CodBackup/CodHavokASM
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

overhaul codebase

Browse Source
This commit is contained in:
Reece Wilson 2019-11-01 07:49:22 +00:00
parent 5d1e8ba4b3
commit fd99d06b3d
13 changed files with 445 additions and 390 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
T6Constants.js Normal file
View File

@ -0,0 +1,37 @@
function Constants(ctx, method) {
this.ctx = ctx;
this.method = method;
this.objs = [];
}
Constants.prototype.read = function() {
var size = this.ctx.reader.readMachine();
for (var i = 0; i < size; i++) {
//console.log("reading constant at " + this.ctx.reader.index);
var id = this.ctx.reader.readUByte();
var type = consts.byId[id];
if (!type) {
console.log("illegal constant type " + id);
return false;
}
var inst = new type();
inst.undump(this.ctx.reader, this.ctx);
this.objs.push(inst);
}
return true;
}
Constants.prototype.write = function() {
this.ctx.writer.writeMachine(this.objs.length);
this.objs.forEach((obj) => {
this.ctx.writer.writeUByte(obj.id);
obj.dump(this.ctx.writer, this.ctx);
});
}
module.exports = Constants;

50
T6Debug.js Normal file
View File

@ -0,0 +1,50 @@
function Debug(ctx, method) {
this.ctx = ctx;
this.method = method;
this.type = 0;
this.data = {};
}
Debug.prototype.read = function() {
this.type = this.ctx.reader.readInteger();
if (this.type == 1) {
this.data["unknown"] = this.ctx.reader.readInteger();
} else if (this.type == 0) {
} else if (this.type == 40) { //implemented in t6
//TODO:
} else if (this.type == 0x48) {
/*
hks::BytecodeWriter::dumpInt(this, 0x48);
hks::BytecodeWriter::dumpInt(v6, v5->m_debug->line_defined);
hks::BytecodeWriter::dumpInt(v6, v5->m_debug->last_line_defined);
if ( v4 )
v8 = 0i64;
else
v8 = v5->m_debug->source;
hks::BytecodeWriter::dumpString(v6, v8);
hks::BytecodeWriter::dumpString(v6, v5->m_debug->name);
hks::BytecodeWriter::dumpVector<hksInstruction>(v6, 0i64, 0i64, 0);
hks::BytecodeWriter::dumpInt(v6, 0);
hks::BytecodeWriter::dumpInt(v6, 0);
*/
}
}
Debug.prototype.write = function() {
this.ctx.writer.writeInteger(this.type);
if (this.type == 1) {
this.ctx.writer.writeInteger(this.data["unknown"]);
} else if (this.type == 0) {
return;
} else if (this.type == 40) { //implemented in t6 - but seemingly unused
//TODO:
} else if (this.type == 0x48) {
//TODO:
}
}
module.exports = Debug;

