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# Copyright (C) 2004, 2005, 2006, 2007, 2008

# 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.

# Please email any bugs, comments, and/or additions to this file to:

# binutils@sources.redhat.com

# This scripts tests of all available SH architectures with all other SH

# architectures. It ensures that those combinations which should not work

# do not work, and that those that should work produce the correct output

# architecture.

#

# It looks for files in the same directory as this file named sh*.s .

# Each file must contain one or more instructions which uniquely identifies

# that architecture. The architecture name is inferred from the file name.

# It is best to use the same files used by the assembler testsuite.

#

# It also creates another architecture named 'sh-unknown' by modifying

# another arch type (there is no way to assemble such an arch) in order

# to test what the linker would do with an older object file.

#

# The script generates the architecture permutations automatically,

# but it reads the expected results from the file arch_expected.txt (also

# found in the same directory as this script).

#

# The arch_expected.txt file should NOT be hand edited. Whenever the script

# is run (e.g. with 'make check') it creates a new (usually identical) file

# named arch_results.txt in the /ld/testsuite directory. When the

# expected results change (or new architectures are added) this new file

# can be used to replace arch_expected.txt with no modification required.

# The procedure extracts the architecture name from the objdump output.

# If there is no architecture name (or objdump output changes significantly)

# then the behaviour is undefined, but it will most likely return junk.

proc get_sh_arch { ofile } {

    global OBJDUMP

    set cmd "$OBJDUMP -f $ofile"

    verbose -log $cmd

    catch "exec $cmd" objdump_output

    verbose -log $objdump_output

    set objdump_output [string replace $objdump_output 0 \

            [expr [string first "architecture:" $objdump_output] + 13] ""]

    return [string range $objdump_output 0 [expr [string first "," $objdump_output] - 1]]

}

# This procedure runs two tests:

#   Test 1: Check the linker can link the given files.

#   Test 2: Check that the resultant architecture is as expected.

# It also writes an entry to the arch_results.txt file.

proc test_arch { file1 file2 arch resultfile } {

    global LD

    set name1 [file tail $file1]

    set rootname1 [file rootname $name1]

    set name2 [file tail $file2]

    set rootname2 [file rootname $name2]

    set flags [big_or_little_endian]

    # This must use -r to prevent LD trying to relocate the (unrealistic) file

    send_log "$LD $flags -r -o ${rootname1}_${rootname2}.o $file1 $file2\n"

    catch "exec $LD $flags -r -o ${rootname1}_${rootname2}.o $file1 $file2" ld_output

    send_log $ld_output

    if {[string equal $ld_output ""] == 1} then {

        pass "$rootname1 file should link with $rootname2 file"

        set result [get_sh_arch "${rootname1}_${rootname2}.o"]

        puts $resultfile [format "%-20s %-20s %s" $file1 $file2 $result]

        if {$result == $arch} then {

            pass "$rootname1 file with $rootname2 file should link to arch $arch"

            file delete "${rootname1}_${rootname2}.o"

        } else {

            fail "$rootname1 file with $rootname2 file should link to arch $arch"

        }

    } else {

        fail "$rootname1 file should link with $rootname2 file"

        puts $resultfile [format "%-20s %-20s ERROR" $file1 $file2]

        untested "$rootname2 file with $rootname2 file should link to arch $arch"

    }

}

# This procedure tests that a pair of files that are not

# suposed to link does, in fact, not link.

# It also writes an entry to the arch_results.txt file.

proc test_arch_error { file1 file2 resultfile} {

    global link_output LD

    set name1 [file tail $file1]

    set rootname1 [file rootname $name1]

    set name2 [file tail $file2]

    set rootname2 [file rootname $name2]

    # This must use -r to prevent LD trying to relocate the (unrealistic) file

    send_log "$LD -r -o ${rootname1}_${rootname2}.o $file1 $file2\n"

    catch "exec $LD -r -o ${rootname1}_${rootname2}.o $file1 $file2" ld_output

    send_log $ld_output

    if {[string equal $ld_output ""] == 1} then {

        fail "$rootname1 file should NOT link with $rootname2 file"

        puts $resultfile [format "%-20s %-20s [get_sh_arch ${rootname1}_${rootname2}.o]" $file1 $file2]

