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# libstdc++ "tool init file" for DejaGNU

# Copyright (C) 2001, 2002, 2003, 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.


# Define callbacks and load other libraries.  This file is loaded relatively
# early, and before any other file we write ourselves.  "load_lib" will
# find anything in the DejaGNU installation tree, or in our lib directory.
# "load_gcc_lib" will search the core compiler's .exp collection instead.
#
# The naming rule is that dg.exp looks for "tool-" and runtest.exp looks
# for "tool_" when finding callbacks.  Utility routines we define for
# our callbacks begin with "v3-".
#
# libstdc++_* callbacks we don't define, but could:
# ..._option_help           prints additional --help output
# ..._option_proc (--foo)   process our own options
# ..._init (normal.exp)     called once per test file
# ..._finish                bracketing function for libstdc++_init
# ...-dg-prune              removing output text, see top of system dg.exp
#
# Useful hook:  if ${hostname}_init exists, it will be called, almost
# the last thing before testing begins.  This can be defined in, e.g.,
# ~/.dejagnurc or $DEJAGNU.

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

# system routines
load_lib dg.exp
load_lib libgloss.exp
# compiler routines, then ours
load_gcc_lib target-supports.exp
load_gcc_lib target-supports-dg.exp
load_lib prune.exp
load_lib dg-options.exp
load_gcc_lib target-libpath.exp
load_gcc_lib wrapper.exp

# Useful for debugging.  Pass the name of a variable and the verbosity
# threshold (number of -v's on the command line).
proc v3track { var n } {
    upvar $var val
    verbose "++ $var is $val" $n
}

# Called by v3-init below.  "Static" to this file.
proc v3-copy-files {srcfiles} {
    foreach f $srcfiles {
        if { [catch { set symlink [file readlink $f] } x] } then {
            remote_download target $f
        } else {
            if { [regexp "^/" "$symlink"] } then {
                remote_download target $symlink
            } else {
                set dirname [file dirname $f]
                remote_download target $dirname/$symlink
            }
        }
    }
}

# Called once, during runtest.exp setup.
proc libstdc++_init { testfile } {
    global env
    global v3-sharedlib 
    global srcdir blddir objdir tool_root_dir
    global cxx cxxflags
    global includes
    global gluefile wrap_flags
    global ld_library_path
    global target_triplet

    # We set LC_ALL and LANG to C so that we get the same error
    # messages as expected.
    setenv LC_ALL C
    setenv LANG C

    set blddir [lookfor_file [get_multilibs] libstdc++-v3]
    set flags_file "${blddir}/scripts/testsuite_flags"
    v3track flags_file 2

    # If a test doesn't have special options, use DEFAULT_CXXFLAGS.
    # Use this variable if the behavior
    #   1) only applies to libstdc++ testing
    #   2) might need to be negated 
    # In particular, some tests have to be run without precompiled
    # headers, or without assertions.
    global DEFAULT_CXXFLAGS
    if ![info exists DEFAULT_CXXFLAGS] then {
        set DEFAULT_CXXFLAGS ""
        # Host specific goo here.
        if { [string match "powerpc-*-darwin*" $target_triplet] } {
            append DEFAULT_CXXFLAGS " -multiply_defined suppress"
        } 
    }
    v3track DEFAULT_CXXFLAGS 2

    # By default, we assume we want to run program images.
    global dg-do-what-default
    set dg-do-what-default run

    # Copy any required data files.
    v3-copy-files [glob -nocomplain "$srcdir/data/*.tst"]
    v3-copy-files [glob -nocomplain "$srcdir/data/*.txt"]

    # Locate libgcc.a so we don't need to account for different values of
    # SHLIB_EXT on different platforms
    set gccdir [lookfor_file $tool_root_dir gcc/libgcc.a]
    if {$gccdir != ""} {
        set gccdir [file dirname $gccdir]
    }
    v3track gccdir 3

