elfcomm.exp

GNU binutils是GNU交叉工具链中的一个源码包

# Expect script for common symbol tests
#   Copyright 2003, 2005 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 H.J. Lu ([e-mail])
#

# Make sure that ld correctly handles common symbols in ELF.

# This test can only be run on ELF platforms.
if ![is_elf_format] {
    return
}

set test1	"size/aligment change of common symbols"
set test1w1	"$test1 (warning 1)"
set test1w2	"$test1 (warning 2)"
set test1c1	"$test1 (change 1)"
set test1c2	"$test1 (change 2)"

if { [which $CC] == 0 } {
    untested $test1w1
    untested $test1w2
    untested $test1c1
    untested $test1c2
    return
}

proc dump_common1 { testname } {
    global exec_output
    global READELF

    send_log "$READELF -s tmpdir/common1.o | grep foo\n"
    catch "exec $READELF -s tmpdir/common1.o | grep foo" exec_output
    if { ![regexp "(\[ 	\]*)(\[0-9\]+):(\[ 	\]*)(\[0\]*)80(\[ 	\]+)4(\[ 	\]+)OBJECT(\[ 	\]+)GLOBAL(\[ 	\]+)DEFAULT(\[ 	\]+)(PRC\\\[0xff03\\\]|COM)(\[ 	\]+)_?foo2" $exec_output]
 	 || ![regexp "(\[ 	\]*)(\[0-9\]+):(\[ 	\]*)(\[0-9\]+)(\[ 	\]+)21(\[ 	\]+)OBJECT(\[ 	\]+)GLOBAL(\[ 	\]+)DEFAULT(\[ 	\]+)(\[0-9\]+)(\[ 	\]+)_?foo1" $exec_output] } {
	send_log "$exec_output\n"
	verbose $exec_output
	fail $testname
	return 0
    }

    return 1
}

if { ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1a.c tmpdir/common1a.o]
    || ![ld_compile "$CC $CFLAGS" $srcdir/$subdir/common1b.c tmpdir/common1b.o] } {
    unresolved $test1
    return
}

global ld
global link_output

if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1a.o tmpdir/common1b.o"] } {
    unresolved $test1w1
    return
}

if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output]
     || ![regexp "Warning: size of symbol \`_?foo1\' changed from 2 in tmpdir/common1a.o to 21 in tmpdir/common1b.o" $link_output] } {
    if { [istarget mips*-*-*] } {
	# This test fails on MIPS because the backend sets type_change_ok.  The
	# size change warning is suppressed.
	xfail $test1w1
    } else {
	fail $test1w1
    }
} else {
    pass $test1w1
}

if { [dump_common1 $test1c1] } {
    pass $test1c1
}

if { [ld_simple_link $ld tmpdir/common1.o "-r tmpdir/common1b.o tmpdir/common1a.o"] } {
    unresolved $test1w2
    return
}

if { ![regexp "Warning: alignment (\[0-9\]+) of symbol \`_?foo1\' in tmpdir/common1b.o is smaller than 64 in tmpdir/common1a.o" $link_output] } {
    fail $test1w2
} else {
    pass $test1w2
}

if { [dump_common1 $test1c2] } {
    pass $test1c2
}