83
T6Header.js Normal file
View File

@ -0,0 +1,83 @@
function Header(ctx) {
this.magic = undefined;
this.version = 0;
//this.nonCompliant = true;
this.isLE = true;
this.intSize = 4;
this.instructionSize = 4;
this.machineSize = 4;
this.numberSize = 4;
this.platformFlags = 0;
this.numOfTypes = 13;
this.sharingMode = 0; // sharing mode (0 - none, 1 - shared, 2 - secure) ? 1 : 0
this.ctx = ctx;
}
Header.prototype.read = function() {
var buffer = this.ctx.reader.readBytes(false, 14);
this.magic = buffer.readUInt32LE();
this.version = buffer.readUInt8(4);
this.platformFlags = buffer.readUInt8(12); // extensions etc
this.intSize = buffer.readUInt8(7); // sizeOfInt
this.machineSize = buffer.readUInt8(8); // sizeOfSize
this.instructionSize = buffer.readUInt8(9); // sizeOfLuaN
this.numberSize = buffer.readUInt8(10); // sizeOfNumber
var idk = buffer.readUInt8(5); //??
this.isLE = buffer.readUInt8(6) ? true : false;
this.sharingMode = buffer.readUInt8(13) ? true : false;
this.numOfTypes = this.ctx.reader.readInteger();
if (this.numOfTypes != 13) {
console.log("There should only be 13 types");
return false;
}
for (var i in this.ctx.types.list) {
var type = this.ctx.types.list[i];
var id = this.ctx.reader.readInteger();
if (id != type.id)
{
console.log(fmt("illegal type index %i expected: %s (%i)", id, type.id, type.name));
return false;
}
var str = this.ctx.reader.readCString();
if (str != type.tname)
{
console.log(fmt("illegal type name %s expected: %s", str, type.tname));
return false;
}
}
return true;
}
Header.prototype.write = function(ctx) {
this.ctx.writer.writeUByte(0x1B);
this.ctx.writer.writeUByte(0x4C); //L
this.ctx.writer.writeUByte(0x75); //U
this.ctx.writer.writeUByte(0x61); //A
this.ctx.writer.writeUByte(this.version);
this.ctx.writer.writeUByte(13); // ???
this.ctx.writer.writeUByte(this.isLE ? 1 : 0);
this.ctx.writer.writeUByte(this.intSize);
this.ctx.writer.writeUByte(this.machineSize);
this.ctx.writer.writeUByte(this.instructionSize);
this.ctx.writer.writeUByte(this.numberSize);
this.ctx.writer.writeUByte(0); //TODO
this.ctx.writer.writeUByte(this.platformFlags);
this.ctx.writer.writeUByte(this.sharingMode ? 1 : 0);
this.ctx.writer.writeInteger(this.numOfTypes);
this.ctx.types.list.forEach((type) => {
this.ctx.writer.writeInteger(type.id);
this.ctx.writer.writeCString(type.tname);
});
}
module.exports = Header;

105
T6Method.js Normal file
View File

@ -0,0 +1,105 @@
const decoder = require("./instructions/instructionDecoder.js");
const ops = require("./instructions/instructions.js");
const fmt = require("util").format;
const Constants = require("./T6Constants.js");
const Debug = require("./T6Debug.js");
function Method(ctx) {
this.ctx = ctx;
this.debug = new Debug(ctx, this);
this.constants = new Constants(ctx, this);
this.upvals = 0;
this.params = 0;
this.flags = 0;
this.registers = 0;
this.code = [];
this.decoded = [];
this.closures = [];
}
Method.prototype.read = function() {
this.upvals = this.ctx.reader.readInteger();
this.params = this.ctx.reader.readInteger();
this.flags = this.ctx.reader.readUByte();
this.registers = this.ctx.reader.readInteger();
if (this.ctx.header.sharingMode) {
console.log("illegal sharing mode");
return;
}
this.code = this.ctx.reader.readVectorDWORD();
this.parseInstructions();
this.constants.read();
this.debug.read();
var items = this.ctx.reader.readInteger();
for (var i = 0; i < items; i++){
var methods = new Method(this.ctx);
this.closures.push(methods);
methods.read();
}
}
Method.prototype.write = function() {
this.ctx.writer.writeInteger(this.upvals);
this.ctx.writer.writeInteger(this.params);
this.ctx.writer.writeUByte(this.flags);
this.ctx.writer.writeInteger(this.registers);
if (this.ctx.header.sharingMode) {
console.log("illegal sharing mode");
return;
}
this.ctx.writer.writeVectorDWORD(this.code);
this.constants.write();
this.debug.write();
this.ctx.writer.writeInteger(this.closures.length);
this.closures.forEach((closure) => {
closure.write();
});
}
Method.prototype.parseInstructions = function() {
this.code.forEach((code) => {
var data = {};
var instruction;
var I = decoder.getOp(code);
if (!(instruction = ops.instructionById[I])) {
console.log(fmt("WTF... ILLEGAL INSTRUCTION [index: %i]", I));
return;
}
data.I = I;
data.instruction = instruction;
if (instruction.type == decoder.instructionTypes.iABC) {
var temp = decoder.decodeABC(code);
data.a = temp.a;
data.b = temp.b;
data.c = temp.c;
} else if (instruction.type == decoder.instructionTypes.iABx) {
var temp = decoder.decodeABx(code);
data.a = temp.a;
data.b = temp.b;
} else if (instruction.type == decoder.instructionTypes.iAsBx) {
var temp = decoder.decodeAsBx(code);
data.a = temp.a;
data.b = temp.b;
} else {
console.log("WTF... ILLEGAL INSTRUCTION");
}
this.decoded.push(data);
});
}
module.exports = Method;