    # Look for shared library. (ie libstdc++.so.)
    set v3-sharedlib 0
    set sharedlibdir [lookfor_file $blddir src/.libs/libstdc++.so]
    if {$sharedlibdir != ""} {
        if { [string match "*-*-linux*" $target_triplet] && [isnative] } {
            set v3-sharedlib 1
            verbose -log "shared library support detected"
        } 
    }
    v3track v3-sharedlib 3

    # Compute what needs to be added to the existing LD_LIBRARY_PATH.
    if {$gccdir != ""} {
        set ld_library_path ""
        append ld_library_path ":${gccdir}"
        set compiler ${gccdir}/g++
        append ld_library_path ":${blddir}/src/.libs"

        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}"
            }
          }
        }

        set_ld_library_path_env_vars
        if [info exists env(LD_LIBRARY_PATH)] {
          verbose -log "LD_LIBRARY_PATH = $env(LD_LIBRARY_PATH)"
        }
    } else {
        set compiler [transform "g++"]
    }

    # Do a bunch of handstands and backflips for cross compiling and
    # finding simulators...
    if [is_remote host] {
        set header [remote_download host ${blddir}/testsuite/testsuite_hooks.h]
        if { $header == "" } {
            verbose -log "Unable to download ${blddir}/testsuite/testsuite_hooks.h to host."
            return "untested"
        }
      set cxx [transform "g++"]
      set cxxflags "-ggdb3"
      set includes "-I./"
    } else {
        # If we find a testsuite_flags file, we're testing in the build dir.
        if { [file exists $flags_file] } {
            set cxx [exec sh $flags_file --build-cxx]
            set cxxflags [exec sh $flags_file --cxxflags]
            set includes [exec sh $flags_file --build-includes]
        } else {
            set cxx [transform "g++"]
            set cxxflags "-g -O2 -D_GLIBCXX_ASSERT -fmessage-length=0" 
            set includes "-I${srcdir}"
            # Guess at the location of the installed locale files.
            # (It would be nice if "gcc --print-file-name" could find
            # message files, but it cannot.)
            set absolute_cxx [which $cxx]
            if { $absolute_cxx != "" } {
                set localedir "[file dirname $absolute_cxx]/../share/locale"
            }
            set cxxflags "$cxxflags -DLOCALEDIR=\"$localedir\""
        }
    }

    # If a PCH file is available, use it.  We must delay performing
    # this check until $cxx and such have been initialized because we
    # perform a test compilation.  (Ideally, gcc --print-file-name would
    # list PCH files, but it does not.)
    global PCH_CXXFLAGS
    if ![info exists PCH_CXXFLAGS] then {
        set src "config[pid].cc"
        set f [open $src "w"]
        puts $f "int main () {}"
        close $f

        set lines [v3_target_compile $src "config[pid].o" object \
                   "additional_flags=-include additional_flags=bits/stdc++.h"]
        if {$lines == "" } {
            set PCH_CXXFLAGS "-include bits/stdc++.h"
        } else {
            set PCH_CXXFLAGS ""
        }
        file delete $src
        v3track PCH_CXXFLAGS 2
    }

    libstdc++_maybe_build_wrapper "${objdir}/testglue.o"
}

# Callback for cleanup routines.
proc libstdc++_exit { } {
    global gluefile;

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

# Callback from system dg-test.
proc libstdc++-dg-test { prog do_what extra_tool_flags } {
    # Set up the compiler flags, based on what we're going to do.
    switch $do_what {
        "preprocess" {
            set compile_type "preprocess"
            set output_file "[file rootname [file tail $prog]].i"
        }
        "compile" {
            set compile_type "assembly"
            set output_file "[file rootname [file tail $prog]].s"
        }
        "assemble" {
            set compile_type "object"
            set output_file "[file rootname [file tail $prog]].o"
        }
        "link" {
            set compile_type "executable"
            set output_file "./[file rootname [file tail $prog]].exe"
        }
        "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 ""
        }
    }

