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# Or1ksim library expect test functions for use with DejaGNU under automake

# Copyright (C) 2010 Embecosm Limited

# Contributor Jeremy Bennett 

# This file is part of OpenRISC 1000 Architectural Simulator.

# 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, see .  */

# -----------------------------------------------------------------------------

# This code is commented throughout for use with Doxygen.

# -----------------------------------------------------------------------------

# -----------------------------------------------------------------------------

#! Run a libor1ksim program with the supplied config_file and target program.

#

#! @param[in] testname    The name of the test

#! @param[in] match_list  A list of expected responses

#! @param[in] libprog     The libor1ksim program

#! @param[in] config      The or1ksim config file to use

#! @param[in] or1kprog    The program image to use on libprog

#! @param[in] args        Any other arguments

# -----------------------------------------------------------------------------

proc run_libsim { testname match_list libprog config or1kprog args } {

    global verbose

    global srcdir

    global objdir

    # Construct the config filename or use the default

    if {0 == [string length $config]} {

        set config "default.cfg";

    }

    set libprog_name  "$objdir/test-code/$libprog"

    set config_name   "$srcdir/libsim.tests/$config";

    set or1kprog_name "$objdir/test-code-or1k/$or1kprog"

    set command_line "$libprog_name $config_name $or1kprog_name $args"

    if { $verbose > 1 } {

        send_user "starting $command_line\n"

    }

    # Run the program.

    eval "spawn $command_line"

    # Try each matchstr in turn, counting the lines for error reporting

    set match_line 0;

    foreach matchstr $match_list {

        set match_line [expr {$match_line + 1}];

        if { $verbose > 2 } {

            send_user "matching |$matchstr|\n";

        }

        # The matching is slightly tricky. In general we want to find warnings

        # or errors. However expect will look at the entire buffer, so if we

        # have the match string *after* an error or warning message, then the

        # match will still work OK.

        # The trick is to do some post-processing of the matched buffer to see

        # if there was a preceding Warning or ERROR message.

        expect {

            $matchstr {

                set matchlen [string length $matchstr]

                set buflen [string length $expect_out(buffer)]

                set lastch [expr {$buflen - $matchlen}]

                set prefix [string range $expect_out(buffer) 0 $lastch]

                if { [string match *ERROR* $prefix] } {

                    # We skipped an error

                    fail "$testname: ERROR seeking match line $match_line";

                    return

                } elseif { [string match *Warning* $prefix] } {

                    # We skipped a warning

                    fail "$testname: Warning seeking match line $match_line";

                    return;

                }

                # Otherwise silently match

            }

            ERROR {

                # An error other than the one we seek

                fail "$testname: ERROR seeking match line $match_line";

                return

            }

            Warning {

                # Any warning

                fail "$testname: Warning seeking match line $match_line";

                return;

            }

            eof {

                fail "$testname: hit EOF seeking match line $match_line";

                return

            }

            timeout {

                perror "Timeout";

                unresolved "$testname: timeout";

                return

            }

        }

    }

    # If we get here we've passed

    pass $testname;

}

# Timeout 3 seconds is plenty as default

set timeout 3