iw7-mod/deps/asmjit/tools/tablegen-a64.js

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2024-08-13 05:15:34 -04:00
// This file is part of AsmJit project <https://asmjit.com>
//
// See asmjit.h or LICENSE.md for license and copyright information
// SPDX-License-Identifier: Zlib
"use strict";
const core = require("./tablegen.js");
const commons = require("./generator-commons.js");
const hasOwn = Object.prototype.hasOwnProperty;
const asmdb = core.asmdb;
const kIndent = commons.kIndent;
const IndexedArray = commons.IndexedArray;
const StringUtils = commons.StringUtils;
const FATAL = commons.FATAL;
// ============================================================================
// [ArmDB]
// ============================================================================
// Create AArch64 ISA.
const isa = new asmdb.aarch64.ISA();
/*
class GenUtils {
// Get a list of instructions based on `name` and optional `mode`.
static query(name, mode) {
const insts = isa.query(name);
return !mode ? insts : insts.filter(function(inst) { return inst.arch === mode; });
}
static archOf(records) {
var t16Arch = false;
var t32Arch = false;
var a32Arch = false;
var a64Arch = false;
for (var i = 0; i < records.length; i++) {
const record = records[i];
if (record.encoding === "T16") t16Arch = true;
if (record.encoding === "T32") t32Arch = true;
if (record.encoding === "A32") a32Arch = true;
if (record.encoding === "A64") a64Arch = true;
}
var s = (t16Arch && !t32Arch) ? "T16" :
(t32Arch && !t16Arch) ? "T32" :
(t16Arch && t32Arch) ? "Txx" : "---";
s += " ";
s += (a32Arch) ? "A32" : "---";
s += " ";
s += (a64Arch) ? "A64" : "---";
return `[${s}]`;
}
static featuresOf(records) {
const exts = Object.create(null);
for (var i = 0; i < records.length; i++) {
const record = records[i];
for (var k in record.extensions)
exts[k] = true;
}
const arr = Object.keys(exts);
arr.sort();
return arr;
}
}
*/
// ============================================================================
// [tablegen.arm.ArmTableGen]
// ============================================================================
class ArmTableGen extends core.TableGen {
constructor() {
super("A64");
}
// --------------------------------------------------------------------------
// [Parse / Merge]
// --------------------------------------------------------------------------
parse() {
const rawData = this.dataOfFile("src/asmjit/arm/a64instdb.cpp");
const stringData = StringUtils.extract(rawData, "// ${InstInfo:Begin}", "// ${InstInfo:End");
const re = new RegExp(
"INST\\(\\s*" +
// [01] Instruction.
"(" +
"[A-Za-z0-9_]+" +
")\\s*,\\s*" +
// [02] Encoding.
"(" +
"[^,]+" +
")\\s*,\\s*" +
// [03] OpcodeData.
"(" +
"\\([^\\)]+\\)" +
")\\s*,\\s*" +
// [04] RWInfo.
"(" +
"[^,]+" +
")\\s*,\\s*" +
// [05] InstructionFlags.
"(\\s*" +
"(?:" +
"(?:" +
"[\\d]+" +
"|" +
"F\\([^\\)]*\\)" +
")" +
"\\s*" +
"[|]?\\s*" +
")+" +
")\\s*,\\s*" +
// --- autogenerated fields ---
// [06] OpcodeDataIndex.
"([^\\)]+)" +
"\\s*\\)"
, "g");
var m;
while ((m = re.exec(stringData)) !== null) {
var enum_ = m[1];
var name = enum_ === "None" ? "" : enum_.toLowerCase();
var encoding = m[2].trim();
var opcodeData = m[3].trim();
var rwInfo = m[4].trim();
var instFlags = m[5].trim();
var displayName = name;
if (name.endsWith("_v"))
displayName = name.substring(0, name.length - 2);
// We have just matched #define INST()
if (name == "id" &&
encoding === "encoding" &&
encodingDataIndex === "encodingDataIndex")
continue;
this.addInst({
id : 0, // Instruction id (numeric value).
name : name, // Instruction name.
displayName : displayName, // Instruction name to display.
enum : enum_, // Instruction enum without `kId` prefix.
encoding : encoding, // Opcode encoding.
opcodeData : opcodeData, // Opcode data.
opcodeDataIndex : -1, // Opcode data index.
rwInfo : rwInfo, // RW info.
flags : instFlags // Instruction flags.