    set options ""
    if { $extra_tool_flags != "" } {
        verbose -log "extra_tool_flags are:"
        verbose -log $extra_tool_flags
        if { [string first "-x c" $extra_tool_flags ] != -1 } {
            # Short-circut a bunch of complicated goo here for the
            # special case of compiling a test file as a "C" file, not
            # as C++: just use target_compile, instead of the usual
            # gimmicks.
            verbose -log "compiling and executing as C, not C++"
            set compile_type "executable"
            set output_file "./[file rootname [file tail $prog]].exe"
            remote_file build delete $output_file;
            lappend options "additional_flags=$extra_tool_flags"
            set comp_output [target_compile "$prog" "$output_file" "$compile_type" $options];
            set comp_output [ prune_g++_output $comp_output ];
            return [list $comp_output $output_file]
        } else {
            lappend options "additional_flags=$extra_tool_flags"
        }
    }

    # There is a libstdc++_compile made for us by default (via the tool-
    # and-target file), but the defaults are lacking in goodness.
    set comp_output [v3_target_compile "$prog" "$output_file" "$compile_type" $options];
    set comp_output [ prune_g++_output $comp_output ];

    return [list $comp_output $output_file]
}

# True if the library supports wchar_t.
set v3-wchar_t 0

# True if the library supports threads.
set v3-threads 0

# True if the library supports symbol versioning.
set v3-symver 0

# A string naming object files to be linked into all tests.
set v3-test_objs ""

# Called from libstdc++-dg-test above.  Calls back into system's
# target_compile to actually do the work.
proc v3_target_compile { source dest type options } {
    global gluefile 
    global wrap_flags
    global cxx
    global cxxflags
    global includes
    global blddir
    global v3-test_objs

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

    set cxx_final $cxx
    set cxxlibglossflags  [libgloss_link_flags]
    set cxx_final [concat $cxx_final $cxxlibglossflags]
    set cxx_final [concat $cxx_final $cxxflags]
    set cxx_final [concat $cxx_final $includes]

    # Flag setting based on type argument.
    if { $type == "executable" } {
        # Link the support objects into executables.
        set cxx_final [concat $cxx_final ${v3-test_objs}]
    } else {
        if { $type == "sharedlib" } {
            # Don't link in anything.
            set type "executable"
        }
    }

    lappend options "compiler=$cxx_final"

    return [target_compile $source $dest $type $options]
}


# Build the support objects linked in with the libstdc++ tests.  In
# addition, set v3-wchar_t, v3-threads, v3-test_objs, and v3-symver
# appropriately.
proc v3-build_support { } {
    global srcdir
    global v3-wchar_t
    global v3-threads
    global v3-test_objs
    global v3-symver
    global v3-sharedlib

    # Figure out whether or not the library supports certain features.
    set v3-wchar_t 0
    set v3-threads 0
    set v3-symver 0
    set v3-test_objs ""

    set config_src "config.cc"
    set f [open $config_src "w"]
    puts $f "#include <bits/c++config.h>"
    puts $f "#include <bits/gthr.h>"
    close $f
    set preprocessed [v3_target_compile $config_src "" \
                       preprocess "additional_flags=-dN"]
    if { [string first "_GLIBCXX_USE_WCHAR_T" $preprocessed] != -1 } {
        verbose -log "wchar_t support detected"
        set v3-wchar_t 1
    }
    if { [string first "_GLIBCXX_SYMVER" $preprocessed] != -1 } {
        verbose -log "symbol versioning support detected"
        set v3-symver 1
    }
    if { [string first "__GTHREADS" $preprocessed] != -1 } {
        verbose -log "thread support detected"
        set v3-threads 1
    }

    # Build the support objects.
    set source_files \
        [list testsuite_abi.cc testsuite_allocator.cc testsuite_character.cc testsuite_hooks.cc ]
    foreach f $source_files {
        set object_file [file rootname $f].o
        # Compile with "-w" so that warnings issued by the compiler
        # do not prevent compilation.
        if { [v3_target_compile $srcdir/$f $object_file "object" \
                  [list "incdir=$srcdir" "additional_flags=-w"]]
             != "" } {
            error "could not compile $f"
        }
        append v3-test_objs "$object_file "
    }

