# Copyright (C) 2006-2021 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.

load_lib prune.exp
load_lib gcc-defs.exp
load_lib gcc.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 --version"]
	set status [lindex $tmp 0]
	set output [lindex $tmp 1]
	regexp "^GNATMAKE (\[^\n\r\]*)" $output verline version
	if { $status == 0 && [info exists version] } then {
	    # test_summary expects "version" as second field.
	    clone_output "$compiler_name version $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_version -- Call default_gnat_version, so we can override it if needed.
#

proc gnat_version { } {
    default_gnat_version
}

#
# gnat_init -- called at the start of each .exp script.
#

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_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
    }
}

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 gnat_target_current
    global TEST_ALWAYS_FLAGS

    # dg-require-effective-target tests must be compiled as C.
    if [ string match "*.c" $source ] then {
	return [gcc_target_compile $source $dest $type $options]
    }

    # 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"
	# Always log so compilations can be repeated manually.
	verbose -log "ADA_INCLUDE_PATH=$rtsdir/adainclude"
	verbose -log "ADA_OBJECTS_PATH=$rtsdir/adainclude"
    }

    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"
    }

    # TEST_ALWAYS_FLAGS are flags that should be passed to every
    # compilation.  They are passed first to allow individual
    # tests to override them.
    if [info exists TEST_ALWAYS_FLAGS] {
	set options [concat "{additional_flags=$TEST_ALWAYS_FLAGS}" $options]
    }

    # 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]
    }

    set options [concat "{ada}" $options]

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

# 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
}

proc find_gnatclean {} {
    global tool_root_dir

    if ![is_remote host] {
        set file [lookfor_file $tool_root_dir gnatclean]
        if { $file == "" } {
	    set file [lookfor_file $tool_root_dir gcc/gnatclean]
        }
        if { $file != "" } {
	    set gnatclean $file;
        } else {
	    set gnatclean [transform gnatclean]
        }
    } else {
        set gnatclean [transform gnatclean]
    }
    return $gnatclean
}

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