mirror of
https://github.com/pret/ds_disassembly_tools.git
synced 2026-03-21 18:04:11 -05:00
139 lines
3.6 KiB
Bash
139 lines
3.6 KiB
Bash
#!/usr/bin/env bash
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DEFAULT_BASEROM=baserom.nds
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DEFAULT_ARM9BUILDDIR=build/heartgold.us
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DEFAULT_ARM7BUILDDIR=sub/build
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# Build ntruncompbw on demand
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[[ ntruncompbw -nt ntruncompbw.c ]] || gcc -O3 -g -o ntruncompbw ntruncompbw.c
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getword() {
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od -j "$2" -N 4 -A n -t u "$1" | awk '{$1=$1};1'
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}
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[[ -n "$DEVKITARM" ]] && export PATH=${DEVKITARM}/bin:${PATH}
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POSITIONAL=()
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while [[ $# -gt 0 ]]; do
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key="$1"
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case $key in
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-h)
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echo "Diff segments of a Nintendo DS ROM"
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echo "Usage: $0 [-h] [-7] [-m OVERLAY] [-r BASEROM] [-d BUILDDIR] [START [END]]"
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echo ""
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echo "Arguments:"
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echo " START, END Start and end virtual addresses to diff"
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echo ""
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echo "Options:"
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echo " -7 Diff the ARM7 module (default: ARM9)"
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echo " -m OVERLAY Diff the indicated overlay module (default: static module)"
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echo " -r BASEROM Use the indicated baserom (default: baserom.nds)"
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echo " -d BUILDDIR Look for compiled binaries in this directory (default: build/heartgold.us)"
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echo " -t Force THUMB instructions (default: ARM)"
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echo " -h Show this message and exit"
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exit 0
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;;
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-7)
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proc=armv4t
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builddir=${builddir:-$DEFAULT_ARM7BUILDDIR}
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basestem=${basestem}.sub
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shift
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;;
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-m)
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[[ -n $overlay ]] && { echo can only do one overlay at a time; exit 1; }
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mode=overlay
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overlay="$2"
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basestem=${basestem}.o${overlay}
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shift
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shift
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;;
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-r)
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baserom="$2"
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shift
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shift
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;;
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-t)
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thumb=-Mforce-thumb
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shift
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;;
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-d)
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builddir="$2"
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shift
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shift
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;;
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*)
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POSITIONAL+=("$1")
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shift
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;;
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esac
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done
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set -- "${POSITIONAL[@]}"
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mode=${mode:-static}
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proc=${proc:-armv5te}
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builddir=${builddir:-$DEFAULT_ARM9BUILDDIR}
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baserom=${baserom:-$DEFAULT_BASEROM}
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basefile=${baserom}${basestem}.sbin
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[[ "$mode" == overlay ]] && {
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case $proc in
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armv4t)
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ovt=88
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;;
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armv5te)
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ovt=80
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;;
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esac
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ovtoff=$(getword "$baserom" "$ovt")
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vma=$(getword "$baserom" "$((ovtoff+32*overlay+4))")
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size=$(getword "$baserom" "$((ovtoff+32*overlay+8))")
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[[ -f $basefile ]] || {
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fileid=$(getword "$baserom" "$((ovtoff+32*overlay+24))")
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param=$(getword "$baserom" "$((ovtoff+32*overlay+28))")
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fatoff=$(getword "$baserom" 72)
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fileoff=$(getword "$baserom" "$((fatoff+8*fileid))")
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filesize=$(($(getword "$baserom" "$((fatoff+8*fileid+4))")-fileoff))
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dd if="$baserom" of="$basefile" bs=1 skip="$fileoff" count="$filesize" 2>/dev/null
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(( param & 16777216 )) && {
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compsize=$((param & 16777215))
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./ntruncompbw $basefile $vma $((vma+compsize)) || { rm -f $basefile; exit 1; }
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}
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}
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buildfile=$builddir/OVY_${overlay}.sbin
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} || {
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case $proc in
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armv4t)
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romtab=48
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compname=sub
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;;
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armv5te)
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romtab=32
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compname=main
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;;
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esac
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fileoff=$(getword "$baserom" "$romtab")
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vma=$(getword "$baserom" "$((romtab+8))")
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size=$(getword "$baserom" "$((romtab+12))")
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[[ -f $basefile ]] || {
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dd if="$baserom" of="$basefile" bs=1 skip="$fileoff" count="$size" 2>/dev/null
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[[ $proc == armv5te ]] && {
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_start_ModuleParams=$(python find_module_params.py ${basefile})
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compstatend=$(getword "$basefile" $((_start_ModuleParams+20)))
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[[ $compstatend != "0" ]] && { ./ntruncompbw $basefile $vma $compstatend || { rm -f $basefile; exit 1; }; }
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}
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}
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buildfile=${builddir}/${compname}.sbin
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}
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[[ -n "$1" ]] && start=$(($1)) || start=$vma
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[[ -n "$2" ]] && size=$(($2)) || size=$(wc -c <$basefile)
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do-objdump () {
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arm-none-eabi-objdump -Drz -bbinary -m$proc $thumb --adjust-vma=$vma --start-address=$start --stop-address=$((start+size)) $1
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}
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diff -u <(do-objdump $basefile) <(do-objdump $buildfile)
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