});
}
if (this.insts.length === 0 || this.insts.length !== StringUtils.countOf(stringData, "INST("))
FATAL("ARMTableGen.parse(): Invalid parsing regexp (no data parsed)");
console.log("Number of Instructions: " + this.insts.length);
}
merge() {
var s = StringUtils.format(this.insts, "", true, function(inst) {
return "INST(" +
String(inst.enum ).padEnd(17) + ", " +
String(inst.encoding ).padEnd(19) + ", " +
String(inst.opcodeData ).padEnd(86) + ", " +
String(inst.rwInfo ).padEnd(10) + ", " +
String(inst.flags ).padEnd(26) + ", " +
String(inst.opcodeDataIndex ).padEnd( 3) + ")" ;
}) + "\n";
return this.inject("InstInfo", s, this.insts.length * 4);
}
// --------------------------------------------------------------------------
// [Hooks]
// --------------------------------------------------------------------------
onBeforeRun() {
this.load([
"src/asmjit/arm/a64emitter.h",
"src/asmjit/arm/a64globals.h",
"src/asmjit/arm/a64instdb.cpp",
"src/asmjit/arm/a64instdb.h",
"src/asmjit/arm/a64instdb_p.h"
]);
this.parse();
}
onAfterRun() {
this.merge();
this.save();
this.dumpTableSizes();
}
}
// ============================================================================
// [tablegen.arm.IdEnum]
// ============================================================================
class IdEnum extends core.IdEnum {
constructor() {
super("IdEnum");
}
comment(inst) {
let name = inst.name;
let ext = [];
if (name.endsWith("_v")) {
name = name.substr(0, name.length - 2);
ext.push("ASIMD");
}
let exts = "";
if (ext.length)
exts = " {" + ext.join("&") + "}";
return `Instruction '${name}'${exts}.`;
}
}
// ============================================================================
// [tablegen.arm.NameTable]
// ============================================================================
class NameTable extends core.NameTable {
constructor() {
super("NameTable");
}
}
// ============================================================================
// [tablegen.arm.EncodingTable]
// ============================================================================
class EncodingTable extends core.Task {
constructor() {
super("EncodingTable");
}
run() {
const insts = this.ctx.insts;
const map = {};
for (var i = 0; i < insts.length; i++) {
const inst = insts[i];
const encoding = inst.encoding;
const opcodeData = inst.opcodeData.replace(/\(/g, "{ ").replace(/\)/g, " }");
if (!hasOwn.call(map, encoding))
map[encoding] = [];
if (inst.opcodeData === "(_)") {
inst.opcodeDataIndex = 0;
continue;
}
const opcodeTable = map[encoding];
const opcodeDataIndex = opcodeTable.length;
opcodeTable.push({ name: inst.name, data: opcodeData });
inst.opcodeDataIndex = opcodeDataIndex;
}
const keys = Object.keys(map);
keys.sort();
var tableSource = "";
var tableHeader = "";
var encodingIds = "";
encodingIds += "enum EncodingId : uint32_t {\n"
encodingIds += " kEncodingNone = 0";
keys.forEach((dataClass) => {
const dataName = dataClass[0].toLowerCase() + dataClass.substr(1);
const opcodeTable = map[dataClass];
const count = opcodeTable.length;
if (dataClass !== "None") {
encodingIds += ",\n"
encodingIds += " kEncoding" + dataClass;
}
if (count) {
tableHeader += `extern const ${dataClass} ${dataName}[${count}];\n`;
if (tableSource)
tableSource += "\n";
tableSource += `const ${dataClass} ${dataName}[${count}] = {\n`;
for (var i = 0; i < count; i++) {
tableSource += ` ${opcodeTable[i].data}` + (i == count - 1 ? " " : ",") + " // " + opcodeTable[i].name + "\n";
}
tableSource += `};\n`;
}
});
encodingIds += "\n};\n";
return this.ctx.inject("EncodingId" , StringUtils.disclaimer(encodingIds), 0) +
this.ctx.inject("EncodingDataForward", StringUtils.disclaimer(tableHeader), 0) +
this.ctx.inject("EncodingData" , StringUtils.disclaimer(tableSource), 0);
}
}
// ============================================================================
// [tablegen.arm.CommonTable]
// ============================================================================
class CommonTable extends core.Task {
constructor() {
super("CommonTable", [
"IdEnum",
"NameTable"
]);
}
run() {
//const table = new IndexedArray();
//for (var i = 0; i < insts.length; i++) {
// const inst = insts[i];
// const item = "{ " + "0" + "}";
// inst.commonIndex = table.addIndexed(item);
//}
// return this.ctx.inject("InstInfo", StringUtils.disclaimer(s), 0);
return 0;
}
}
// ============================================================================
// [Main]
// ============================================================================
new ArmTableGen()
.addTask(new IdEnum())
.addTask(new NameTable())
.addTask(new EncodingTable())
.addTask(new CommonTable())
.run();