# Copyright 2008 Castle Technology Ltd
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
package RiscosLib;

require Exporter;
@ISA = Exporter;
@EXPORT = qw(regmask SWINumberFromString);

for $i (0..7) { $in[$i] = 1<<$i; $out[$i] = 1<<(31-$i); }

sub regmask {
	my $ir = shift;
	my $or = shift;
	my $mask = 0;
	while (@$ir) { $mask |= $in[ shift(@$ir) ]; };
	while (@$or) { $mask |= $out[ shift(@$or) ]; };
	$mask;
}

sub SWINumberFromString {
	my $str = shift()."\n";
	syscall(57,2,$str);
}


1;