153
asm/assembler.js
View File

@ -1,19 +1,20 @@
const consts = require("./../constants.js");
const insts = require("./../instructions.js");
const fmt = require("util").format;
const consts = require("./../constants.js");
const insts = require("./../instructions/instructions.js");
const decoder = require("./../instructions/instructionDecoder.js");
const fmt = require("util").format;
function parseLine(line) {
var ret = [];
if (line.indexOf(';') != -1)
line = line.substring(0, line.indexOf(';'));
//if (line.indexOf(';') != -1)
// line = line.substring(0, line.indexOf(';'));
var objs = line.split("\t").join(" ") // convert tabs into spaces
.split(",").join(" ") // convert ,'s into spaces
.split(",").join(" ") // convert ,'s into spaces
.split(":").join("") // get rid of optional :'s
.split("(").join("") // get rid of optional brackets
.split(")").join("") // get rid of optional brackets
.split(" "); // split
.split(" "); // split
var hack = false;
@ -38,7 +39,6 @@ function parseLine(line) {
if (obj.length == 0) return;
if (parseFloat(obj)) {
parsed.number.present = true;
parsed.number.value = parseFloat(obj);
@ -49,7 +49,8 @@ function parseLine(line) {
parsed.bool.value = obj == "true";
}
if (obj.charAt(0) == '{' && line.charAt(line.length - 1)) {
if (obj.charAt(0) == '{' && line.charAt(line.length - 1) == '}') {
var json = line.substring(line.indexOf("{"));
parsed.raw = json;
parsed.JSON.present = true;
@ -58,6 +59,12 @@ function parseLine(line) {
hack = true;
}
if (obj.charAt(0) == '"' && line.charAt(line.length - 1) == '"') {
parsed.raw = line.substring(line.indexOf('"') + 1, line.length - 1).replace('""', "");
ret.push(parsed);
hack = true;
}
if (!hack)
ret.push(parsed);
});
@ -97,6 +104,7 @@ function readBlock(buffer, context, title, callback, data) {
var start = "START_" + title;
var end = "END_" + title;
var temp;
var shouldLoop;
temp = buffer.nextKey();
if (temp != start) {
@ -104,7 +112,10 @@ function readBlock(buffer, context, title, callback, data) {
return false;
}
callback(buffer, context, data);
do
{
shouldLoop = callback(buffer, context, data);
} while (shouldLoop);
temp = buffer.nextKey();
if (temp != end) {
@ -116,100 +127,120 @@ function readBlock(buffer, context, title, callback, data) {
}
function handleHeader(buffer, context) {
if (buffer.peakKey() == "START_NUMBER_SIZES") {
readBlock(buffer, context, "NUMBER_SIZES", handleHeaderNumberics);
return handleHeader(buffer, context);
return true;
}
if (buffer.peakKey() == "VERSION") {
//TODO assert
context.header.version = buffer.next()[1].number.value;
return handleHeader(buffer, context);
return true;
}
if (buffer.peakKey() == "LENDIAN") {
//TODO assert
context.header.isLE = buffer.next()[1].bool.value;
return handleHeader(buffer, context);
return true;
}
if (buffer.peakKey() == "UNK") {
//TODO assert
// DEPRECATED
//context.header.unkByte = buffer.next()[1].number.value;
return handleHeader(buffer, context);
return true;
}
if (buffer.peakKey() == "FLAGS") {
//TODO assert
context.header.platformFlags = buffer.next()[1].number.value;
return handleHeader(buffer, context);
return true;
}
if (buffer.peakKey() == "TYPES") {
//TODO assert
context.header.numOfTypes = buffer.next()[1].number.value;
return handleHeader(buffer, context);
return true;
}
if (buffer.peakKey() == "SHARE") {
//TODO assert
context.header.share = buffer.next()[1].bool.value;
return handleHeader(buffer, context);
return true;
}
return undefined;
}
function handleHeaderNumberics(buffer, context) {
if (buffer.peakKey() == "NUMBER") {
//TODO assert
context.header.numberSize = buffer.next()[1].number.value;
return handleHeaderNumberics(buffer, context);
return true;
}
if (buffer.peakKey() == "INTEGER") {
//TODO assert
context.header.intSize = buffer.next()[1].number.value;
return handleHeaderNumberics(buffer, context);
return true;
}
if (buffer.peakKey() == "INSTRUCTION") {
//TODO assert
context.header.instructionSize = buffer.next()[1].number.value;
return handleHeaderNumberics(buffer, context);
return true;
}
if (buffer.peakKey() == "SIZE_T") {
//TODO assert
context.header.machineSize = buffer.next()[1].number.value;
return handleHeaderNumberics(buffer, context);
return true;
}
return false;
}
function handleMethodDebug(buffer, context, dbg ) {
if (buffer.peakKey() == "TYPE") {
//TODO assert
dbg.type = buffer.next()[1].number.value;
return handleMethodDebug(buffer, context, dbg);
return true;
}
if (buffer.peakKey() == "DATA") {
//TODO assert
dbg.data = buffer.next()[1].JSON.value;
return handleMethodDebug(buffer, context, dbg);
return true;
}
return true;
return false;
