view extra/ar @ 408:0af33282b518

Fix cycle counting for relative branches. The original creator of the cycle counting code appears to have mangled two different approaches to counting the cycles for relative branches into the final product which led to counting too many cycles for the branch instructions. The comments in the cycle table were correct but the code was doing some incorrect things. Also add the missing LBRN entry to the cycle table. The one labelled LBRN was not, in fact, LBRN, but one of the actual useful branch instructions.
author William Astle <lost@l-w.ca>
date Thu, 03 Mar 2016 21:38:21 -0700
parents 84eb35251849
children 92cabf300986
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#!/bin/sh
#
#
# Copyright 2009 by William Astle <lost@l-w.ca>
#
#This file is part of LWTOOLS.
#
#LWTOOLS 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 <http://www.gnu.org/licenses/>.

# this was based somewhat on the "ar" script from gcc6809

# This script is a frontend to the lwar library manager, to make it
# look more like GNU ar.  Not all ar features are supported here.
# It basically translates ar style options into lwar format.

# Parse and translate command-line options

# ar options cheatsheet:
# r: insert (with replace)
# c: create archive
# u: only replace newer files
# v: verbose mode
# x: extract files from archive

options=$1; shift
case $options in
	rc|cru|-rc|-cru)
		options="--replace --create"
		;;
	rv)
		options="--replace"
		;;
	x|-x)
		options="--extract"
		;;
	-C|--cache)
		exit 0
		;;
	*)
		options="--replace --create $options"
		if [ "$libname" = "" ]; then
			libname=$options
		fi
		;;
esac

if [ "x$options" = "x" ]; then
	echo "ar (m6809): no options given"
	exit 1
fi

# Run the real lwar with translated options.
exec lwar $options $*