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view extra/ld @ 241:d0e9dbe9afbe
Add new heuristic for resolving instruction sizes.
Add new heuristic for resolving instruction sizes. This applies to the the
decision between extended and base page addressing by calculating the range
of possible addresses (if reasonably knowable) and deciding on whether to
force extended addressing based on that. (If the whole range is outside the
direct page, extended addressing is required.)
author | William Astle <lost@l-w.ca> |
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date | Sun, 23 Sep 2012 13:06:43 -0600 |
parents | 82957c407577 |
children | 26d2791672b1 |
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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 "as" script from gcc6809 #echo "LWTOOLS-ld $0 $*" path_to_lwlink=lwlink # Set defaults. Some are based on the target type, which is # determined by the name by which the program was invoked. output_file=a.out libpaths= libs= stdlibpaths="-L=/usr/local/lib -L=/usr/lib -L=/lib" verbose= if [ "$verbose" = 1 ]; then echo "$0 $@" fi case $0 in *m6809-coco-*) options="--format=decb" # options="-b .text=0x2000 -b .data=0x7000 -b .bss=0x7C00 -b .ctors=0x7F00 -b .dtors=0x7F80 -b vector=0x7FF0" # aslink_options="-nwxst" # exe_suffix=.bin ;; *) options="--format=decb" # options="-b .text=0x8000 -b .data=0x1000 -b .bss=0x0100 -b .ctors=0xFD00 -b .dtors=0xFE00 -b vector=0xFFF0" # aslink_options="-nwxso" # exe_suffix=.s19 ;; esac while [ "$*" != "" ]; do arg=$1; shift case $arg in -d|-dc|-dp) # force allocation of space to common symbols # even if relocatable output file is specified # not supported by targets ;; -X) # strip unneeded stuff # ignored - really just a no-op ;; -gn) # Generate NoICE debug file # ignored because debugging not supported by targets ;; -gs) # Generate SDCC debug file # ignored because debugging not supported by targets ;; -o) output_file=$1; shift ;; -L*) arg=${arg#-L} libpaths="$libpaths --library-path=$arg" ;; -l*) arg=${arg#-l} libs="$libs --library=$arg" ;; --section-start) section_value=$1; shift options="$options --section-base=$section_value" ;; --map) map_file=$1; shift options="$options --map=$map_file" ;; -Tbss) options="$options --section-base=.bss=$1"; shift ;; -Tdata) options="$options --section-base=.data=$1"; shift ;; -Ttext|-Tcode) options="$options --section-base=.text=$1"; shift ;; -v|--verbose) verbose=1 ;; *crt0.o) startup_files=$arg ;; -g) # Ignored by GNU ld; we should do the same true ;; -h|--help) echo "ld (m6809)" exit 0 ;; -T) echo "-T scripts not supported"; exit 1; ;; --format-lwex) options="$options --format=lwex" ;; --sysroot=*) options="$options $arg" ;; -nostdlib) stdlibpaths= ;; -e) options="$options --entry=$1" shift ;; --entry) options="$options $arg" ;; -*) echo "ld (m6809): unknown option $arg" exit 1 ;; *) input_files="$input_files $arg" ;; esac done options="$options -o $output_file" if [ "$verbose" = "1" ]; then echo "$path_to_lwlink $options $input_files $startup_files $libpaths $stdlibpaths $libs" fi $path_to_lwlink $options $input_files $startup_files $libpaths $libs rc=$? if [ "$rc" != "0" ]; then rm -f $output_file exit $rc fi