crossref.exp

GNU binutils是GNU交叉工具链中的一个源码包

# Test NOCROSSREFS in a linker script.
# By Ian Lance Taylor, Cygnus Support.
#   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.

set test1 "NOCROSSREFS 1"
set test2 "NOCROSSREFS 2"

if { [which $CC] == 0 } {
    untested $test1
    untested $test2
    return
}

# Xtensa targets currently default to putting literal values in a separate
# section and that requires linker script support, so put literals in text.
global CFLAGS
if [istarget xtensa*-*-*] {
    set CFLAGS "$CFLAGS -mtext-section-literals"
}

if { ![ld_compile $CC "$srcdir/$subdir/cross1.c" tmpdir/cross1.o] \
     || ![ld_compile $CC "$srcdir/$subdir/cross2.c" tmpdir/cross2.o] } {
    unresolved $test1
    unresolved $test2
    return
}

set flags [big_or_little_endian]

# The a29k compiled code calls V_SPILL and V_FILL.  Since we don't
# need to run this code, but we don't have definitions for those
# functions, we just define them out.
if [istarget a29k*-*-*] {
    set flags "$flags --defsym V_SPILL=0 --defsym V_FILL=0"
}

if [istarget sh64*-*-elf] {
    # This is what gcc passes to ld by default.
    set flags "-mshelf32"
}

# IA64 has both ordered and unordered sections in an input file.
setup_xfail ia64-*-*

verbose -log "$ld $flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o"

catch "exec $ld $flags -o tmpdir/cross1 -T $srcdir/$subdir/cross1.t tmpdir/cross1.o tmpdir/cross2.o" exec_output

set exec_output [prune_warnings $exec_output]

regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output

if [string match "" $exec_output] then {
    fail $test1
} else {
    verbose -log "$exec_output"
    if [regexp "prohibited cross reference from .* to `.*foo' in" $exec_output] {
	pass $test1
    } else {
	fail $test1
    }
}

# Check cross references within a single object.

if { ![ld_compile $CC "$srcdir/$subdir/cross3.c" tmpdir/cross3.o] } {
    unresolved $test2
    return
}

verbose -log "$ld $flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o"

catch "exec $ld $flags -o tmpdir/cross2 -T $srcdir/$subdir/cross2.t tmpdir/cross3.o" exec_output

set exec_output [prune_warnings $exec_output]

regsub -all "(^|\n)($ld: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output

if [string match "" $exec_output] then {
    fail $test2
} else {
    verbose -log "$exec_output"
    if [regexp "prohibited cross reference from .* to `.*' in" $exec_output] {
	pass $test2
    } else {
	fail $test2
    }
}