    # Build the shared support objects.
    if { ${v3-sharedlib} == 1 } {
        set source_files \
            [list testsuite_shared.cc]
        foreach f $source_files {
            set object_file [file rootname $f].so
            # Compile with "-w" so that warnings issued by the compiler
            # do not prevent compilation.
            if { [v3_target_compile $srcdir/$f $object_file "sharedlib" \
             [list "incdir=$srcdir" "additional_flags=-w -shared -fPIC -DPIC"]]
                 != "" } {
                error "could not compile $f"
            }
        }
    }
}

proc check_v3_target_sharedlib { } {
    global v3-sharedlib
    return ${v3-sharedlib}
}

proc check_v3_target_namedlocale { } {
    global et_namedlocale_saved
    global et_namedlocale_target_name
    global tool 

    if { ![info exists et_namedlocale_target_name] } {
        set et_namedlocale_target_name ""
    }

    # If the target has changed since we set the cached value, clear it.
    set current_target [current_target_name]
    if { $current_target != $et_namedlocale_target_name } {
        verbose "check_v3_target_namedlocale: `$et_namedlocale_target_name'" 2
        set et_namedlocale_target_name $current_target
        if [info exists et_namedlocale_saved] {
            verbose "check_v3_target_namedlocale: removing cached result" 2
            unset et_namedlocale_saved
        }
    }

    if [info exists et_namedlocale_saved] {
        verbose "check_v3_target_namedlocale: using cached result" 2
    } else {
        set et_namedlocale_saved 0

        # Set up, compile, and execute a C++ test program that tries to use
        # all the required named locales.
        set src nlocale[pid].cc
        set exe nlocale[pid].x

        set f [open $src "w"]
        puts $f "#include <locale>"
        puts $f "using namespace std;"  
        puts $f "int main ()"
        puts $f "{"
        puts $f "  try" 
        puts $f "  {" 
        puts $f "     locale(\"\");"
        puts $f "     locale(\"de_DE\");"
        puts $f "     locale(\"de_DE.ISO-8859-15@euro\");"
        puts $f "     locale(\"de_DE@euro\");"
        puts $f "     locale(\"en_HK\");"
        puts $f "     locale(\"en_PH\");"
        puts $f "     locale(\"en_US\");"
        puts $f "     locale(\"en_US.ISO-8859-1\");"
        puts $f "     locale(\"en_US.ISO-8859-15\");"
        puts $f "     locale(\"en_US.UTF-8\");"
        puts $f "     locale(\"es_ES\");"
        puts $f "     locale(\"es_MX\");"
        puts $f "     locale(\"fr_FR\");"
        puts $f "     locale(\"fr_FR@euro\");"
        puts $f "     locale(\"is_IS\");"
        puts $f "     locale(\"is_IS.UTF-8\");"
        puts $f "     locale(\"it_IT\");"
        puts $f "     locale(\"ja_JP.eucjp\");"
        puts $f "     locale(\"se_NO.UTF-8\");"
        puts $f "     locale(\"ta_IN\");"
        puts $f "     locale(\"zh_TW\");"
        puts $f "     return 0;"
        puts $f "  }"
        puts $f "  catch(...)"
        puts $f "  {"
        puts $f "     return 1;"
        puts $f "  }"   
        puts $f "}"
        close $f

        set lines [v3_target_compile $src $exe executable ""]
        file delete $src

        if [string match "" $lines] {
            # No error message, compilation succeeded.
            set result [${tool}_load "./$exe" "" ""]
            set status [lindex $result 0]
            remote_file build delete $exe

            verbose "check_v3_target_namedlocale: status is <$status>" 2

            if { $status == "pass" } {
                set et_namedlocale_saved 1
            }
        } else {
            verbose "check_v3_target_namedlocale: compilation failed" 2
        }
    }
    return $et_namedlocale_saved
}

proc check_v3_target_cxa_atexit { } {
    global et_cxa_atexit
    global et_cxa_atexit_target_name
    global tool 

    if { ![info exists et_cxa_atexit_target_name] } {
        set et_cxa_atexit_target_name ""
    }

