#   Copyright (C) 2003 Free Software Foundation, Inc.

# 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 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.

proc load_gcc_lib { filename } {
    global srcdir
    load_file $srcdir/../../gcc/testsuite/lib/$filename
}

load_lib dg.exp
load_lib libgloss.exp
load_gcc_lib wrapper.exp


# Define libffi callbacks for dg.exp.

proc libffi-dg-test-1 { target_compile prog do_what extra_tool_flags } {
    # Set up the compiler flags, based on what we're going to do.

    set options [list]
    switch $do_what {
	"compile" {
	    set compile_type "assembly"
	    set output_file "[file rootname [file tail $prog]].s"
	}
	"link" {
	    set compile_type "executable"
	    set output_file "[file rootname [file tail $prog]].exe"
	    # The following line is needed for targets like the i960 where
	    # the default output file is b.out.  Sigh.
	}
	"run" {
	    set compile_type "executable"
	    # FIXME: "./" is to cope with "." not being in $PATH.
	    # Should this be handled elsewhere?
	    # YES.
	    set output_file "./[file rootname [file tail $prog]].exe"
	    # This is the only place where we care if an executable was
	    # created or not.  If it was, dg.exp will try to run it.
	    remote_file build delete $output_file;
	}
	default {
	    perror "$do_what: not a valid dg-do keyword"
	    return ""
	}
    }

    if { $extra_tool_flags != "" } {
	lappend options "additional_flags=$extra_tool_flags"
    }

    set comp_output [libffi_target_compile "$prog" "$output_file" "$compile_type" $options];


    return [list $comp_output $output_file]
}


proc libffi-dg-test { prog do_what extra_tool_flags } {
    return [libffi-dg-test-1 target_compile $prog $do_what $extra_tool_flags]
}

proc libffi-init { args } {
    global gluefile wrap_flags;
    global srcdir
    global blddirffi
    global objdir
    global blddircxx
    global TOOL_OPTIONS
    global tool
    global libffi_include
    global libffi_link_flags
    global tool_root_dir

    set blddirffi [lookfor_file [get_multilibs] libffi]
    verbose "libffi $blddirffi"
    set blddircxx [lookfor_file [get_multilibs] libstdc++-v3]
    verbose "libstdc++ $blddircxx"

    set gccdir [lookfor_file $tool_root_dir gcc/libgcc.a]
    if {$gccdir != ""} {
	set gccdir [file dirname $gccdir]
    }
    verbose "gccdir $gccdir"

    set ld_library_path "."
    append ld_library_path ":${gccdir}"

    set compiler "${gccdir}/xgcc"
    if { [is_remote host] == 0 && [which $compiler] != 0 } {
	foreach i "[exec $compiler --print-multi-lib]" {
	    set mldir ""
	    regexp -- "\[a-z0-9=/\.-\]*;" $i mldir
	    set mldir [string trimright $mldir "\;@"]
	    if { "$mldir" == "." } {
		continue
	    }
	    if { [llength [glob -nocomplain ${gccdir}/${mldir}/libgcc_s*.so.*]] >= 1 } {
		append ld_library_path ":${gccdir}/${mldir}"
	    }
	}
    }
    # add the library path for libffi.
    append ld_library_path ":${blddirffi}/.libs"
    # add the library path for libstdc++ as well.
    append ld_library_path ":${blddircxx}/src/.libs"

    verbose "ld_library_path: $ld_library_path"

    # Point to the Libffi headers in libffi.
    set libffi_include "${blddirffi}/include"
    verbose "libffi_include $libffi_include"

    set libffi_dir  "${blddirffi}/.libs"
    verbose "libffi_dir $libffi_dir"
    if { $libffi_dir != "" } {
	set libffi_dir [file dirname ${libffi_dir}]
	set libffi_link_flags "-L${libffi_dir}/.libs"
	lappend libffi_link_flags "-L${blddircxx}/src/.libs"
    }

