elfvsb.exp

GNU binutils是GNU交叉工具链中的一个源码包

# Expect script for ld-visibility tests
#   Copyright 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# Written by Ian Lance Taylor ([e-mail])
#	     and H.J. Lu ([e-mail])
#

# Make sure that ld can generate ELF shared libraries with visibility.

# This test can only be run on a couple of ELF platforms.
# Square bracket expressions seem to confuse istarget.
if { ![istarget hppa*64*-*-hpux*] \
     && ![istarget hppa*-*-linux*] \
     && ![istarget i?86-*-linux*] \
     && ![istarget ia64-*-linux*] \
     && ![istarget m68k-*-linux*] \
     && ![istarget mips*-*-linux*] \
     && ![istarget powerpc*-*-linux*] \
     && ![istarget arm*-*-linux*] \
     && ![istarget alpha*-*-linux*] \
     && ![istarget sparc*-*-linux*] \
     && ![istarget s390*-*-linux*] \
     && ![istarget sh\[34\]*-*-linux*] \
     && ![istarget x86_64-*-linux*] } {
    return
}

if { [istarget *-*-linux*aout*] \
     || [istarget *-*-linux*oldld*] } {
    return
}

set test_list [lsort [glob -nocomplain $srcdir/$subdir/*.d]]
foreach t $test_list {
    # We need to strip the ".d", but can leave the dirname.
    verbose [file rootname $t]
    run_dump_test [file rootname $t]
}

# The remaining tests can only be run if ld generates native executables.
if ![isnative] then {return}

set tmpdir tmpdir
set SHCFLAG ""

if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {

    # AIX shared libraries do not seem to support useful features,
    # like overriding the shared library function or letting the
    # shared library refer to objects defined in the main program.  We
    # avoid testing those features.
    set SHCFLAG "-DXCOFF_TEST"

    # The AIX 3.2.5 loader appears to randomly fail when loading
    # shared libraries from NSF mounted partitions, so we avoid any
    # potential problems by using a local directory.
    catch {exec /bin/sh -c "echo $$"} pid
    set tmpdir /usr/tmp/ld.$pid
    catch "exec mkdir $tmpdir" exec_status

    # On AIX, we need to explicitly export the symbols the shared
    # library is going to provide, and need.
    set file [open $tmpdir/xcoff.exp w]
    puts $file shlibvar1
    puts $file shlibvar2
    puts $file shlib_shlibvar1
    puts $file shlib_shlibvar2
    puts $file shlib_shlibcall
    puts $file shlib_shlibcalled
    puts $file shlib_checkfunptr1
    puts $file shlib_getfunptr1
    puts $file shlib_check
    close $file
}

set support_protected "no"

if [istarget *-*-linux*] {
    if [ld_compile "$CC -g $CFLAGS -DPROTECTED_CHECK" $srcdir/$subdir/main.c $tmpdir/main.o] {
      if [ld_simple_link $CC $tmpdir/main "$tmpdir/main.o"] {
	catch "exec $tmpdir/main" support_protected
      }
    }
}

# The test procedure.
proc visibility_test { visibility progname testname main sh1 sh2 dat args } {
    global CC
    global srcdir
    global subdir
    global exec_output
    global link_output
    global host_triplet
    global tmpdir

    if [llength $args] { set shldflags [lindex $args 0] } else { set shldflags "" }

    # Build the shared library.
    # On AIX, we need to use an export file.
    set shared -shared
    if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
	set shared "-bM:SRE -bE:$tmpdir/xcoff.exp"
    }
    if {![ld_simple_link $CC $tmpdir/$progname.so "$shared $shldflags $tmpdir/$sh1 $tmpdir/$sh2"]} {
	if { [ string match $visibility "hidden_undef" ]
	     && [regexp "undefined reference to \`\.?visibility\'" $link_output]
	     && [regexp "undefined reference to \`visibility_var\'" $link_output] } {
    	    pass "$testname"
	} else { if { [ string match $visibility "protected_undef" ]
	     && [regexp "undefined reference to \`\.?visibility\'" $link_output]
	     && [regexp "undefined reference to \`visibility_var\'" $link_output] } {
    	    pass "$testname"
	} else {
	    fail "$testname"
	}}
    	return
    }