    } else {

        pass "$rootname1 file should NOT link with $rootname2 file"

        puts $resultfile [format "%-20s %-20s ERROR" $file1 $file2]

    }

}

# These tests are not suitable for sh-coff because

# coff does not store the architecture information.

if [istarget sh*-*-elf] then {

    global subdir srcdir

    global AS

    # Find all the architectures and assemble all the files

    # we will use for the linker tests.

    set sfilelist [lsort -ascii [glob "$srcdir/$subdir/sh*.s"]]

    set ofilelist {}

    foreach sfile $sfilelist {

        set ofile "[file rootname [file tail $sfile]].o"

        lappend ofilelist $ofile

        set endian "-big"

        if [string equal [big_or_little_endian] " -EL"] then {

            set endian "-little"

        }

        set cmd "$AS $endian -isa=any $sfile -o $ofile"

        verbose -log $cmd

        catch "exec $cmd" as_output

        if ![file exists $ofile] then {

            verbose -log $as_output

            perror "$sfile: assembly failed"

        }

    }

    # Create the default arch ofile

    # This cannot be created with the assembler

    # sh4al-dsp is number 6, sh-unknown is 0

    lappend ofilelist "sh-unknown.o"

    if [string equal [big_or_little_endian] " -EL"] then {

        set cmd {xxd sh4al-dsp.o | sed {s/\(^0000020: .... .... \)06/\100/} | xxd -r - sh-unknown.o}

    } else {

        set cmd {xxd sh4al-dsp.o | sed {s/\(^0000020: .... .... .... ..\)06/\100/} | xxd -r - sh-unknown.o}

    }

    verbose -log $cmd

    catch "exec $cmd" xxd_output

    verbose -log $xxd_output

    if [string equal [get_sh_arch "sh-unknown.o"] "sh4al-dsp"] then {

        perror "sh-unknown.o not generated correctly"

    }

    # Initialise the results file

    set outfile [open "arch_results.txt" w 0666]

    puts $outfile "# Generated file. DO NOT EDIT"

    puts $outfile "#"

    puts $outfile "# This file is generated by ld/testsuite/ld-sh/arch/arch.exp ."

    puts $outfile "# It contains the expected results of the tests."

    puts $outfile "# If the tests are failing because the expected results"

    puts $outfile "# have changed then run 'make check' and copy the new file"

    puts $outfile "# from /ld/arch_results.txt"

    puts $outfile "# to   /ld/testsuite/ld-sh/arch/arch_expected.txt ."

    puts $outfile "# Make sure the new expected results are ALL correct."

    puts $outfile "#"

    puts $outfile [format "# %-18s %-20s %s" "FILE1" "FILE2" "OUTPUT"]

    puts $outfile [format "# %-18s %-20s %s" "-----" "-----" "------"]

    # Open the expected results file and skip the header

    set infile [open "$srcdir/$subdir/arch_expected.txt" r]

    while {[gets $infile line] >= 0 && [string match {\#*} $line]} {verbose -log "reading '$line'"}

    foreach file1 $ofilelist {

        foreach file2 $ofilelist {

            set name1 [file tail $file1]

            set rootname1 [file rootname $name1]

            set name2 [file tail $file2]

            set rootname2 [file rootname $name2]

            # Decode the expected result from the file

            scan $line "%s %s %s" exfile1 exfile2 exarch

            verbose -log "exfile1 = '$exfile1', exfile2 = '$exfile2', exarch = '$exarch'"

            verbose -log "  name1 = '$name1',   name2 = '$name2'"

            if {[string equal $exfile1 $name1] && [string equal $exfile2 $file2]} then {

                # The expected result file makes sense and

                # appears up-to-date (the file and options match)

                if {[string equal $exarch "ERROR"]} then {

                    test_arch_error $file1 $file2 $outfile

                } else {

                    test_arch $file1 $file2 $exarch $outfile

                }

            } else {

                # The expected result file isn't right somehow

                # so just try any old test. This will cause

                # many failures, but will genrate the results file.

                test_arch $file1 $file2 $rootname1 $outfile

            }

            # Read the next line from the expected result file.

            # This is at the end because the process of skipping

            # the header reads the first real line

            if [gets $infile line] then {

                verbose -log "reading '$line'"

            }

        }

    }

    close $infile

    close $outfile

    foreach file $ofilelist {

        file delete $file

    }

}