    # On IRIX 6, we have to set variables akin to LD_LIBRARY_PATH, but
    # called LD_LIBRARYN32_PATH (for the N32 ABI) and LD_LIBRARY64_PATH
    # (for the 64-bit ABI).  The right way to do this would be to modify
    # unix.exp -- but that's not an option since it's part of DejaGNU
    # proper, so we do it here.
    # The same applies to darwin (DYLD_LIBRARY_PATH), solaris 32 bit
    # (LD_LIBRARY_PATH_32), solaris 64 bit (LD_LIBRARY_PATH_64), and HP-UX
    # (SHLIB_PATH).
    if {![is_remote target]} {
	set ld_path "LD_LIBRARY_PATH SHLIB_PATH LD_LIBRARYN32_PATH LD_LIBRARY64_PATH LD_LIBRARY_PATH_32 LD_LIBRARY_PATH_64 DYLD_LIBRARY_PATH"
	foreach path $ld_path {
	    if [info exists env($path)] {
		# If we've already added these directories once, keep
		# the existing path.
		if {$ld_library_path != $env($path)
		    && [string first $ld_library_path: $env($path)] != 0} {
		    setenv $path "$ld_library_path:$env($path)"
		}
	    } else {
		setenv $path "$ld_library_path"
	    }
	}
    }
    libffi_maybe_build_wrapper "${objdir}/testglue.o"
}

proc libffi_exit { } {
    global gluefile;

    if [info exists gluefile] {
	file_on_build delete $gluefile;
	unset gluefile;
    }
}

proc libffi_target_compile { source dest type options } {
    global gluefile wrap_flags;
    global srcdir
    global blddirffi
    global TOOL_OPTIONS
    global libffi_link_flags
    global libffi_include
    global target_triplet


    if { [target_info needs_status_wrapper]!="" && [info exists gluefile] } {
	lappend options "libs=${gluefile}"
	lappend options "ldflags=$wrap_flags"
    }

    # TOOL_OPTIONS must come first, so that it doesn't override testcase
    # specific options.
    if [info exists TOOL_OPTIONS] {
	lappend  options [concat "additional_flags=$TOOL_OPTIONS" $options];
    }

    # search for ffi_mips.h in srcdir, too
    lappend options "additional_flags=-I${libffi_include} -I${srcdir}/../include  -I${libffi_include}/.."
    lappend options "additional_flags=${libffi_link_flags}"

    if { [string match "powerpc-*-darwin*" $target_triplet] } {
	lappend options "libs= -lgcc_s"
    }

    lappend options "libs= -lffi"

    verbose "options: $options"
    return [target_compile $source $dest $type $options]
}

# Utility routines.

#
# search_for -- looks for a string match in a file
#
proc search_for { file pattern } {
    set fd [open $file r]
    while { [gets $fd cur_line]>=0 } {
	if [string match "*$pattern*" $cur_line] then {
	    close $fd
	    return 1
	}
    }
    close $fd
    return 0
}

# Modified dg-runtest that can cycle through a list of optimization options
# as c-torture does.
proc libffi-dg-runtest { testcases default-extra-flags } {
    global runtests

    foreach test $testcases {
	# If we're only testing specific files and this isn't one of
	# them, skip it.
	if ![runtest_file_p $runtests $test] {
	    continue
	}

	# Look for a loop within the source code - if we don't find one,
	# don't pass -funroll[-all]-loops.
	global torture_with_loops torture_without_loops
	if [expr [search_for $test "for*("]+[search_for $test "while*("]] {
	    set option_list $torture_with_loops
	} else {
	    set option_list $torture_without_loops
	}

	set nshort [file tail [file dirname $test]]/[file tail $test]

	foreach flags $option_list {
	    verbose "Testing $nshort, $flags" 1
	    dg-test $test $flags ${default-extra-flags}
	}
    }
}


# Like check_conditional_xfail, but callable from a dg test.

proc dg-xfail-if { args } {
    set args [lreplace $args 0 0]
    set selector "target [join [lindex $args 1]]"
    if { [dg-process-target $selector] == "S" } {
	global compiler_conditional_xfail_data
	set compiler_conditional_xfail_data $args
    }
}


# We need to make sure that additional_files and additional_sources
# are both cleared out after every test.  It is not enough to clear
# them out *before* the next test run because gcc-target-compile gets
# run directly from some .exp files (outside of any test).  (Those
# uses should eventually be eliminated.)

# Because the DG framework doesn't provide a hook that is run at the
# end of a test, we must replace dg-test with a wrapper.

if { [info procs saved-dg-test] == [list] } {
    rename dg-test saved-dg-test

    proc dg-test { args } {
	global additional_files
	global additional_sources
	global errorInfo

	if { [ catch { eval saved-dg-test $args } errmsg ] } {
	    set saved_info $errorInfo
	    set additional_files ""
	    set additional_sources ""
	    error $errmsg $saved_info
	}
	set additional_files ""
	set additional_sources ""
    }
}

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