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# Copyright (C) 2006, 2007, 2008, 2009, 2010 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 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 GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

# This file was written by James A. Morrison (ja2morri@uwaterloo.ca)
# based on gcc.exp written by Rob Savoye (rob@cygnus.com).

# This file is loaded by the tool init file (eg: unix.exp).  It provides
# default definitions for gnat_start, etc. and other supporting cast members.

# These globals are used if no compiler arguments are provided.
# They are also used by the various testsuites to define the environment:
# where to find stdio.h, libc.a, etc.

load_lib libgloss.exp
load_lib prune.exp
load_lib gcc-defs.exp
load_lib timeout.exp

#
# GNAT_UNDER_TEST is the compiler under test.
#

#
# default_gnat_version -- extract and print the version number of the compiler
#

proc default_gnat_version { } {
    global GNAT_UNDER_TEST

    gnat_init

    # ignore any arguments after the command
    set compiler [lindex $GNAT_UNDER_TEST 0]

    if ![is_remote host] {
        set compiler_name [which $compiler]
    } else {
        set compiler_name $compiler
    }

    # verify that the compiler exists
    if { $compiler_name != 0 } then {
        set tmp [remote_exec host "$compiler -v"]
        set status [lindex $tmp 0]
        set output [lindex $tmp 1]
        regexp " version \[^\n\r\]*" $output version
        if { $status == 0 && [info exists version] } then {
            clone_output "$compiler_name $version\n"
        } else {
            clone_output "Couldn't determine version of $compiler_name: $output\n"
        }
    } else {
        # compiler does not exist (this should have already been detected)
        warning "$compiler does not exist"
    }
}

# gnat_init -- called at the start of each .exp script.
#
# There currently isn't much to do, but always using it allows us to
# make some enhancements without having to go back and rewrite the scripts.
#

set gnat_initialized 0

proc gnat_init { args } {
    global rootme
    global tmpdir
    global libdir
    global gluefile wrap_flags
    global gnat_initialized
    global GNAT_UNDER_TEST
    global TOOL_EXECUTABLE
    global gnat_libgcc_s_path
    global gnat_target_current

    set gnat_target_current ""

    if { $gnat_initialized == 1 } { return }

    if ![info exists GNAT_UNDER_TEST] then {
        if [info exists TOOL_EXECUTABLE] {
            set GNAT_UNDER_TEST "$TOOL_EXECUTABLE"
        } else {
            set GNAT_UNDER_TEST "[local_find_gnatmake]"
        }
    }

    if ![info exists tmpdir] then {
        set tmpdir /tmp
    }

    set gnat_libgcc_s_path "${rootme}"
    # Leave this here since Ada should support multilibs at some point.
    set compiler [lindex $GNAT_UNDER_TEST 0]
#    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 ${rootme}/${mldir}/libgcc_s*.so.*]] >= 1 } {
#               append gnat_libgcc_s_path ":${rootme}/${mldir}"
#           }
#       }
#    }
}

proc gnat_target_compile { source dest type options } {
    global rootme
    global tmpdir
    global gluefile wrap_flags
    global srcdir
    global GNAT_UNDER_TEST
    global TOOL_OPTIONS
    global ld_library_path
    global gnat_libgcc_s_path
    global gnat_target_current

    # If we detect a change of target, we need to recompute both
    # GNAT_UNDER_TEST and the appropriate RTS.
    if { $gnat_target_current!="[current_target_name]" } {
        set gnat_target_current "[current_target_name]"
        if [info exists TOOL_OPTIONS] {
            set rtsdir "[get_multilibs ${TOOL_OPTIONS}]/libada"
        } else {
            set rtsdir "[get_multilibs]/libada"
        }
        if [info exists TOOL_EXECUTABLE] {
            set GNAT_UNDER_TEST "$TOOL_EXECUTABLE"
        } else {
            set GNAT_UNDER_TEST "[local_find_gnatmake]"
        }
        set GNAT_UNDER_TEST "$GNAT_UNDER_TEST --RTS=$rtsdir"

        # gnatlink looks for system.ads itself and has no --RTS option, so
        # specify via environment
        setenv ADA_INCLUDE_PATH "$rtsdir/adainclude"
        setenv ADA_OBJECTS_PATH "$rtsdir/adainclude"
    }

    set ld_library_path ".:${gnat_libgcc_s_path}"
    lappend options "compiler=$GNAT_UNDER_TEST -q -f"
    lappend options "timeout=[timeout_value]"