    # Link against the shared library.  Use -rpath so that the
    # dynamic linker can locate the shared library at runtime.
    # On AIX, we must include /lib in -rpath, as otherwise the loader
    # can not find -lc.
    set rpath $tmpdir
    if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {
	set rpath /lib:$tmpdir
    }
    if ![ld_simple_link $CC $tmpdir/$progname "-Wl,-rpath,$rpath $tmpdir/$main $tmpdir/$progname.so"] {
	if { [ string match $visibility "hidden" ]
	     && [regexp "undefined reference to \`\.?visibility\'" $link_output]
	     && [regexp "undefined reference to \`visibility_var\'" $link_output] } {
    	    pass "$testname"
	} else { if { [ string match $visibility "hidden_undef_def" ]
	     && [regexp "undefined reference to \`\.?visibility\'" $link_output]
	     && [regexp "undefined reference to \`visibility_def\'" $link_output]
	     && [regexp "undefined reference to \`\.?visibility_func\'" $link_output]
	     && [regexp "undefined reference to \`visibility_var\'" $link_output] } {
    	    pass "$testname"
	} else {
    	    fail "$testname"
	}}
    	return
    }

    if { [ string match $visibility "hidden" ]
	 || [ string match $visibility "hidden_undef" ]
	 || [ string match $visibility "protected_undef" ] } {
	fail "$testname"
    }

    # Run the resulting program
    send_log "$tmpdir/$progname >$tmpdir/$progname.out\n"
    verbose "$tmpdir/$progname >$tmpdir/$progname.out"
    catch "exec $tmpdir/$progname >$tmpdir/$progname.out" exec_output
    if ![string match "" $exec_output] then {
	send_log "$exec_output\n"
	verbose "$exec_output"
	fail "$testname"
    	return
    }

    send_log "diff $tmpdir/$progname.out $srcdir/$subdir/$dat.dat\n"
    verbose "diff $tmpdir/$progname.out $srcdir/$subdir/$dat.dat"
    catch "exec diff $tmpdir/$progname.out $srcdir/$subdir/$dat.dat" exec_output
    set exec_output [prune_warnings $exec_output]

    if {![string match "" $exec_output]} then {
	send_log "$exec_output\n"
	verbose "$exec_output"
	fail "$testname"
        return
    }

    pass "$testname"
}

proc visibility_run {visibility} {
    global CC
    global CFLAGS
    global SHCFLAG
    global srcdir
    global subdir
    global tmpdir
    global picflag
    global target_triplet
    global support_protected

    if [ string match $visibility "hidden" ] {
	set VSBCFLAG "-DHIDDEN_TEST"
    } else { if [ string match $visibility "hidden_normal" ] {
	set VSBCFLAG "-DHIDDEN_NORMAL_TEST"
    } else { if [ string match $visibility "hidden_undef" ] {
	set VSBCFLAG "-DHIDDEN_UNDEF_TEST"
    } else { if [ string match $visibility "hidden_undef_def" ] {
	set VSBCFLAG "-DHIDDEN_UNDEF_TEST -DDSO_DEFINE_TEST"
    } else { if [ string match $visibility "hidden_weak" ] {
	set VSBCFLAG "-DHIDDEN_WEAK_TEST"
    } else { if [ string match $visibility "protected" ] {
	set VSBCFLAG "-DPROTECTED_TEST"
    } else { if [ string match $visibility "protected_undef" ] {
	set VSBCFLAG "-DPROTECTED_UNDEF_TEST"
    } else { if [ string match $visibility "protected_undef_def" ] {
	set VSBCFLAG "-DPROTECTED_UNDEF_TEST -DDSO_DEFINE_TEST"
    } else { if [ string match $visibility "protected_weak" ] {
	set VSBCFLAG "-DPROTECTED_WEAK_TEST"
    } else {
	set VSBCFLAG ""
    }}}}}}}}}

    # Compile the main program.
    if ![ld_compile "$CC -g $CFLAGS $SHCFLAG $VSBCFLAG" $srcdir/$subdir/main.c $tmpdir/mainnp.o] {
	unresolved "visibility ($visibility) (non PIC)"
	unresolved "visibility ($visibility)"
    } else {
	# The shared library is composed of two files.  First compile them
	# without using -fpic.  That should work on an ELF system,
	# although it will be less efficient because the dynamic linker
	# will need to do more relocation work.  However, note that not
	# using -fpic will cause some of the tests to return different
	# results.
	if { ![ld_compile "$CC -g $CFLAGS $SHCFLAG $VSBCFLAG" $srcdir/$subdir/sh1.c $tmpdir/sh1np.o]
	     || ![ld_compile "$CC -g $CFLAGS $SHCFLAG $VSBCFLAG" $srcdir/$subdir/sh2.c $tmpdir/sh2np.o] } {
	    unresolved "visibility ($visibility) (non PIC)"
	} else { if { [istarget rs6000*-*-aix*] || [istarget powerpc*-*-aix*] } {