}
function handleMethodConstants(buffer, context, constants) {
if (buffer.peakKey() == "END_CONSTANTS") return true;
if (buffer.peakKey() == "END_CONSTANTS")
return false;
for (let Type of consts.list) {
if (Type.tname == buffer.peakKey()) {
var type = new Type();
var ahh = buffer.next();
if (ahh[1])
type.fromString(ahh[1].raw);
else if (Type.tname == "TSTRING")
type.value = "";
constants.objs.push(type);
return handleMethodConstants(buffer, context, constants);
}
if (Type.tname != buffer.peakKey())
continue;
var type = new Type();
var readValue = buffer.next();
if (readValue[1])
type.fromString(readValue[1].raw);
else if (Type.tname == "TSTRING")
type.value = "";
constants.objs.push(type);
return true;
}
return false;
}
@ -217,91 +248,93 @@ function handleMethodCode(buffer, context, opcodes) {
while (buffer.peakKey() != "END_CODE") {
var nxt = buffer.next();
if (Object.keys(insts.instructionTypes).indexOf(nxt[0].raw) != -1)
if (Object.keys(decoder.instructionTypes).indexOf(nxt[0].raw) != -1)
nxt.shift();
var instruction = insts.instructionByName[nxt[0].raw];
nxt.shift();
if (instruction.type == insts.instructionTypes.iABC) {
opcodes.push(insts.encodeABC(instruction.opcode, nxt[0].number.value, nxt[1].number.value, nxt[2].number.value));
} else if (instruction.type == insts.instructionTypes.iABx) {
opcodes.push(insts.encodeABx(instruction.opcode, nxt[0].number.value, nxt[1].number.value));
} else if (instruction.type == insts.instructionTypes.iAsBx) {
opcodes.push(insts.encodeAsBx(instruction.opcode, nxt[0].number.value, nxt[1].number.value));
if (instruction.type == decoder.instructionTypes.iABC) {
opcodes.push(decoder.encodeABC(instruction.opcode, nxt[0].number.value, nxt[1].number.value, nxt[2].number.value));
} else if (instruction.type == decoder.instructionTypes.iABx) {
opcodes.push(decoder.encodeABx(instruction.opcode, nxt[0].number.value, nxt[1].number.value));
} else if (instruction.type == decoder.instructionTypes.iAsBx) {
opcodes.push(decoder.encodeAsBx(instruction.opcode, nxt[0].number.value, nxt[1].number.value));
}
}
return false;
}
function handleClosure(buffer, context, data) {
var id = data.id;
var newMethod = new (require("./../index.js").Method)(context);
var newMethod = new context.MethodType(context);
readBlock(buffer, context, "METHOD", handleMethod, newMethod);
data.parent.closures.push(newMethod);
return false;
}
function handleMethod(buffer, context, method) {
if (buffer.peakKey() == "START_DBG") {
if (!readBlock(buffer, context, "DBG", handleMethodDebug, method.debug))
return false;
return handleMethod(buffer, context, method);
return readBlock(buffer, context, "DBG", handleMethodDebug, method.debug);
}
if (buffer.peakKey() == "START_CONSTANTS") {
if (!readBlock(buffer, context, "CONSTANTS", handleMethodConstants, method.constants))
return false;
return handleMethod(buffer, context, method);
return readBlock(buffer, context, "CONSTANTS", handleMethodConstants, method.constants);
}
if (buffer.peakKey() == "START_CODE") {
if (!readBlock(buffer, context, "CODE", handleMethodCode, method.code))
return false;
method.parseInstructions();
return handleMethod(buffer, context, method);
return true;
}
if (buffer.peakKey() == "START_CLOSURE") {
if (!readBlock(buffer, context, "CLOSURE", handleClosure, {parent: method, id: buffer.peak()[1].number.value}))
return false;
return handleMethod(buffer, context, method);
return readBlock(buffer, context, "CLOSURE", handleClosure, {parent: method, id: buffer.peak()[1].number.value});
}
if (buffer.peakKey() == "FLAGS") {
//TODO assert
method.flags = buffer.next()[1].number.value;
return handleMethod(buffer, context, method);
return true;
}
if (buffer.peakKey() == "PARAMS") {
//TODO assert
method.params = buffer.next()[1].number.value;
return handleMethod(buffer, context, method);
return true;
}
if (buffer.peakKey() == "UPVALS") {
//TODO assert
method.upvals = buffer.next()[1].number.value;
return handleMethod(buffer, context, method);
return true;
}
if (buffer.peakKey() == "REGCNT") {
//TODO assert
method.registers = buffer.next()[1].number.value;
return handleMethod(buffer, context, method);
return true;
}
return true;
return false;
}
function handleScript(buffer, context) {
if (buffer.peakKey() == "START_HEADER") {
readBlock(buffer, context, "HEADER", handleHeader);
return handleScript(buffer, context);
return true;
}
if (buffer.peakKey() == "START_METHOD") {
readBlock(buffer, context, "METHOD", handleMethod, context.mainMethod);
return handleScript(buffer, context);
return true;
}
return false;
}
function asmContext(string, context) {

