binutils-gdb/ld/testsuite/ld-scripts/script.exp

# Test basic linker script functionality
# By Ian Lance Taylor, Cygnus Support
#   Copyright (C) 1999-2023 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# This program 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.

set testname "script"

if ![ld_assemble $as $srcdir/$subdir/script.s tmpdir/script.o] { 
    unsupported $testname
    return
}

proc check_script { } {
    global nm
    global testname
    global nm_output

    if ![ld_nm $nm "" tmpdir/script] {
	fail $testname
	return
    } 

    if {![info exists nm_output(text_start)] \
	    || ![info exists nm_output(text_end)] \
	    || ![info exists nm_output(data_start)] \
	    || ![info exists nm_output(data_end)]} {
	send_log "bad output from nm\n"
	verbose "bad output from nm"
	fail $testname
	return
    } 

    set passes 1
    set text_end 0x104
    set data_end 0x1004

    if [istarget *c4x*-*-*] then {
	set text_end 0x101
	set data_end 0x1001
    }

    if [istarget *c54x*-*-*] then {
	set text_end 0x102
	set data_end 0x1002
    }

    if {$nm_output(text_start) != 0x100} {
	send_log "text_start == $nm_output(text_start)\n"
	verbose "text_start == $nm_output(text_start)"
	set passes 0
    } 

    if {[info exists nm_output(tred)] \
        && $nm_output(tred) != (0x100 + 0x4000)} {
	send_log "tred == $nm_output(tred)\n"
	verbose "tred == $nm_output(tred)"
	set passes 0
    }

    if {$nm_output(text_end) < $text_end \
	    || $nm_output(text_end) > 0x110} {
	send_log "text_end == $nm_output(text_end)\n"
	verbose "text_end == $nm_output(text_end)"
	set passes 0
    } 

    if {$nm_output(data_start) != 0x1000} {
	send_log "data_start == $nm_output(data_start)\n"
	verbose "data_start == $nm_output(data_start)"
	set passes 0
    } 

    if {[info exists nm_output(fred)] \
        && $nm_output(fred) != (0x1000 + 0x1000)} {
	send_log "fred == $nm_output(fred)\n"
	verbose "fred == $nm_output(fred)"
	set passes 0
    }

    if {$nm_output(data_end) < $data_end \
	    || $nm_output(data_end) > 0x1010} {
	send_log "data_end == $nm_output(data_end)\n"
	verbose "data_end == $nm_output(data_end)"
	set passes 0
    } 

    if { $passes } {
	pass $testname
    } else {
	fail $testname
    }
}

proc extract_symbol_test { testfile testname } {
    global objcopy
    global nm
    global size
    global target_triplet

    set copyfile tmpdir/extract
    set args "--extract-symbol $testfile $copyfile"
    set exec_output [run_host_cmd $objcopy $args]
    if ![string equal "" $exec_output] {
	fail $testname
	return
    }

    set orig_syms [run_host_cmd $nm $testfile]
    set syms_massaged $orig_syms
    switch -regexp $target_triplet {
	^mmix-knuth-mmixware$ {
	    # Without section sizes (stripped together with the
	    # contents for this target), we can't deduce the symbol
	    # types.  Artificially tracking the symbol types is
	    # considered not worthwhile as there's no known use-case
	    # for --extract-symbols for this target.  The option is
	    # supported just enough to emit the same symbol values,
	    # but absolute symbol types are expected.
	    regsub -all " \[TD\] " $syms_massaged " A " syms_massaged
	}
	^mips-*-* {
	    # This test cannot proceed any further for MIPS targets.
	    # The extract_syms operation produces a binary with a zero
	    # length .reginfo section, which is illegal under the MIPS
	    # ABI.  Since producing such sections is part of the expected
	    # behaviour of --extract-symbols, no further testing can be
	    # performed.  Fortunately this should not matter as extracting
	    # symbols is only needed for VxWorks support.
	    pass $testname
	    return
	}
	[a-z]*-*-pe$ {
	    # Fails for PE based targets because the extracted section
	    # relative symbols (eg tred or .text) all become undefined
	    # when the sections are blown away by --extract-symbol.  Again
	    # this should not matter as --extract-symbol is only used by
	    # VxWorks.
	    pass $testname
	    return
	}
	# More PE variations...
	[a-z]*-*-mingw* {
	    pass $testname
	    return
	}
	[a-z]*-*-cygwin$ {
	    pass $testname
	    return
	}
    }

    set extract_syms [run_host_cmd $nm $copyfile]
    if ![string equal $syms_massaged $extract_syms] {
	fail $testname
	return
    }

    # Check that the stripped section contains no code or data.
    set exec_output [run_host_cmd $size $copyfile]
    if ![regexp ".* 0\[	 \]+0\[	 \]+0\[	 \]+0\[	 \]+0\[	 \]+.*" $exec_output] {
	fail $testname
	return
    }

    pass $testname
}

# PE targets need to set the image base to 0 to avoid complications from nm.
set old_LDFLAGS $LDFLAGS
if { [is_pecoff_format] } then {
    append LDFLAGS " --image-base 0"
} elseif { [is_xcoff_format] } then {
    append LDFLAGS " -bnogc"
}
set flags $LDFLAGS

if ![ld_link $ld tmpdir/script "$flags -T $srcdir/$subdir/script.t tmpdir/script.o"] {
    fail $testname
} else {
    check_script
}

set testname "MRI script"

if ![ld_link $ld tmpdir/script "$flags -c $srcdir/$subdir/scriptm.t"] {
    fail $testname
} else {
    check_script
}

set testname "MEMORY"

if ![ld_link $ld tmpdir/script "$flags -T $srcdir/$subdir/memory.t tmpdir/script.o"] {
    fail $testname
} else {
    check_script
}

set testname "MEMORY with symbols"
if ![ld_link $ld tmpdir/script "$flags -defsym DATA_ORIGIN=0x1000 -defsym DATA_LENGTH=0x1000 -T $srcdir/$subdir/memory_sym.t tmpdir/script.o"] {
    fail $testname
    untested "extract symbols"
} else {
    check_script
    extract_symbol_test tmpdir/script "extract symbols"
}

set test_script_list [lsort [glob $srcdir/$subdir/region-alias-*.t]]

foreach test_script $test_script_list {
    run_dump_test [string range $test_script 0 end-2]
}

run_dump_test "asciz"
run_dump_test "align-with-input"
run_dump_test "pr20302"
run_dump_test "output-section-types"

run_dump_test "segment-start" {{name (default)}}
run_dump_test "segment-start" {{name (overridden)} \
			       {ld -Ttext-segment=0x10000000}}

set LDFLAGS $old_LDFLAGS