ld/testsuite/ld-shared/shared.exp

   1 # Expect script for ld-shared tests
   2 #   Copyright (C) 1994-2021 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 Ian Lance Taylor (ian@cygnus.com)
  22 #
  23
  24 # Make sure that ld can generate ELF shared libraries.
  25 # Note that linking against ELF shared libraries is tested by the
  26 # bootstrap test.
  27
  28 # Check to see if the C compiler works
  29 if { ![check_compiler_available] } {
  30     return
  31 }
  32
  33 # This test can only be run on a couple of ELF platforms.
  34 # Square bracket expressions seem to confuse istarget.
  35 if { ![istarget hppa*64*-*-hpux*] \
  36      && ![istarget hppa*-*-linux*] \
  37      && ![istarget i?86-*-sysv4*] \
  38      && ![istarget i?86-*-unixware] \
  39      && ![istarget i?86-*-elf*] \
  40      && ![istarget i?86-*-linux*] \
  41      && ![istarget i?86-*-gnu*] \
  42      && ![istarget *-*-nacl*] \
  43      && ![istarget ia64-*-elf*] \
  44      && ![istarget ia64-*-linux*] \
  45      && ![istarget m68k-*-linux*] \
  46      && ![istarget mips*-*-irix5*] \
  47      && ![istarget mips*-*-linux*] \
  48      && ![istarget powerpc*-*-elf*] \
  49      && ![istarget powerpc*-*-linux*] \
  50      && ![istarget powerpc*-*-sysv4*] \
  51      && ![istarget sparc*-*-elf] \
  52      && ![istarget sparc*-*-solaris2*] \
  53      && ![istarget sparc*-*-linux*] \
  54      && ![istarget arm*-*-linux*] \
  55      && ![istarget alpha*-*-linux*] \
  56      && ![istarget rs6000*-*-aix*] \
  57      && ![istarget powerpc*-*-aix*] \
  58      && ![istarget s390*-*-linux*] \
  59      && ![istarget aarch64*-*-linux*] \
  60      && ![istarget x86_64-*-linux*] } {
  61     return
  62 }
  63
  64 set tmpdir tmpdir
  65 set SHCFLAG ""
  66 set shared_needs_pic "no"
  67
  68 # Disable all sanitizers.
  69 set old_CFLAGS "$CFLAGS"
  70 append CFLAGS " $NOSANITIZE_CFLAGS"
  71
  72 if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
  73
  74     # AIX shared libraries do not seem to support useful features,
  75     # like overriding the shared library function or letting the
  76     # shared library refer to objects defined in the main program.  We
  77     # avoid testing those features.
  78     set SHCFLAG "-DXCOFF_TEST"
  79
  80     # The AIX 3.2.5 loader appears to randomly fail when loading
  81     # shared libraries from NSF mounted partitions, so we avoid any
  82     # potential problems by using a local directory.
  83     catch {exec /bin/sh -c "echo $$"} pid
  84     set tmpdir /usr/tmp/ld.$pid
  85     catch "exec mkdir $tmpdir" exec_status
  86
  87     # On AIX, we need to explicitly export the symbols the shared
  88     # library is going to provide, and need.
  89     set file [open $tmpdir/xcoff.exp w]
  90     puts $file shlibvar1
  91     puts $file shlibvar2
  92     puts $file shlib_shlibvar1
  93     puts $file shlib_shlibvar2
  94     puts $file shlib_shlibcall
  95     puts $file shlib_shlibcalled
  96     puts $file shlib_checkfunptr1
  97     puts $file shlib_getfunptr1
  98     puts $file shlib_check
  99     close $file
 100 }
 101
 102 if [istarget arm*-*-linux*] {
 103     # On ARM section anchors can change the symbol pre-emptability for
 104     # non-PIC shared libraries, causing these tests to fail.  Turn section
 105     # anchors off.
 106     set SHCFLAG "-fno-section-anchors"
 107
 108     # On targets that have MOVW the compiler will emit relocations which
 109     # the linker doesn't support when compiling -shared without -fpic.  The
 110     # test to find out whether we want to XFAIL the non-PIC tests requires
 111     # a compile - so we pre-calculate it here.  We also note that this can
 112     # only affect arm*-*-*eabi* targets as the old ABI doesn't support v7.