2
asm/disassembler.js
View File

@ -1,5 +1,5 @@
const consts = require("./../constants.js");
const insts = require("./../instructions.js");
const insts = require("./../instructions/instructions.js");
const fmt = require("util").format;
function append(_, level, str) {

70
streamReader.js → bin/streamReader.js
View File

@ -1,5 +1,3 @@
const iset = require("./instructions.js");
function Reader(buffer, ctx) {
this.buffer = buffer;
this.index = 0;
@ -64,45 +62,50 @@ Reader.prototype.readNumber = function(peak) {
}
Reader.prototype.readMachine = function(peak) {
if (this.ctx.header.machineSize == 4) {
var i = this.ctx.header.isLE ? this.buffer.readUInt32LE(this.index) : this.buffer.readUInt32BE(this.index);
if (peak)
return i;
this.index += 4;
return i;
}
//TODO:
console.log("int64 not supported");
return -203;
if (this.ctx.header.machineSize == 4) {
return this.consumeInt32(peak);
} else if (this.ctx.header.machineSize == 8) {
return this.consumeInt64(peak);
} else {
return -420;
}
}
Reader.prototype.readInstruction = function(peak) {
if (this.ctx.header.instructionSize == 4) {
var i = this.ctx.header.isLE ? this.buffer.readUInt32LE(this.index) : this.buffer.readUInt32BE(this.index);
if (peak)
return i;
this.index += 4;
return i;
}
//TODO:
console.log("int64 not supported");
return -203;
if (this.ctx.header.instructionSize == 4) {
return this.consumeInt32(peak);
} else if (this.ctx.header.instructionSize == 8) {
return this.consumeInt64(peak);
} else {
return -420;
}
}
Reader.prototype.readInteger = function(peak) {
if (this.ctx.header.intSize == 4) {
var i = this.ctx.header.isLE ? this.buffer.readInt32LE(this.index) : this.buffer.readInt32BE(this.index);
if (peak)
return i;
this.index += 4;
return i;
}
return this.consumeInt32(peak);
} else if (this.ctx.header.intSize == 8) {
return this.consumeInt64(peak);
} else {
return -420;
}
}
//TODO:
console.log("int64 not supported");
return -203;
Reader.prototype.consumeInt64 = function(peak) {
var lo = this.buffer.readInt32LE(this.index);
this.index += 4;
var hi = this.buffer.readInt32LE(this.index);
this.index += 4;
if (peak)
this.index -= 8;
return BigInt(hi) << 32n | lo;
}
Reader.prototype.consumeInt32 = function(peak) {
var lo = this.ctx.header.isLE ? this.buffer.readUInt32LE(this.index) : this.buffer.readUInt32BE(this.index);
if (!peak)
this.index += 4;
return lo;
}
Reader.prototype.readVectorDWORD = function(peak) {
@ -114,5 +117,4 @@ Reader.prototype.readVectorDWORD = function(peak) {
return buffer;
}
module.exports = Reader;

