 209 if { [ld_simple_link $ld tmpdir/common1.o $options] } { 210 unresolved $test1w1 211 return 212 } 213 214 # This test fails on MIPS because the backend sets type_change_ok. 215 # The size change warning is suppressed. Same on hppa64. 216 if {[istarget mips*-*-*] || [istarget hppa*64*-*-*]} { 217 if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } { 218 fail $test1w1 219 } else { 220 pass $test1w1 221 } 222 } else { 223 if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] 224 || ![regexp "Warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } { 225 fail $test1w1 226 } else { 227 pass $test1w1 228 } 229 } 230 231 if { [dump_common1 $test1c1] } { 232 pass $test1c1 233 } 234 235 set options "-r tmpdir/common1b.o tmpdir/common1a.o" 236 237 # SH64 targets needs an extra ld option for this test. 238 if [istarget sh64*-*-*] { 239 if [istarget sh64*l*-*-*] { 240 set options "-mshlelf32 $options" 241 } else { 242 set options "-mshelf32 $options" 243 } 244 } 245 246 if { [ld_simple_link $ld tmpdir/common1.o $options] } { 247 unresolved $test1w2 248 return 249 } 250 251 if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } { 252 fail $test1w2 253 } else { 254 pass $test1w2 255 } 256 257 if { [dump_common1 $test1c2] } { 258 pass $test1c2 259 } 260 261 # 262 # The following tests are for when we are generating STT_COMMON symbols only. 263 # 264 265 if { ![assembler_generates_commons] } { 266 return 267 } 268 269 stt_common_test "-static -e 0" "static link of common symbols" 270 stt_common_test "-shared" "shared link of common symbols" 271 stt_common_test "-pie" "position independent link of common symbols" 272 273