 113     if [istarget arm*-*-*eabi*] {
 114         set file [open $tmpdir/movw-detect.c w]
 115         puts $file "void foo(void) { __asm (\"movw r0, #0\"); }"
 116         close $file
 117         if [run_host_cmd_yesno "$CC" "$CFLAGS -c $tmpdir/movw-detect.c -o $tmpdir/movw-detect.o"] {
 118             set shared_needs_pic "yes"
 119         }
 120     }
 121 }
 122
 123 # The test procedure.
 124 proc shared_test { progname testname main sh1 sh2 dat args } {
 125     global CC
 126     global srcdir
 127     global subdir
 128     global exec_output
 129     global host_triplet
 130     global tmpdir
 131
 132     if [llength $args] { set shldflags [lindex $args 0] } else { set shldflags "" }
 133
 134     # Build the shared library.
 135     # On AIX, we need to use an export file.
 136     set shared -shared
 137     if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 138         set shared "-bM:SRE -bE:$tmpdir/xcoff.exp"
 139     }
 140     if { [is_elf_format] && [check_shared_lib_support] } {
 141         append shared " -Wl,-z,notext"
 142     }
 143     if {![ld_link $CC $tmpdir/$progname.so "$shared $shldflags $tmpdir/$sh1 $tmpdir/$sh2"]} {
 144         fail "$testname"
 145         return
 146     }
 147
 148     # Link against the shared library.  Use -rpath so that the
 149     # dynamic linker can locate the shared library at runtime.
 150     # On AIX, we must include /lib in -rpath, as otherwise the loader
 151     # can not find -lc.
 152     set rpath $tmpdir
 153     if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 154         set rpath /lib:$tmpdir
 155     }
 156     if ![ld_link $CC $tmpdir/$progname "-Wl,-rpath,$rpath $tmpdir/$main $tmpdir/$progname.so"] {
 157         fail "$testname"
 158         return
 159     }
 160
 161     if ![isnative] {
 162         unsupported $testname
 163         return
 164     }
 165
 166     # Run the resulting program
 167     send_log "$tmpdir/$progname >$tmpdir/$progname.out\n"
 168     verbose "$tmpdir/$progname >$tmpdir/$progname.out"
 169     catch "exec $tmpdir/$progname >$tmpdir/$progname.out" exec_output
 170     if ![string match "" $exec_output] then {
 171         send_log "$exec_output\n"
 172         verbose "$exec_output"
 173         fail "$testname"
 174         return
 175     }
 176
 177     send_log "diff $tmpdir/$progname.out $srcdir/$subdir/$dat.dat\n"
 178     verbose "diff $tmpdir/$progname.out $srcdir/$subdir/$dat.dat"
 179     catch "exec diff $tmpdir/$progname.out $srcdir/$subdir/$dat.dat" exec_output
 180     set exec_output [prune_warnings $exec_output]
 181
 182     if {![string match "" $exec_output]} then {
 183         send_log "$exec_output\n"
 184         verbose "$exec_output"
 185         fail "$testname"
 186         return
 187     }
 188
 189     pass "$testname"
 190 }
 191
 192 # Old version of GCC for MIPS default to enabling -fpic
 193 # and get confused if it is used on the command line.
 194 if { [istarget mips*-*-*] && ! [at_least_gcc_version 4 3] } then {
 195     set picflag ""
 196 } else {
 197     # Unfortunately, the gcc argument is -fpic and the cc argument is
 198     # -KPIC.  We have to try both.
 199     set picflag "-fpic"
 200     send_log "$CC $picflag\n"
 201     verbose "$CC $picflag"
 202     catch "exec $CC $picflag" exec_output
 203     send_log "$exec_output\n"
 204     verbose "--" "$exec_output"
 205     if { [string match "*illegal option*" $exec_output] \
 206          || [string match "*option ignored*" $exec_output] \
 207          || [string match "*unrecognized option*" $exec_output] \
 208          || [string match "*passed to ld*" $exec_output] } {
 209         set picflag "-KPIC"
 210     }
 211 }
 212 verbose "Using $picflag to compile PIC code"
 213
 214 # Compile the main program.
