Add map-format reversing + in-browser table editor
Reverse-engineered the Triumph Keihin map format from the TuneECU loader (l.java zc/sc/Nc) and data classes c/r/s/t.java, and turned the viewer's table tab into a working editor. extract_mapdefs.py pulls the table directory out of the decompiled app into mapdefs.json: r.a/s.a/t.a (calibration directory, 8-int records keyed by the map's offset-20 signature) -> c.a (48-int calibration metadata) -> c.b (32-int groups = 16 offset/length pairs each), yielding 413 candidate table offsets. FORMAT.md documents the header magic (0x18008060 masked), the directory chain, and the write-back checksum. The viewer now edits: pick a known table offset (or set it manually), toggle edit mode, click a cell to change its value, and the bytes are rewritten with the running 16-bit checksum patched by (old - new) exactly as TuneECU does, then Download the modified copy. Verified: editing 2016->9999 with the checksum word at 0 yields 57553 = (0 + 2016 - 9999) & 0xffff. Geometry offsets are read-confident but not yet validated against a real map binary; FORMAT.md flags this. Editing/checksum stay local to a downloaded copy; the flash write path remains out of the read-only tunie tool.
This commit is contained in:
@@ -107,6 +107,9 @@
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</div>
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<div id="tvBody" style="display:none">
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<div class="tv-controls">
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<label>Known table
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<select id="known"><option value="">— pick / manual —</option></select>
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</label>
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<label>Offset (hex)<input type="text" id="off" value="0"></label>
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<label>Columns<input type="number" id="cols" value="16" min="1"></label>
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<label>Rows<input type="number" id="rows" value="16" min="1"></label>
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@@ -117,14 +120,22 @@
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<select id="endian"><option value="be" selected>big</option><option value="le">little</option></select>
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</label>
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<label>Scale ×<input type="text" id="scale" value="1"></label>
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<label>Checksum off (hex)<input type="text" id="chkoff" value="" placeholder="e.g. d8048"></label>
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</div>
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<div class="controls">
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<span class="chip" id="editChip">✎ Edit mode</span>
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<button id="download" class="chip" style="border-color:var(--ok);color:var(--ok)">⭳ Download edited copy</button>
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<span class="count" id="dirty"></span>
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</div>
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<div id="tvInfo" class="hint"></div>
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<div id="heat" class="heat"></div>
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<div id="hex" class="hexdump"></div>
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</div>
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<p class="hint">No dump yet? This becomes useful after <span class="mono">tunie</span> reads a ROM.
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Meanwhile you can drop any TuneECU <span class="mono">.hex</span> map to eyeball its bytes,
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and hand-locate tables by diffing two maps.</p>
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<p class="hint"><b>Editing:</b> turn on ✎ Edit mode, click a cell, type a new value, Enter. The bytes
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are written in place and — if a checksum offset is set — the running 16-bit checksum word is patched
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by <span class="mono">(old − new)</span>, exactly as TuneECU does. Then Download the modified copy.
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“Known table” lists the <span id="tgN">0</span> candidate offsets extracted from TuneECU; verify them
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against a real ROM before trusting them.</p>
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</section>
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</main>
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@@ -211,6 +222,7 @@ fileIn.onchange=e=>load(e.target.files[0]);
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function load(f){
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if(!f) return;
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FNAME=f.name;
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const r=new FileReader();
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r.onload=()=>{
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let buf=new Uint8Array(r.result);
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@@ -236,7 +248,58 @@ function parseIntelHex(txt){
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for(let i=0;i<max;i++) b[i]=out[i]||0;
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return b;
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}
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['off','cols','rows','cell','endian','scale'].forEach(id=>document.getElementById(id).oninput=draw);
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// ---- known-table picklist from extracted geometry ----
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let EDIT=false, DIRTY=0, FNAME='map.bin';
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const known=document.getElementById('known');
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const allTables=[];
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(DATA.geometry||[]).forEach(g=>g.tables.forEach(t=>allTables.push({...t,group:g.group})));
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document.getElementById('tgN').textContent=allTables.length;
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// de-dup by offset for a saner list
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const seen=new Set();
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allTables.filter(t=>!seen.has(t.offset)&&seen.add(t.offset))
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.sort((a,b)=>a.offset-b.offset).forEach(t=>{
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const o=document.createElement('option');
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o.value=t.offset; o.textContent=`${t.offset_hex} · ${t.length} bytes (grp ${t.group})`;
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known.appendChild(o);
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});
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known.onchange=()=>{
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if(!known.value) return;
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const t=allTables.find(x=>x.offset==known.value);
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document.getElementById('off').value=(+known.value).toString(16);
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// guess a square-ish 16-bit layout from the byte length