0
streamWriter.js → bin/streamWriter.js
View File

281
index.js
View File

@ -1,276 +1,23 @@
const StreamReader = require("./streamReader.js");
const StreamWriter = require("./streamWriter.js");
const StreamReader = require("./bin/streamReader.js");
const StreamWriter = require("./bin/streamWriter.js");
const fio = require("fs");
const consts = require("./constants.js");
const insts = require("./instructions.js");
const fmt = require("util").format;
const process = require("process");
const dasm = require("./asm/disassembler.js");
const asm = require("./asm/assembler.js");
function Header(ctx) {
this.magic = undefined;
this.version = 0;
//this.nonCompliant = true;
this.isLE = true;
this.intSize = 4;
this.instructionSize = 4;
this.machineSize = 4;
this.numberSize = 4;
this.platformFlags = 0;
this.numOfTypes = 13;
this.sharingMode = 0; // sharing mode (0 - none, 1 - shared, 2 - secure) ? 1 : 0
this.ctx = ctx;
}
const instructions = require("./instructions/instructions.js");
Header.prototype.read = function() {
var buffer = this.ctx.reader.readBytes(false, 14);
this.magic = buffer.readUInt32LE();
this.version = buffer.readUInt8(4);
this.platformFlags = buffer.readUInt8(12); // extensions etc
this.intSize = buffer.readUInt8(7); // sizeOfInt
this.machineSize = buffer.readUInt8(8); // sizeOfSize
this.instructionSize = buffer.readUInt8(9); // sizeOfLuaN
this.numberSize = buffer.readUInt8(10); // sizeOfNumber
var idk = buffer.readUInt8(5); //??
this.isLE = buffer.readUInt8(6) ? true : false;
this.sharingMode = buffer.readUInt8(13) ? true : false;
this.numOfTypes = this.ctx.reader.readInteger();
if (this.numOfTypes != 13) {
console.log("There should only be 13 types");
return false;
}
for (var i in consts.list) {
var type = consts.list[i];
var id = this.ctx.reader.readInteger();
if (id != type.id)
{
console.log(fmt("illegal type index %i expected: %s (%i)", id, type.id, type.name));
return false;
}
var str = this.ctx.reader.readCString();
if (str != type.tname)
{
console.log(fmt("illegal type name %s expected: %s", str, type.tname));
return false;
}
}
return true;
}
Header.prototype.write = function(ctx) {
this.ctx.writer.writeUByte(0x1B);
this.ctx.writer.writeUByte(0x4C); //L
this.ctx.writer.writeUByte(0x75); //U
this.ctx.writer.writeUByte(0x61); //A
this.ctx.writer.writeUByte(this.version);
this.ctx.writer.writeUByte(13); // ???
this.ctx.writer.writeUByte(this.isLE ? 1 : 0);
this.ctx.writer.writeUByte(this.intSize);
this.ctx.writer.writeUByte(this.machineSize);
this.ctx.writer.writeUByte(this.instructionSize);
this.ctx.writer.writeUByte(this.numberSize);
this.ctx.writer.writeUByte(0); //TODO
this.ctx.writer.writeUByte(this.platformFlags);
this.ctx.writer.writeUByte(this.sharingMode ? 1 : 0);
this.ctx.writer.writeInteger(this.numOfTypes);
consts.list.forEach((type) => {
this.ctx.writer.writeInteger(type.id);
this.ctx.writer.writeCString(type.tname);
});
}
function Debug(ctx, method) {
this.ctx = ctx;
this.method = method;
this.type = 0;
this.data = {};
}
Debug.prototype.read = function() {
this.type = this.ctx.reader.readInteger();
if (this.type == 1) {
this.data["unknown"] = this.ctx.reader.readInteger();
} else if (this.type == 0) {
} else if (this.type == 40) { //implemented in t6
//TODO:
} else if (this.type == 0x48) {
/*
hks::BytecodeWriter::dumpInt(this, 0x48);
hks::BytecodeWriter::dumpInt(v6, v5->m_debug->line_defined);
hks::BytecodeWriter::dumpInt(v6, v5->m_debug->last_line_defined);
if ( v4 )
v8 = 0i64;
else
v8 = v5->m_debug->source;
hks::BytecodeWriter::dumpString(v6, v8);
hks::BytecodeWriter::dumpString(v6, v5->m_debug->name);
hks::BytecodeWriter::dumpVector<hksInstruction>(v6, 0i64, 0i64, 0);
hks::BytecodeWriter::dumpInt(v6, 0);
hks::BytecodeWriter::dumpInt(v6, 0);
*/
}
}