 215 if ![ld_compile "$CC $CFLAGS $SHCFLAG" $srcdir/$subdir/main.c $tmpdir/mainnp.o] {
 216     unresolved "shared (non PIC)"
 217     unresolved "shared"
 218 } else {
 219     # The shared library is composed of two files.  First compile them
 220     # without using -fpic.  That should work on an ELF system,
 221     # although it will be less efficient because the dynamic linker
 222     # will need to do more relocation work.  However, note that not
 223     # using -fpic will cause some of the tests to return different
 224     # results.  Make sure that PLT is used since PLT is expected.
 225     global PLT_CFLAGS NOPIE_CFLAGS
 226     if { ![ld_compile "$CC $PLT_CFLAGS $NOPIE_CFLAGS $CFLAGS $SHCFLAG" $srcdir/$subdir/sh1.c $tmpdir/sh1np.o]
 227          || ![ld_compile "$CC $PLT_CFLAGS $CFLAGS $SHCFLAG" $srcdir/$subdir/sh2.c $tmpdir/sh2np.o] } {
 228         unresolved "shared (non PIC)"
 229     } else { if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 230         shared_test shnp "shared (nonPIC)" mainnp.o sh1np.o sh2np.o xcoff
 231     } else {
 232         # Solaris defaults to -z text.
 233         setup_xfail "*-*-solaris2*"
 234         setup_xfail "ia64-*-linux*"
 235         setup_xfail "alpha*-*-linux*"
 236         setup_xfail "powerpc64*-*-*"
 237         if { ![istarget hppa*64*-*-linux*] } {
 238             setup_xfail "hppa*-*-linux*"
 239         }
 240         if { [istarget sparc*-*-linux*] && [is_elf64 $tmpdir/mainnp.o] } {
 241             setup_xfail "sparc*-*-linux*"
 242         }
 243         if { [is_elf64 $tmpdir/mainnp.o] } {
 244             setup_xfail "x86_64-*-linux*"
 245         }
 246         setup_xfail "x86_64-*-linux-gnux32"
 247         setup_xfail "s390x-*-linux*"
 248         if [ string match $shared_needs_pic "yes" ] {
 249             setup_xfail "arm*-*-linux*"
 250         }
 251         setup_xfail "aarch64*-*-linux*"
 252         shared_test shnp "shared (non PIC)" mainnp.o sh1np.o sh2np.o shared
 253
 254         # Test ELF shared library relocations with a non-zero load
 255         # address for the library.  Near as I can tell, the R_*_RELATIVE
 256         # relocations for various targets are broken in the case where
 257         # the load address is not zero (which is the default).
 258         setup_xfail "*-*-linux*libc1"
 259         setup_xfail "powerpc*-*-linux*"
 260         setup_xfail "ia64-*-linux*"
 261         setup_xfail "alpha*-*-linux*"
 262         setup_xfail "mips*-*-linux*"
 263         if { ![istarget hppa*64*-*-linux*] } {
 264             setup_xfail "hppa*-*-linux*"
 265         }
 266         if { [istarget sparc*-*-linux*] && [is_elf64 $tmpdir/mainnp.o] } {
 267             setup_xfail "sparc*-*-linux*"
 268         }
 269         if { [is_elf64 $tmpdir/mainnp.o] } {
 270             setup_xfail "x86_64-*-linux*"
 271         }
 272         setup_xfail "x86_64-*-linux-gnux32"
 273         setup_xfail "s390x-*-linux*"
 274         if [ string match $shared_needs_pic "yes" ] {
 275             setup_xfail "arm*-*-linux*"
 276         }
 277         setup_xfail "aarch64*-*-linux*"
 278         # Solaris defaults to -z text.
 279         setup_xfail "*-*-solaris2*"
 280         shared_test shnp "shared (non PIC, load offset)" \
 281                 mainnp.o sh1np.o sh2np.o shared \
 282                 "-Wl,-T,$srcdir/$subdir/elf-offset.ld,--hash-style=sysv"
 283     } }
 284
 285     # Now compile the code using -fpic.