    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] {
        set options [concat "additional_flags=$TOOL_OPTIONS" $options]
    }

    # If we have built libada along with the compiler, point the test harness
    # at it (and associated headers).

#    set sourcename [string range $source 0 [expr [string length $source] - 5]]
#    set dest ""

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

#
# gnat_pass -- utility to record a testcase passed
#

proc gnat_pass { testcase cflags } {
    if { "$cflags" == "" } {
        pass "$testcase"
    } else {
        pass "$testcase, $cflags"
    }
}

#
# gnat_fail -- utility to record a testcase failed
#

proc gnat_fail { testcase cflags } {
    if { "$cflags" == "" } {
        fail "$testcase"
    } else {
        fail "$testcase, $cflags"
    }
}

#
# gnat_finish -- called at the end of every .exp script that calls gnat_init
#
# The purpose of this proc is to hide all quirks of the testing environment
# from the testsuites.  It also exists to undo anything that gnat_init did
# (that needs undoing).
#

proc gnat_finish { } {
    # The testing harness apparently requires this.
    global errorInfo

    if [info exists errorInfo] then {
        unset errorInfo
    }

    # Might as well reset these (keeps our caller from wondering whether
    # s/he has to or not).
    global prms_id bug_id
    set prms_id 0
    set bug_id 0
}

proc gnat_exit { } {
    global gluefile

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

# Prune messages from GNAT that aren't useful.

proc prune_gnat_output { text } {
    #send_user "Before:$text\n"
    regsub -all "(^|\n)\[^\n\]*: In (function|method) \[^\n\]*" $text "" text
    regsub -all "(^|\n)\[^\n\]*: At top level:\[^\n\]*" $text "" text

    # prune the output from gnatmake.
    regsub -all "(^|\n)\[^\n\]*gnatmake: [^\n\]*" $text "" text

    # It would be nice to avoid passing anything to gnat that would cause it to
    # issue these messages (since ignoring them seems like a hack on our part),
    # but that's too difficult in the general case.  For example, sometimes
    # you need to use -B to point gnat at crt0.o, but there are some targets
    # that don't have crt0.o.
    regsub -all "(^|\n)\[^\n\]*file path prefix \[^\n\]* never used" $text "" text
    regsub -all "(^|\n)\[^\n\]*linker input file unused since linking not done" $text "" text

    #send_user "After:$text\n"

    return $text
}

# find_gnatmake for some version of DejaGnu will hardcode a -I...rts/ada flag
# which prevent multilib from working, so define a new one.

proc local_find_gnatmake {} {
    global tool_root_dir

    if ![is_remote host] {
        set file [lookfor_file $tool_root_dir gnatmake]
        if { $file == "" } {
        set file [lookfor_file $tool_root_dir gcc/gnatmake]
        }
        if { $file != "" } {
        set root [file dirname $file]
        # Need to pass full --GCC, including multilib flags, to gnatlink,
        # otherwise gcc from PATH is invoked.
        set dest [target_info name]
        set gnatlink_gcc "--GCC=$root/xgcc -B$root [board_info $dest multilib_flags]"
        # Escape blanks to get them through DejaGnu's exec machinery.
        regsub -all {\s} "$gnatlink_gcc" {\\&} gnatlink_gcc
        set CC "$file --GCC=$root/xgcc --GNATBIND=$root/gnatbind --GNATLINK=$root/gnatlink -cargs -B$root -largs $gnatlink_gcc -margs";
        } else {
        set CC [transform gnatmake]
        }
    } else {
        set CC [transform gnatmake]
    }
    return $CC
}

# If this is an older version of DejaGnu (without runtest_file_p),
# provide one and assume the old syntax: foo1.exp bar1.c foo2.exp bar2.c.
# This can be deleted after next DejaGnu release.

if { [info procs runtest_file_p] == "" } then {
    proc runtest_file_p { runtests testcase } {
        if { $runtests != "" && [regexp "\[.\]\[cC\]" $runtests] } then {
            if { [lsearch $runtests [file tail $testcase]] >= 0 } then {
                return 1
            } else {
                return 0
            }
        }
        return 1
    }
}

# Provide a definition of this if missing (delete after next DejaGnu release).

if { [info procs prune_warnings] == "" } then {
    proc prune_warnings { text } {
        return $text
    }
}