Debug.prototype.write = function() {
this.ctx.writer.writeInteger(this.type);
if (this.type == 1) {
this.ctx.writer.writeInteger(this.data["unknown"]);
} else if (this.type == 0) {
return;
} else if (this.type == 40) { //implemented in t6 - but seemingly unused
//TODO:
} else if (this.type == 0x48) {
//TODO:
}
}
function Constants(ctx, method) {
this.ctx = ctx;
this.method = method;
this.objs = [];
}
Constants.prototype.read = function() {
var size = this.ctx.reader.readMachine();
for (var i = 0; i < size; i++) {
//console.log("reading constant at " + this.ctx.reader.index);
var id = this.ctx.reader.readUByte();
var type = consts.byId[id];
if (!type) {
console.log("illegal constant type " + id);
return false;
}
var inst = new type();
inst.undump(this.ctx.reader, this.ctx);
this.objs.push(inst);
}
return true;
}
Constants.prototype.write = function() {
this.ctx.writer.writeMachine(this.objs.length);
this.objs.forEach((obj) => {
this.ctx.writer.writeUByte(obj.id);
obj.dump(this.ctx.writer, this.ctx);
});
}
function Method(ctx) {
this.ctx = ctx;
this.debug = new Debug(ctx, this);
this.constants = new Constants(ctx, this);
this.upvals = 0;
this.params = 0;
this.flags = 0;
this.registers = 0;
this.code = [];
this.decoded = [];
this.closures = [];
}
Method.prototype.read = function() {
this.upvals = this.ctx.reader.readInteger();
this.params = this.ctx.reader.readInteger();
this.flags = this.ctx.reader.readUByte();
this.registers = this.ctx.reader.readInteger();
if (this.ctx.header.sharingMode) {
console.log("illegal sharing mode");
return;
}
this.code = this.ctx.reader.readVectorDWORD();
this.parseInstructions();
this.constants.read();
this.debug.read();
var items = this.ctx.reader.readInteger();
for (var i = 0; i < items; i++){
var methods = new Method(this.ctx);
this.closures.push(methods);
methods.read();
}
}
Method.prototype.write = function() {
this.ctx.writer.writeInteger(this.upvals);
this.ctx.writer.writeInteger(this.params);
this.ctx.writer.writeUByte(this.flags);
this.ctx.writer.writeInteger(this.registers);
if (this.ctx.header.sharingMode) {
console.log("illegal sharing mode");
return;
}
this.ctx.writer.writeVectorDWORD(this.code);
this.constants.write();
this.debug.write();
this.ctx.writer.writeInteger(this.closures.length);
this.closures.forEach((closure) => {
closure.write();
});
}
Method.prototype.parseInstructions = function() {
this.code.forEach((code) => {
var data = {};
var I = insts.getOp(code);
var instruction = insts.instructionById[I];
if (!instruction) {
console.log(fmt("WTF... ILLEGAL INSTRUCTION [index: %i]", I));
return;
}
data.I = I;
data.instruction = instruction;
if (instruction.type == insts.instructionTypes.iABC) {
var temp = insts.decodeABC(code);
data.a = temp.a;
data.b = temp.b;
data.c = temp.c;
} else if (instruction.type == insts.instructionTypes.iABx) {
var temp = insts.decodeABx(code);
data.a = temp.a;
data.b = temp.b;
} else if (instruction.type == insts.instructionTypes.iAsBx) {
var temp = insts.decodeAsBx(code);
data.a = temp.a;
data.b = temp.b;
} else {
console.log("WTF... ILLEGAL INSTRUCTION");
}
this.decoded.push(data);
});
}
const T6Header = require("./T6Header.js");
const T6Method = require("./T6Method.js");
function Context() {
this.types = consts;
this.header = new Header(this);
this.mainMethod = new Method(this);
this.header = new T6Header(this);
this.mainMethod = new T6Method(this);
this.HeaderType = T6Header;
this.MethodType = T6Method;
this.reader = undefined;
this.writer = undefined;
}
@ -315,11 +62,7 @@ Context.prototype.assembleFile = function(file) {
}
module.exports = {
Context: Context,
Method: Method,
Constants: Constants,
Debug: Debug,
Header: Header,
constants: consts,
instructions: insts
T6Context: Context,
types: consts,
instructions: instructions
}