 286
 287     if { ![ld_compile "$CC $CFLAGS $SHCFLAG $picflag" $srcdir/$subdir/sh1.c $tmpdir/sh1p.o]
 288          || ![ld_compile "$CC $CFLAGS $SHCFLAG $picflag" $srcdir/$subdir/sh2.c $tmpdir/sh2p.o] } {
 289         unresolved "shared"
 290     } else {
 291         if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 292             shared_test shp "shared" mainnp.o sh1p.o sh2p.o xcoff
 293         } else {
 294             shared_test shp "shared" mainnp.o sh1p.o sh2p.o shared
 295             ld_compile "$CC $CFLAGS -DSYMBOLIC_TEST -DXCOFF_TEST $SHCFLAG" $srcdir/$subdir/main.c $tmpdir/mainnp.o
 296             ld_compile "$CC $CFLAGS -DSYMBOLIC_TEST -DXCOFF_TEST $SHCFLAG $picflag" $srcdir/$subdir/sh1.c $tmpdir/sh1p.o
 297             shared_test shp "shared -Bsymbolic" mainnp.o sh1p.o sh2p.o symbolic "-Bsymbolic"
 298             ld_compile "$CC $CFLAGS $SHCFLAG" $srcdir/$subdir/main.c $tmpdir/mainnp.o
 299             ld_compile "$CC $CFLAGS $SHCFLAG $picflag" $srcdir/$subdir/sh1.c $tmpdir/sh1p.o
 300         }
 301     }
 302 }
 303
 304 # Now do the same tests again, but this time compile main.c PIC.
 305 if ![ld_compile "$CC $CFLAGS $SHCFLAG $picflag" $srcdir/$subdir/main.c $tmpdir/mainp.o] {
 306     unresolved "shared (PIC main, non PIC so)"
 307     unresolved "shared (PIC main)"
 308 } else {
 309     if { [file exists $tmpdir/sh1np.o ] && [ file exists $tmpdir/sh2np.o ] } {
 310         if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 311             shared_test shmpnp "shared (PIC main, non PIC so)" mainp.o sh1np.o sh2np.o xcoff
 312         } else {
 313             # Solaris defaults to -z text.
 314             setup_xfail "*-*-solaris2*"
 315             setup_xfail "ia64-*-linux*"
 316             setup_xfail "alpha*-*-linux*"
 317             setup_xfail "powerpc64*-*-*"
 318             if { ![istarget hppa*64*-*-linux*] } {
 319                 setup_xfail "hppa*-*-linux*"
 320             }
 321             if { [istarget sparc*-*-linux*] && [is_elf64 $tmpdir/mainp.o] } {
 322                 setup_xfail "sparc*-*-linux*"
 323             }
 324             if { [is_elf64 $tmpdir/mainp.o] } {
 325                 setup_xfail "x86_64-*-linux*"
 326             }
 327             setup_xfail "x86_64-*-linux-gnux32"
 328             setup_xfail "s390x-*-linux*"
 329             if [ string match $shared_needs_pic "yes" ] {
 330                 setup_xfail "arm*-*-linux*"
 331             }
 332             setup_xfail "aarch64*-*-linux*"
 333             shared_test shmpnp "shared (PIC main, non PIC so)" mainp.o sh1np.o sh2np.o shared
 334         }
 335     } else {
 336         unresolved "shared (PIC main, non PIC so)"
 337     }
 338
 339     if { [file exists $tmpdir/sh1p.o ] && [ file exists $tmpdir/sh2p.o ] } {
 340         if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 341             shared_test shmpp "shared (PIC main)" mainp.o sh1p.o sh2p.o xcoff
 342         } else {
 343             shared_test shmpp "shared (PIC main)" mainp.o sh1p.o sh2p.o shared
 344         }
 345     } else {
 346         unresolved "shared (PIC main)"
 347     }
 348 }
 349
 350 set CFLAGS "$old_CFLAGS"
 351
 352 if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
 353     # Remove the temporary directory.
 354     catch "exec rm -rf $tmpdir" exec_status
 355 }