    # If the target has changed since we set the cached value, clear it.
    set current_target [current_target_name]
    if { $current_target != $et_cxa_atexit_target_name } {
        verbose "check_v3_target_cxa_atexit: `$et_cxa_atexit_target_name'" 2
        set et_cxa_atexit_target_name $current_target
        if [info exists et_cxa_atexit] {
            verbose "check_v3_target_cxa_atexit: removing cached result" 2
            unset et_cxa_atexit
        }
    }

    if [info exists et_cxa_atexit] {
        verbose "check_v3_target_cxa_atexit: using cached result" 2
    } else {
        set et_cxa_atexit 0

        # Set up, compile, and execute a C++ test program that depends
        # on correct ordering of static object destructors. This is
        # indicative of the presence and use of __cxa_atexit.
        set src cxaatexit[pid].cc
        set exe cxaatexit[pid].x

        set f [open $src "w"]
        puts $f "#include <stdlib.h>"
        puts $f "static unsigned int count;"
        puts $f "struct X"
        puts $f "{"
        puts $f "  X() { count = 1; }"
        puts $f "  ~X()"
        puts $f "  {"
        puts $f "    if (count != 3)"
        puts $f "      exit(1);"
        puts $f "    count = 4;"
        puts $f "  }"
        puts $f "};"
        puts $f "void f()"
        puts $f "{"
        puts $f "  static X x;"
        puts $f "}"
        puts $f "struct Y"
        puts $f "{"
        puts $f "  Y() { f(); count = 2; }"
        puts $f "  ~Y()"
        puts $f "  {"
        puts $f "    if (count != 2)"
        puts $f "      exit(1);"
        puts $f "    count = 3;"
        puts $f "  }"
        puts $f "};"
        puts $f "Y y;"
        puts $f "int main()"
        puts $f "{ return 0; }"
        close $f

        set lines [v3_target_compile $src $exe executable ""]
        file delete $src

        if [string match "" $lines] {
            # No error message, compilation succeeded.
            set result [${tool}_load "./$exe" "" ""]
            set status [lindex $result 0]
            remote_file build delete $exe

            verbose "check_v3_target_cxa_atexit: status is <$status>" 2

            if { $status == "pass" } {
                set et_cxa_atexit 1
            }
        } else {
            verbose "check_v3_target_cxa_atexit: compilation failed" 2
        }
    }
    return $et_cxa_atexit
}

proc check_v3_target_debug_mode { } {
    global cxxflags
    global et_debug_mode

    global tool 

    if { ![info exists et_debug_mode_target_name] } {
        set et_debug_mode_target_name ""
    }

    # If the target has changed since we set the cached value, clear it.
    set current_target [current_target_name]
    if { $current_target != $et_debug_mode_target_name } {
        verbose "check_v3_target_debug_mode: `$et_debug_mode_target_name'" 2
        set et_debug_mode_target_name $current_target
        if [info exists et_debug_mode] {
            verbose "check_v3_target_debug_mode: removing cached result" 2
            unset et_debug_mode
        }
    }

    if [info exists et_debug_mode] {
        verbose "check_v3_target_debug_mode: using cached result" 2
    } else {
        set et_debug_mode 0

        # Set up, compile, and execute a C++ test program that depends
        # on debug mode working.
        set src debug_mode[pid].cc
        set exe debug_mode[pid].exe

        set f [open $src "w"]
        puts $f "#include <string>"
        puts $f "using namespace std;"  
        puts $f "int main()"
        puts $f "{ return 0; }"
        close $f

        set cxxflags_saved $cxxflags
        set cxxflags "$cxxflags -Werror -O0 -D_GLIBCXX_DEBUG"
        set lines [v3_target_compile $src $exe executable ""]
        set cxxflags $cxxflags_saved
        file delete $src

        if [string match "" $lines] {
            # No error message, compilation succeeded.
            set et_debug_mode 1
        }
    }
    verbose "check_v3_target_debug_mode: $et_debug_mode" 2
    return $et_debug_mode
}