32
instructions.js → instructions/instructionDecoder.js
View File

@ -1,5 +1,3 @@
const opcodes = require("./instructions_a.js");
const e_iABC = 0;
const e_iABx = 1;
const e_iAsBx = 2;
@ -8,17 +6,6 @@ const itypes = { "iABC": e_iABC,
"iABx": e_iABx,
"iAsBx": e_iAsBx };
var instructionById = {};
var instructionByName = {};
opcodes.forEach((obj) => {
instructionById[obj.opcode] = obj;
});
opcodes.forEach((obj) => {
instructionByName[obj.name] = obj;
});
function getOp(code) {
return (code >>> 25) & 0x7f;
}
@ -66,15 +53,12 @@ function decodeAsBx(code) {
}
module.exports = {
getOp: getOp,
encodeABC: encodeABC,
decodeABC: decodeABC,
encodeABx: encodeABx,
decodeABx: decodeABx,
encodeAsBx: encodeAsBx,
decodeAsBx: decodeAsBx,
instructions: opcodes,
instructionById: instructionById,
instructionByName: instructionByName,
instructionTypes: itypes
getOp: getOp,
encodeABC: encodeABC,
decodeABC: decodeABC,
encodeABx: encodeABx,
decodeABx: decodeABx,
encodeAsBx: encodeAsBx,
decodeAsBx: decodeAsBx,
instructionTypes: itypes
};

18
instructions/instructions.js Normal file
View File

@ -0,0 +1,18 @@
const opcodes = require("./instructionsT6.js");
var instructionById = {};
var instructionByName = {};
opcodes.forEach((obj) => {
instructionById[obj.opcode] = obj;
});
opcodes.forEach((obj) => {
instructionByName[obj.name] = obj;
});
module.exports = {
instructions: opcodes,
instructionById: instructionById,
instructionByName: instructionByName
};

0
instructions_a.js → instructions/instructionsT6.js
View File

0
instructions_b.js
View File