#! /usr/bin/perl -w

# Copyright 2001, 2003 Free Software Foundation, Inc.

#

#  This file is part of the GNU MP Library.

#

#  The GNU MP Library is free software; you can redistribute it and/or modify

#  it under the terms of either:

#

#    * the GNU Lesser General Public License as published by the Free

#      Software Foundation; either version 3 of the License, or (at your

#      option) any later version.

#

#  or

#

#    * 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.

#

#  or both in parallel, as here.

#

#  The GNU MP Library 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 copies of the GNU General Public License and the

#  GNU Lesser General Public License along with the GNU MP Library.  If not,

#  see https://www.gnu.org/licenses/.

# Usage:  perl t-m68k-defs.pl [-t]

#

# Run this in the mpn/m68k source directory to check that m68k-defs.m4 has

# m68k_defbranch()s or m68k_definsn()s for each instruction used in *.asm

# and */*.asm.  Print nothing if everything is ok.  The -t option prints

# some diagnostic traces.

use strict;

use Getopt::Std;

my %opt;

getopts('t', \%opt);

my %branch;

my %insn;

open(FD, "

    or die "Cannot open m68k-defs.m4: $!\nIs this the mpn/m68k source directory?\n";

my ($srcdir, $top_srcdir);

while (<FD>) {

    if (/^m68k_defbranch\(\s*(.*)\)/) { $branch{"b".$1} = 1; }

    if (/^m68k_definsn\(\s*(.*),\s*(.*)\)/) { $insn{$1.$2} = 1; }

}

close(FD);

print "branches: ", join(" ",keys(%branch)), "\n" if $opt{'t'};

print "insns: ", join(" ",keys(%insn)), "\n" if $opt{'t'};

foreach my $file (glob("*.asm"), glob("*/*.asm")) {

    print "file $file\n" if $opt{'t'};

    open(FD, "<$file") or die "Cannot open $file: $!";

    while (<FD>) {

	if (/^[ \t]*C/) { next; };

	if (/^\t([a-z0-9]+)/) {

	    my $opcode = $1;

	    print "opcode $1\n" if $opt{'t'};

	    # instructions with an l, w or b suffix should have a definsn

	    # (unless they're already a defbranch)

	    if ($opcode =~ /[lwb]$/

		&& ! defined $insn{$opcode}

		&& ! defined $branch{$opcode})

	    {

		print "$file: $.: missing m68k_definsn: $opcode\n";

	    }

	    # instructions bXX should have a defbranch (unless they're

	    # already a definsn)

	    if ($opcode =~ /^b/

		&& ! defined $insn{$opcode}

		&& ! defined $branch{$opcode})

	    {

		print "$file: $.: missing m68k_defbranch: $opcode\n";

	    }

	}

    }

    close(FD);

}