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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> |
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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 $*