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const cells=Math.floor(t.length/2), c=Math.min(16,cells)||1;
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document.getElementById('cols').value=c;
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document.getElementById('rows').value=Math.max(1,Math.floor(cells/c));
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draw();
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};
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document.getElementById('editChip').onclick=e=>{EDIT=!EDIT;e.target.classList.toggle('on',EDIT);draw();};
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document.getElementById('download').onclick=()=>{
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if(!BYTES) return;
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const blob=new Blob([BYTES],{type:'application/octet-stream'});
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const a=document.createElement('a');
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a.href=URL.createObjectURL(blob); a.download=FNAME.replace(/(\.\w+)?$/,'.edited$1');
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a.click(); URL.revokeObjectURL(a.href);
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};
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['off','cols','rows','cell','endian','scale','chkoff'].forEach(id=>document.getElementById(id).oninput=draw);
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function readCell(p,cw,be){ return cw===1 ? BYTES[p] : (be?(BYTES[p]<<8)|BYTES[p+1]:(BYTES[p+1]<<8)|BYTES[p]); }
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function writeCell(p,cw,be,v){
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v=Math.max(0,Math.round(v)) & (cw===1?0xff:0xffff);
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const old=readCell(p,cw,be);
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if(cw===1){ BYTES[p]=v; }
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else if(be){ BYTES[p]=v>>8; BYTES[p+1]=v&0xff; } else { BYTES[p+1]=v>>8; BYTES[p]=v&0xff; }
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// patch the running 16-bit checksum word, TuneECU-style: chk += (old - new)
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const co=parseInt(document.getElementById('chkoff').value,16);
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if(!isNaN(co) && cw===2 && co!==p){
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let chk=(BYTES[co]<<8)|BYTES[co+1];
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chk=(chk + old - v) & 0xffff;
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BYTES[co]=chk>>8; BYTES[co+1]=chk&0xff;
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}
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DIRTY++; document.getElementById('dirty').textContent=DIRTY+' edit'+(DIRTY===1?'':'s');
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}
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function draw(){
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if(!BYTES) return;
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const off=parseInt(document.getElementById('off').value,16)||0;
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@@ -244,29 +307,33 @@ function draw(){
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const cw=+document.getElementById('cell').value, be=document.getElementById('endian').value==='be';
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const scale=parseFloat(document.getElementById('scale').value)||1;
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const vals=[]; let p=off;
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for(let i=0;i<cols*rows;i++){
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let v;
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if(cw===1){ v=BYTES[p]; p+=1; }
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else { v = be ? (BYTES[p]<<8)|BYTES[p+1] : (BYTES[p+1]<<8)|BYTES[p]; p+=2; }
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vals.push(v*scale);
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}
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for(let i=0;i<cols*rows;i++){ vals.push(readCell(p,cw,be)*scale); p+=cw; }
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const mn=Math.min(...vals), mx=Math.max(...vals), span=mx-mn||1;
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const heat=document.getElementById('heat');
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heat.style.gridTemplateColumns=`repeat(${cols},1fr)`;
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heat.innerHTML='';
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vals.forEach(v=>{
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const t=(v-mn)/span; // blue(low) -> red(high)
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const hue=(1-t)*220;
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vals.forEach((v,i)=>{
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const t=(v-mn)/span, hue=(1-t)*220;
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const cell=document.createElement('div'); cell.className='cell';
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cell.style.background=`hsl(${hue},75%,${35+t*25}%)`;
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cell.textContent = Number.isInteger(v)?v:v.toFixed(1);
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if(EDIT){
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cell.style.cursor='cell'; cell.style.outline='1px solid rgba(255,255,255,.15)';
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cell.onclick=()=>{
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const raw=prompt(`New value (scaled ×${scale}) for cell r${Math.floor(i/cols)} c${i%cols}:`, v);
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if(raw===null) return;
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const nv=parseFloat(raw); if(isNaN(nv)) return;
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writeCell(off+i*cw, cw, be, nv/scale);
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draw();
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};
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}
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heat.appendChild(cell);
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});
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document.getElementById('tvInfo').textContent=
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`range ${mn.toLocaleString()} … ${mx.toLocaleString()} over ${cols}×${rows} cells from 0x${off.toString(16)}`;
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// hex dump around the offset
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`range ${mn.toLocaleString()} … ${mx.toLocaleString()} over ${cols}×${rows} cells from 0x${off.toString(16)}`+
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(EDIT?' · edit mode ON — click a cell':'');
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let dump=''; const start=off & ~0xf;
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for(let a=start;a<start+ (rows*cols*cw)+16 && a<BYTES.length; a+=16){
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for(let a=start;a<start+(rows*cols*cw)+16 && a<BYTES.length; a+=16){
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let hex='',asc='';
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for(let i=0;i<16;i++){ const b=BYTES[a+i]; if(b===undefined)break;
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hex+=b.toString(16).padStart(2,'0')+' '; asc+=(b>=32&&b<127)?String.fromCharCode(b):'.'; }
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